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[thirdparty/openssl.git] / crypto / evp / e_aes.c
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aa6bb135 1/*
3c7d0945 2 * Copyright 2001-2018 The OpenSSL Project Authors. All Rights Reserved.
deb2c1a1 3 *
4a8b0c55 4 * Licensed under the Apache License 2.0 (the "License"). You may not use
aa6bb135
RS		 5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
deb2c1a1
DSH		 8 */
9
8c84b677 10#include <openssl/opensslconf.h>
5158c763
MC		 11#include <openssl/crypto.h>
12#include <openssl/evp.h>
13#include <openssl/err.h>
14#include <string.h>
15#include <assert.h>
16#include <openssl/aes.h>
17#include "internal/evp_int.h"
18#include "modes_lcl.h"
19#include <openssl/rand.h>
b1ceb439 20#include <openssl/cmac.h>
7141ba31 21#include "evp_locl.h"
0f113f3e
MC		 22
23typedef struct {
24 union {
25 double align;
26 AES_KEY ks;
27 } ks;
28 block128_f block;
29 union {
30 cbc128_f cbc;
31 ctr128_f ctr;
32 } stream;
33} EVP_AES_KEY;
34
35typedef struct {
36 union {
37 double align;
38 AES_KEY ks;
39 } ks; /* AES key schedule to use */
40 int key_set; /* Set if key initialised */
41 int iv_set; /* Set if an iv is set */
42 GCM128_CONTEXT gcm;
43 unsigned char *iv; /* Temporary IV store */
44 int ivlen; /* IV length */
45 int taglen;
46 int iv_gen; /* It is OK to generate IVs */
47 int tls_aad_len; /* TLS AAD length */
d6b34570 48 uint64_t tls_enc_records; /* Number of TLS records encrypted */
0f113f3e
MC		 49 ctr128_f ctr;
50} EVP_AES_GCM_CTX;
51
52typedef struct {
53 union {
54 double align;
55 AES_KEY ks;
56 } ks1, ks2; /* AES key schedules to use */
57 XTS128_CONTEXT xts;
58 void (*stream) (const unsigned char *in,
59 unsigned char *out, size_t length,
60 const AES_KEY *key1, const AES_KEY *key2,
61 const unsigned char iv[16]);
62} EVP_AES_XTS_CTX;
63
64typedef struct {
65 union {
66 double align;
67 AES_KEY ks;
68 } ks; /* AES key schedule to use */
69 int key_set; /* Set if key initialised */
70 int iv_set; /* Set if an iv is set */
71 int tag_set; /* Set if tag is valid */
72 int len_set; /* Set if message length set */
73 int L, M; /* L and M parameters from RFC3610 */
e75c5a79 74 int tls_aad_len; /* TLS AAD length */
0f113f3e
MC		 75 CCM128_CONTEXT ccm;
76 ccm128_f str;
77} EVP_AES_CCM_CTX;
78
5158c763 79#ifndef OPENSSL_NO_OCB
0f113f3e 80typedef struct {
bdc985b1
AP		 81 union {
82 double align;
83 AES_KEY ks;
84 } ksenc; /* AES key schedule to use for encryption */
85 union {
86 double align;
87 AES_KEY ks;
88 } ksdec; /* AES key schedule to use for decryption */
0f113f3e
MC		 89 int key_set; /* Set if key initialised */
90 int iv_set; /* Set if an iv is set */
91 OCB128_CONTEXT ocb;
92 unsigned char *iv; /* Temporary IV store */
93 unsigned char tag[16];
94 unsigned char data_buf[16]; /* Store partial data blocks */
95 unsigned char aad_buf[16]; /* Store partial AAD blocks */
96 int data_buf_len;
97 int aad_buf_len;
98 int ivlen; /* IV length */
99 int taglen;
100} EVP_AES_OCB_CTX;
5158c763 101#endif
e6b336ef 102
5158c763 103#define MAXBITCHUNK ((size_t)1<<(sizeof(size_t)*8-4))
17f121de 104
5158c763 105#ifdef VPAES_ASM
8ca28da0 106int vpaes_set_encrypt_key(const unsigned char *userKey, int bits,
0f113f3e 107 AES_KEY *key);
8ca28da0 108int vpaes_set_decrypt_key(const unsigned char *userKey, int bits,
0f113f3e 109 AES_KEY *key);
8ca28da0
AP		 110
111void vpaes_encrypt(const unsigned char *in, unsigned char *out,
0f113f3e 112 const AES_KEY *key);
8ca28da0 113void vpaes_decrypt(const unsigned char *in, unsigned char *out,
0f113f3e 114 const AES_KEY *key);
8ca28da0
AP		 115
116void vpaes_cbc_encrypt(const unsigned char *in,
0f113f3e
MC		 117 unsigned char *out,
118 size_t length,
119 const AES_KEY *key, unsigned char *ivec, int enc);
5158c763
MC		 120#endif
121#ifdef BSAES_ASM
a75a52a4 122void bsaes_cbc_encrypt(const unsigned char *in, unsigned char *out,
0f113f3e
MC		 123 size_t length, const AES_KEY *key,
124 unsigned char ivec[16], int enc);
993adc05 125void bsaes_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out,
0f113f3e
MC		 126 size_t len, const AES_KEY *key,
127 const unsigned char ivec[16]);
60d4e99c 128void bsaes_xts_encrypt(const unsigned char *inp, unsigned char *out,
0f113f3e
MC		 129 size_t len, const AES_KEY *key1,
130 const AES_KEY *key2, const unsigned char iv[16]);
60d4e99c 131void bsaes_xts_decrypt(const unsigned char *inp, unsigned char *out,
0f113f3e
MC		 132 size_t len, const AES_KEY *key1,
133 const AES_KEY *key2, const unsigned char iv[16]);
5158c763
MC		 134#endif
135#ifdef AES_CTR_ASM
07904e0c 136void AES_ctr32_encrypt(const unsigned char *in, unsigned char *out,
0f113f3e
MC		 137 size_t blocks, const AES_KEY *key,
138 const unsigned char ivec[AES_BLOCK_SIZE]);
5158c763
MC		 139#endif
140#ifdef AES_XTS_ASM
96cce820 141void AES_xts_encrypt(const unsigned char *inp, unsigned char *out, size_t len,
0f113f3e
MC		 142 const AES_KEY *key1, const AES_KEY *key2,
143 const unsigned char iv[16]);
96cce820 144void AES_xts_decrypt(const unsigned char *inp, unsigned char *out, size_t len,
0f113f3e
MC		 145 const AES_KEY *key1, const AES_KEY *key2,
146 const unsigned char iv[16]);
5158c763 147#endif
8ca28da0 148
03a5e5ae
PS		 149/* increment counter (64-bit int) by 1 */
150static void ctr64_inc(unsigned char *counter)
151{
152 int n = 8;
153 unsigned char c;
154
155 do {
156 --n;
157 c = counter[n];
158 ++c;
159 counter[n] = c;
160 if (c)
161 return;
162 } while (n);
163}
164
6944565b 165#if defined(OPENSSL_CPUID_OBJ) && (defined(__powerpc__) || defined(__ppc__) || defined(_ARCH_PPC))
5158c763
MC		 166# include "ppc_arch.h"
167# ifdef VPAES_ASM
168# define VPAES_CAPABLE (OPENSSL_ppccap_P & PPC_ALTIVEC)
de51e830 169# endif
5158c763
MC		 170# define HWAES_CAPABLE (OPENSSL_ppccap_P & PPC_CRYPTO207)
171# define HWAES_set_encrypt_key aes_p8_set_encrypt_key
172# define HWAES_set_decrypt_key aes_p8_set_decrypt_key
173# define HWAES_encrypt aes_p8_encrypt
174# define HWAES_decrypt aes_p8_decrypt
175# define HWAES_cbc_encrypt aes_p8_cbc_encrypt
176# define HWAES_ctr32_encrypt_blocks aes_p8_ctr32_encrypt_blocks
46f047d7
AP		 177# define HWAES_xts_encrypt aes_p8_xts_encrypt
178# define HWAES_xts_decrypt aes_p8_xts_decrypt
5158c763 179#endif
07f3e4f3 180
5158c763 181#if defined(AES_ASM) && !defined(I386_ONLY) && ( \
0f113f3e
MC		 182 ((defined(__i386) || defined(__i386__) || \
183 defined(_M_IX86)) && defined(OPENSSL_IA32_SSE2))|| \
184 defined(__x86_64) || defined(__x86_64__) || \
b1a07c38 185 defined(_M_AMD64) || defined(_M_X64) )
8ca28da0 186
c5f6da54 187extern unsigned int OPENSSL_ia32cap_P[];
8ca28da0 188
5158c763
MC		 189# ifdef VPAES_ASM
190# define VPAES_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(41-32)))
191# endif
192# ifdef BSAES_ASM
193# define BSAES_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(41-32)))
194# endif
17f121de
AP		 195/*
196 * AES-NI section
197 */
5158c763 198# define AESNI_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(57-32)))
d1fff483
AP		 199
200int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
0f113f3e 201 AES_KEY *key);
d1fff483 202int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
0f113f3e 203 AES_KEY *key);
d1fff483
AP		 204
205void aesni_encrypt(const unsigned char *in, unsigned char *out,
0f113f3e 206 const AES_KEY *key);
d1fff483 207void aesni_decrypt(const unsigned char *in, unsigned char *out,
0f113f3e 208 const AES_KEY *key);
d1fff483
AP		 209
210void aesni_ecb_encrypt(const unsigned char *in,
0f113f3e
MC		 211 unsigned char *out,
212 size_t length, const AES_KEY *key, int enc);
d1fff483 213void aesni_cbc_encrypt(const unsigned char *in,
0f113f3e
MC		 214 unsigned char *out,
215 size_t length,
216 const AES_KEY *key, unsigned char *ivec, int enc);
d1fff483
AP		 217
218void aesni_ctr32_encrypt_blocks(const unsigned char *in,
0f113f3e
MC		 219 unsigned char *out,
220 size_t blocks,
221 const void *key, const unsigned char *ivec);
17f121de
AP		 222
223void aesni_xts_encrypt(const unsigned char *in,
0f113f3e
MC		 224 unsigned char *out,
225 size_t length,
226 const AES_KEY *key1, const AES_KEY *key2,
227 const unsigned char iv[16]);
17f121de
AP		 228
229void aesni_xts_decrypt(const unsigned char *in,
0f113f3e
MC		 230 unsigned char *out,
231 size_t length,
232 const AES_KEY *key1, const AES_KEY *key2,
233 const unsigned char iv[16]);
234
235void aesni_ccm64_encrypt_blocks(const unsigned char *in,
236 unsigned char *out,
237 size_t blocks,
238 const void *key,
239 const unsigned char ivec[16],
240 unsigned char cmac[16]);
241
242void aesni_ccm64_decrypt_blocks(const unsigned char *in,
243 unsigned char *out,
244 size_t blocks,
245 const void *key,
246 const unsigned char ivec[16],
247 unsigned char cmac[16]);
248
5158c763 249# if defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64)
4e049c52 250size_t aesni_gcm_encrypt(const unsigned char *in,
0f113f3e
MC		 251 unsigned char *out,
252 size_t len,
253 const void *key, unsigned char ivec[16], u64 *Xi);
5158c763 254# define AES_gcm_encrypt aesni_gcm_encrypt
4e049c52 255size_t aesni_gcm_decrypt(const unsigned char *in,
0f113f3e
MC		 256 unsigned char *out,
257 size_t len,
258 const void *key, unsigned char ivec[16], u64 *Xi);
5158c763 259# define AES_gcm_decrypt aesni_gcm_decrypt
0f113f3e
MC		 260void gcm_ghash_avx(u64 Xi[2], const u128 Htable[16], const u8 *in,
261 size_t len);
5158c763 262# define AES_GCM_ASM(gctx) (gctx->ctr==aesni_ctr32_encrypt_blocks && \
0f113f3e 263 gctx->gcm.ghash==gcm_ghash_avx)
5158c763 264# define AES_GCM_ASM2(gctx) (gctx->gcm.block==(block128_f)aesni_encrypt && \
0f113f3e 265 gctx->gcm.ghash==gcm_ghash_avx)
5158c763
MC		 266# undef AES_GCM_ASM2 /* minor size optimization */
267# endif
4e049c52 268
17f121de 269static int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
0f113f3e
MC		 270 const unsigned char *iv, int enc)
271{
272 int ret, mode;
6435f0f6 273 EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
0f113f3e 274
6435f0f6 275 mode = EVP_CIPHER_CTX_mode(ctx);
0f113f3e
MC		 276 if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
277 && !enc) {
6435f0f6
RL		 278 ret = aesni_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
279 &dat->ks.ks);
0f113f3e
MC		 280 dat->block = (block128_f) aesni_decrypt;
281 dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
282 (cbc128_f) aesni_cbc_encrypt : NULL;
283 } else {
6435f0f6
RL		 284 ret = aesni_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
285 &dat->ks.ks);
0f113f3e
MC		 286 dat->block = (block128_f) aesni_encrypt;
287 if (mode == EVP_CIPH_CBC_MODE)
288 dat->stream.cbc = (cbc128_f) aesni_cbc_encrypt;
289 else if (mode == EVP_CIPH_CTR_MODE)
290 dat->stream.ctr = (ctr128_f) aesni_ctr32_encrypt_blocks;
291 else
292 dat->stream.cbc = NULL;
293 }
294
295 if (ret < 0) {
296 EVPerr(EVP_F_AESNI_INIT_KEY, EVP_R_AES_KEY_SETUP_FAILED);
297 return 0;
298 }
299
300 return 1;
301}
302
303static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
304 const unsigned char *in, size_t len)
d1fff483 305{
6435f0f6
RL		 306 aesni_cbc_encrypt(in, out, len, &EVP_C_DATA(EVP_AES_KEY,ctx)->ks.ks,
307 EVP_CIPHER_CTX_iv_noconst(ctx),
308 EVP_CIPHER_CTX_encrypting(ctx));
d1fff483 309
0f113f3e 310 return 1;
d1fff483
AP		 311}
312
0f113f3e
MC		 313static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
314 const unsigned char *in, size_t len)
d1fff483 315{
6435f0f6 316 size_t bl = EVP_CIPHER_CTX_block_size(ctx);
d1fff483 317
0f113f3e
MC		 318 if (len < bl)
319 return 1;
d1fff483 320
6435f0f6
RL		 321 aesni_ecb_encrypt(in, out, len, &EVP_C_DATA(EVP_AES_KEY,ctx)->ks.ks,
322 EVP_CIPHER_CTX_encrypting(ctx));
d1fff483 323
0f113f3e 324 return 1;
d1fff483
AP		 325}
326
5158c763 327# define aesni_ofb_cipher aes_ofb_cipher
0f113f3e
MC		 328static int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
329 const unsigned char *in, size_t len);
d1fff483 330
5158c763 331# define aesni_cfb_cipher aes_cfb_cipher
0f113f3e
MC		 332static int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
333 const unsigned char *in, size_t len);
d1fff483 334
5158c763 335# define aesni_cfb8_cipher aes_cfb8_cipher
0f113f3e
MC		 336static int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
337 const unsigned char *in, size_t len);
d1fff483 338
5158c763 339# define aesni_cfb1_cipher aes_cfb1_cipher
0f113f3e
MC		 340static int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
341 const unsigned char *in, size_t len);
d1fff483 342
5158c763 343# define aesni_ctr_cipher aes_ctr_cipher
17f121de 344static int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
0f113f3e 345 const unsigned char *in, size_t len);
d1fff483 346
17f121de 347static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
0f113f3e
MC		 348 const unsigned char *iv, int enc)
349{
6435f0f6 350 EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx);
0f113f3e
MC		 351 if (!iv && !key)
352 return 1;
353 if (key) {
6435f0f6
RL		 354 aesni_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
355 &gctx->ks.ks);
0f113f3e
MC		 356 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f) aesni_encrypt);
357 gctx->ctr = (ctr128_f) aesni_ctr32_encrypt_blocks;
358 /*
359 * If we have an iv can set it directly, otherwise use saved IV.
360 */
361 if (iv == NULL && gctx->iv_set)
362 iv = gctx->iv;
363 if (iv) {
364 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
365 gctx->iv_set = 1;
366 }
367 gctx->key_set = 1;
368 } else {
369 /* If key set use IV, otherwise copy */
370 if (gctx->key_set)
371 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
372 else
373 memcpy(gctx->iv, iv, gctx->ivlen);
374 gctx->iv_set = 1;
375 gctx->iv_gen = 0;
376 }
377 return 1;
378}
379
5158c763 380# define aesni_gcm_cipher aes_gcm_cipher
17f121de 381static int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
0f113f3e 382 const unsigned char *in, size_t len);
17f121de
AP		 383
384static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
0f113f3e
MC		 385 const unsigned char *iv, int enc)
386{
6435f0f6 387 EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,ctx);
0f113f3e
MC		 388 if (!iv && !key)
389 return 1;
390
391 if (key) {
392 /* key_len is two AES keys */
393 if (enc) {
6435f0f6
RL		 394 aesni_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 4,
395 &xctx->ks1.ks);
0f113f3e
MC		 396 xctx->xts.block1 = (block128_f) aesni_encrypt;
397 xctx->stream = aesni_xts_encrypt;
398 } else {
6435f0f6
RL		 399 aesni_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 4,
400 &xctx->ks1.ks);
0f113f3e
MC		 401 xctx->xts.block1 = (block128_f) aesni_decrypt;
402 xctx->stream = aesni_xts_decrypt;
403 }
404
6435f0f6
RL		 405 aesni_set_encrypt_key(key + EVP_CIPHER_CTX_key_length(ctx) / 2,
406 EVP_CIPHER_CTX_key_length(ctx) * 4,
407 &xctx->ks2.ks);
0f113f3e
MC		 408 xctx->xts.block2 = (block128_f) aesni_encrypt;
409
410 xctx->xts.key1 = &xctx->ks1;
411 }
412
413 if (iv) {
414 xctx->xts.key2 = &xctx->ks2;
6435f0f6 415 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 16);
0f113f3e
MC		 416 }
417
418 return 1;
419}
420
5158c763 421# define aesni_xts_cipher aes_xts_cipher
17f121de 422static int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
0f113f3e 423 const unsigned char *in, size_t len);
17f121de
AP		 424
425static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
0f113f3e
MC		 426 const unsigned char *iv, int enc)
427{
6435f0f6 428 EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx);
0f113f3e
MC		 429 if (!iv && !key)
430 return 1;
431 if (key) {
6435f0f6
RL		 432 aesni_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
433 &cctx->ks.ks);
0f113f3e
MC		 434 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
435 &cctx->ks, (block128_f) aesni_encrypt);
436 cctx->str = enc ? (ccm128_f) aesni_ccm64_encrypt_blocks :
437 (ccm128_f) aesni_ccm64_decrypt_blocks;
438 cctx->key_set = 1;
439 }
440 if (iv) {
6435f0f6 441 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 15 - cctx->L);
0f113f3e
MC		 442 cctx->iv_set = 1;
443 }
444 return 1;
445}
446
5158c763 447# define aesni_ccm_cipher aes_ccm_cipher
17f121de 448static int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
0f113f3e 449 const unsigned char *in, size_t len);
17f121de 450
5158c763 451# ifndef OPENSSL_NO_OCB
bd30091c
AP		 452void aesni_ocb_encrypt(const unsigned char *in, unsigned char *out,
453 size_t blocks, const void *key,
454 size_t start_block_num,
455 unsigned char offset_i[16],
456 const unsigned char L_[][16],
457 unsigned char checksum[16]);
458void aesni_ocb_decrypt(const unsigned char *in, unsigned char *out,
459 size_t blocks, const void *key,
460 size_t start_block_num,
461 unsigned char offset_i[16],
462 const unsigned char L_[][16],
463 unsigned char checksum[16]);
464
e6b336ef 465static int aesni_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
0f113f3e
MC		 466 const unsigned char *iv, int enc)
467{
6435f0f6 468 EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,ctx);
0f113f3e
MC		 469 if (!iv && !key)
470 return 1;
471 if (key) {
472 do {
473 /*
474 * We set both the encrypt and decrypt key here because decrypt
475 * needs both. We could possibly optimise to remove setting the
476 * decrypt for an encryption operation.
477 */
6435f0f6
RL		 478 aesni_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
479 &octx->ksenc.ks);
480 aesni_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
481 &octx->ksdec.ks);
bdc985b1
AP		 482 if (!CRYPTO_ocb128_init(&octx->ocb,
483 &octx->ksenc.ks, &octx->ksdec.ks,
0f113f3e 484 (block128_f) aesni_encrypt,
bd30091c
AP		 485 (block128_f) aesni_decrypt,
486 enc ? aesni_ocb_encrypt
487 : aesni_ocb_decrypt))
0f113f3e
MC		 488 return 0;
489 }
490 while (0);
491
492 /*
493 * If we have an iv we can set it directly, otherwise use saved IV.
494 */
495 if (iv == NULL && octx->iv_set)
496 iv = octx->iv;
497 if (iv) {
498 if (CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen)
499 != 1)
500 return 0;
501 octx->iv_set = 1;
502 }
503 octx->key_set = 1;
504 } else {
505 /* If key set use IV, otherwise copy */
506 if (octx->key_set)
507 CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen);
508 else
509 memcpy(octx->iv, iv, octx->ivlen);
510 octx->iv_set = 1;
511 }
512 return 1;
513}
514
5158c763 515# define aesni_ocb_cipher aes_ocb_cipher
e6b336ef 516static int aesni_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
0f113f3e 517 const unsigned char *in, size_t len);
5158c763 518# endif /* OPENSSL_NO_OCB */
e6b336ef 519
5158c763 520# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
17f121de 521static const EVP_CIPHER aesni_##keylen##_##mode = { \
0f113f3e
MC		 522 nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
523 flags|EVP_CIPH_##MODE##_MODE, \
524 aesni_init_key, \
525 aesni_##mode##_cipher, \
526 NULL, \
527 sizeof(EVP_AES_KEY), \
528 NULL,NULL,NULL,NULL }; \
17f121de 529static const EVP_CIPHER aes_##keylen##_##mode = { \
0f113f3e
MC		 530 nid##_##keylen##_##nmode,blocksize, \
531 keylen/8,ivlen, \
532 flags|EVP_CIPH_##MODE##_MODE, \
533 aes_init_key, \
534 aes_##mode##_cipher, \
535 NULL, \
536 sizeof(EVP_AES_KEY), \
537 NULL,NULL,NULL,NULL }; \
17f121de 538const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
8ca28da0 539{ return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
17f121de 540
5158c763 541# define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
17f121de 542static const EVP_CIPHER aesni_##keylen##_##mode = { \
0f113f3e 543 nid##_##keylen##_##mode,blocksize, \
b1ceb439
TS		 544 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE||EVP_CIPH_##MODE##_MODE==EVP_CIPH_SIV_MODE?2:1)*keylen/8, \
545 ivlen, \
0f113f3e
MC		 546 flags|EVP_CIPH_##MODE##_MODE, \
547 aesni_##mode##_init_key, \
548 aesni_##mode##_cipher, \
549 aes_##mode##_cleanup, \
550 sizeof(EVP_AES_##MODE##_CTX), \
551 NULL,NULL,aes_##mode##_ctrl,NULL }; \
17f121de 552static const EVP_CIPHER aes_##keylen##_##mode = { \
0f113f3e 553 nid##_##keylen##_##mode,blocksize, \
b1ceb439
TS		 554 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE||EVP_CIPH_##MODE##_MODE==EVP_CIPH_SIV_MODE?2:1)*keylen/8, \
555 ivlen, \
0f113f3e
MC		 556 flags|EVP_CIPH_##MODE##_MODE, \
557 aes_##mode##_init_key, \
558 aes_##mode##_cipher, \
559 aes_##mode##_cleanup, \
560 sizeof(EVP_AES_##MODE##_CTX), \
561 NULL,NULL,aes_##mode##_ctrl,NULL }; \
17f121de 562const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
8ca28da0 563{ return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
d1fff483 564
5158c763 565#elif defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
c5f6da54 566
5158c763 567# include "sparc_arch.h"
c5f6da54
AP		 568
569extern unsigned int OPENSSL_sparcv9cap_P[];
570
6944565b
AP		 571/*
572 * Initial Fujitsu SPARC64 X support
573 */
574# define HWAES_CAPABLE (OPENSSL_sparcv9cap_P[0] & SPARCV9_FJAESX)
575# define HWAES_set_encrypt_key aes_fx_set_encrypt_key
576# define HWAES_set_decrypt_key aes_fx_set_decrypt_key
577# define HWAES_encrypt aes_fx_encrypt
578# define HWAES_decrypt aes_fx_decrypt
365f95ad
AP		 579# define HWAES_cbc_encrypt aes_fx_cbc_encrypt
580# define HWAES_ctr32_encrypt_blocks aes_fx_ctr32_encrypt_blocks
6944565b 581
5158c763 582# define SPARC_AES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_AES)
c5f6da54 583
0f113f3e
MC		 584void aes_t4_set_encrypt_key(const unsigned char *key, int bits, AES_KEY *ks);
585void aes_t4_set_decrypt_key(const unsigned char *key, int bits, AES_KEY *ks);
586void aes_t4_encrypt(const unsigned char *in, unsigned char *out,
587 const AES_KEY *key);
588void aes_t4_decrypt(const unsigned char *in, unsigned char *out,
589 const AES_KEY *key);
c5f6da54
AP		 590/*
591 * Key-length specific subroutines were chosen for following reason.
592 * Each SPARC T4 core can execute up to 8 threads which share core's
593 * resources. Loading as much key material to registers allows to
594 * minimize references to shared memory interface, as well as amount
595 * of instructions in inner loops [much needed on T4]. But then having
596 * non-key-length specific routines would require conditional branches
597 * either in inner loops or on subroutines' entries. Former is hardly
598 * acceptable, while latter means code size increase to size occupied
0d4fb843 599 * by multiple key-length specific subroutines, so why fight?
c5f6da54 600 */
0f113f3e
MC		 601void aes128_t4_cbc_encrypt(const unsigned char *in, unsigned char *out,
602 size_t len, const AES_KEY *key,
603 unsigned char *ivec);
604void aes128_t4_cbc_decrypt(const unsigned char *in, unsigned char *out,
605 size_t len, const AES_KEY *key,
606 unsigned char *ivec);
607void aes192_t4_cbc_encrypt(const unsigned char *in, unsigned char *out,
608 size_t len, const AES_KEY *key,
609 unsigned char *ivec);
610void aes192_t4_cbc_decrypt(const unsigned char *in, unsigned char *out,
611 size_t len, const AES_KEY *key,
612 unsigned char *ivec);
613void aes256_t4_cbc_encrypt(const unsigned char *in, unsigned char *out,
614 size_t len, const AES_KEY *key,
615 unsigned char *ivec);
616void aes256_t4_cbc_decrypt(const unsigned char *in, unsigned char *out,
617 size_t len, const AES_KEY *key,
618 unsigned char *ivec);
619void aes128_t4_ctr32_encrypt(const unsigned char *in, unsigned char *out,
620 size_t blocks, const AES_KEY *key,
621 unsigned char *ivec);
622void aes192_t4_ctr32_encrypt(const unsigned char *in, unsigned char *out,
623 size_t blocks, const AES_KEY *key,
624 unsigned char *ivec);
625void aes256_t4_ctr32_encrypt(const unsigned char *in, unsigned char *out,
626 size_t blocks, const AES_KEY *key,
627 unsigned char *ivec);
628void aes128_t4_xts_encrypt(const unsigned char *in, unsigned char *out,
629 size_t blocks, const AES_KEY *key1,
630 const AES_KEY *key2, const unsigned char *ivec);
631void aes128_t4_xts_decrypt(const unsigned char *in, unsigned char *out,
632 size_t blocks, const AES_KEY *key1,
633 const AES_KEY *key2, const unsigned char *ivec);
634void aes256_t4_xts_encrypt(const unsigned char *in, unsigned char *out,
635 size_t blocks, const AES_KEY *key1,
636 const AES_KEY *key2, const unsigned char *ivec);
637void aes256_t4_xts_decrypt(const unsigned char *in, unsigned char *out,
638 size_t blocks, const AES_KEY *key1,
639 const AES_KEY *key2, const unsigned char *ivec);
c5f6da54
AP		 640
641static int aes_t4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
0f113f3e
MC		 642 const unsigned char *iv, int enc)
643{
644 int ret, mode, bits;
6435f0f6 645 EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
0f113f3e 646
6435f0f6
RL		 647 mode = EVP_CIPHER_CTX_mode(ctx);
648 bits = EVP_CIPHER_CTX_key_length(ctx) * 8;
0f113f3e
MC		 649 if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
650 && !enc) {
651 ret = 0;
6435f0f6 652 aes_t4_set_decrypt_key(key, bits, &dat->ks.ks);
0f113f3e
MC		 653 dat->block = (block128_f) aes_t4_decrypt;
654 switch (bits) {
655 case 128:
656 dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
657 (cbc128_f) aes128_t4_cbc_decrypt : NULL;
658 break;
659 case 192:
660 dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
661 (cbc128_f) aes192_t4_cbc_decrypt : NULL;
662 break;
663 case 256:
664 dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
665 (cbc128_f) aes256_t4_cbc_decrypt : NULL;
666 break;
667 default:
668 ret = -1;
669 }
670 } else {
671 ret = 0;
6435f0f6 672 aes_t4_set_encrypt_key(key, bits, &dat->ks.ks);
0f113f3e
MC		 673 dat->block = (block128_f) aes_t4_encrypt;
674 switch (bits) {
675 case 128:
676 if (mode == EVP_CIPH_CBC_MODE)
677 dat->stream.cbc = (cbc128_f) aes128_t4_cbc_encrypt;
678 else if (mode == EVP_CIPH_CTR_MODE)
679 dat->stream.ctr = (ctr128_f) aes128_t4_ctr32_encrypt;
680 else
681 dat->stream.cbc = NULL;
682 break;
683 case 192:
684 if (mode == EVP_CIPH_CBC_MODE)
685 dat->stream.cbc = (cbc128_f) aes192_t4_cbc_encrypt;
686 else if (mode == EVP_CIPH_CTR_MODE)
687 dat->stream.ctr = (ctr128_f) aes192_t4_ctr32_encrypt;
688 else
689 dat->stream.cbc = NULL;
690 break;
691 case 256:
692 if (mode == EVP_CIPH_CBC_MODE)
693 dat->stream.cbc = (cbc128_f) aes256_t4_cbc_encrypt;
694 else if (mode == EVP_CIPH_CTR_MODE)
695 dat->stream.ctr = (ctr128_f) aes256_t4_ctr32_encrypt;
696 else
697 dat->stream.cbc = NULL;
698 break;
699 default:
700 ret = -1;
701 }
702 }
703
704 if (ret < 0) {
705 EVPerr(EVP_F_AES_T4_INIT_KEY, EVP_R_AES_KEY_SETUP_FAILED);
706 return 0;
707 }
708
709 return 1;
710}
711
5158c763 712# define aes_t4_cbc_cipher aes_cbc_cipher
0f113f3e
MC		 713static int aes_t4_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
714 const unsigned char *in, size_t len);
715
5158c763 716# define aes_t4_ecb_cipher aes_ecb_cipher
0f113f3e
MC		 717static int aes_t4_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
718 const unsigned char *in, size_t len);
719
5158c763 720# define aes_t4_ofb_cipher aes_ofb_cipher
0f113f3e
MC		 721static int aes_t4_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
722 const unsigned char *in, size_t len);
723
5158c763 724# define aes_t4_cfb_cipher aes_cfb_cipher
0f113f3e
MC		 725static int aes_t4_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
726 const unsigned char *in, size_t len);
727
5158c763 728# define aes_t4_cfb8_cipher aes_cfb8_cipher
0f113f3e
MC		 729static int aes_t4_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
730 const unsigned char *in, size_t len);
731
5158c763 732# define aes_t4_cfb1_cipher aes_cfb1_cipher
0f113f3e
MC		 733static int aes_t4_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
734 const unsigned char *in, size_t len);
735
5158c763 736# define aes_t4_ctr_cipher aes_ctr_cipher
c5f6da54 737static int aes_t4_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
0f113f3e 738 const unsigned char *in, size_t len);
c5f6da54
AP		 739
740static int aes_t4_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
0f113f3e
MC		 741 const unsigned char *iv, int enc)
742{
6435f0f6 743 EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx);
0f113f3e
MC		 744 if (!iv && !key)
745 return 1;
746 if (key) {
6435f0f6 747 int bits = EVP_CIPHER_CTX_key_length(ctx) * 8;
0f113f3e
MC		 748 aes_t4_set_encrypt_key(key, bits, &gctx->ks.ks);
749 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
750 (block128_f) aes_t4_encrypt);
751 switch (bits) {
752 case 128:
753 gctx->ctr = (ctr128_f) aes128_t4_ctr32_encrypt;
754 break;
755 case 192:
756 gctx->ctr = (ctr128_f) aes192_t4_ctr32_encrypt;
757 break;
758 case 256:
759 gctx->ctr = (ctr128_f) aes256_t4_ctr32_encrypt;
760 break;
761 default:
762 return 0;
763 }
764 /*
765 * If we have an iv can set it directly, otherwise use saved IV.
766 */
767 if (iv == NULL && gctx->iv_set)
768 iv = gctx->iv;
769 if (iv) {
770 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
771 gctx->iv_set = 1;
772 }
773 gctx->key_set = 1;
774 } else {
775 /* If key set use IV, otherwise copy */
776 if (gctx->key_set)
777 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
778 else
779 memcpy(gctx->iv, iv, gctx->ivlen);
780 gctx->iv_set = 1;
781 gctx->iv_gen = 0;
782 }
783 return 1;
784}
785
5158c763 786# define aes_t4_gcm_cipher aes_gcm_cipher
c5f6da54 787static int aes_t4_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
0f113f3e 788 const unsigned char *in, size_t len);
c5f6da54
AP		 789
790static int aes_t4_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
0f113f3e
MC		 791 const unsigned char *iv, int enc)
792{
6435f0f6 793 EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,ctx);
0f113f3e
MC		 794 if (!iv && !key)
795 return 1;
796
797 if (key) {
6435f0f6 798 int bits = EVP_CIPHER_CTX_key_length(ctx) * 4;
0f113f3e
MC		 799 xctx->stream = NULL;
800 /* key_len is two AES keys */
801 if (enc) {
802 aes_t4_set_encrypt_key(key, bits, &xctx->ks1.ks);
803 xctx->xts.block1 = (block128_f) aes_t4_encrypt;
804 switch (bits) {
805 case 128:
806 xctx->stream = aes128_t4_xts_encrypt;
807 break;
0f113f3e
MC		 808 case 256:
809 xctx->stream = aes256_t4_xts_encrypt;
810 break;
811 default:
812 return 0;
813 }
814 } else {
6435f0f6
RL		 815 aes_t4_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 4,
816 &xctx->ks1.ks);
0f113f3e
MC		 817 xctx->xts.block1 = (block128_f) aes_t4_decrypt;
818 switch (bits) {
819 case 128:
820 xctx->stream = aes128_t4_xts_decrypt;
821 break;
0f113f3e
MC		 822 case 256:
823 xctx->stream = aes256_t4_xts_decrypt;
824 break;
825 default:
826 return 0;
827 }
828 }
829
6435f0f6
RL		 830 aes_t4_set_encrypt_key(key + EVP_CIPHER_CTX_key_length(ctx) / 2,
831 EVP_CIPHER_CTX_key_length(ctx) * 4,
832 &xctx->ks2.ks);
0f113f3e
MC		 833 xctx->xts.block2 = (block128_f) aes_t4_encrypt;
834
835 xctx->xts.key1 = &xctx->ks1;
836 }
837
838 if (iv) {
839 xctx->xts.key2 = &xctx->ks2;
6435f0f6 840 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 16);
0f113f3e
MC		 841 }
842
843 return 1;
844}
845
5158c763 846# define aes_t4_xts_cipher aes_xts_cipher
c5f6da54 847static int aes_t4_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
0f113f3e 848 const unsigned char *in, size_t len);
c5f6da54
AP		 849
850static int aes_t4_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
0f113f3e
MC		 851 const unsigned char *iv, int enc)
852{
6435f0f6 853 EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx);
0f113f3e
MC		 854 if (!iv && !key)
855 return 1;
856 if (key) {
6435f0f6 857 int bits = EVP_CIPHER_CTX_key_length(ctx) * 8;
0f113f3e
MC		 858 aes_t4_set_encrypt_key(key, bits, &cctx->ks.ks);
859 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
860 &cctx->ks, (block128_f) aes_t4_encrypt);
bdc985b1 861 cctx->str = NULL;
0f113f3e
MC		 862 cctx->key_set = 1;
863 }
864 if (iv) {
6435f0f6 865 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 15 - cctx->L);
0f113f3e
MC		 866 cctx->iv_set = 1;
867 }
868 return 1;
869}
870
5158c763 871# define aes_t4_ccm_cipher aes_ccm_cipher
c5f6da54 872static int aes_t4_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
0f113f3e 873 const unsigned char *in, size_t len);
c5f6da54 874
5158c763 875# ifndef OPENSSL_NO_OCB
e6b336ef 876static int aes_t4_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
0f113f3e
MC		 877 const unsigned char *iv, int enc)
878{
6435f0f6 879 EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,ctx);
0f113f3e
MC		 880 if (!iv && !key)
881 return 1;
882 if (key) {
883 do {
884 /*
885 * We set both the encrypt and decrypt key here because decrypt
886 * needs both. We could possibly optimise to remove setting the
887 * decrypt for an encryption operation.
888 */
6435f0f6
RL		 889 aes_t4_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
890 &octx->ksenc.ks);
891 aes_t4_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
892 &octx->ksdec.ks);
bdc985b1
AP		 893 if (!CRYPTO_ocb128_init(&octx->ocb,
894 &octx->ksenc.ks, &octx->ksdec.ks,
0f113f3e 895 (block128_f) aes_t4_encrypt,
02dc0b82
AP		 896 (block128_f) aes_t4_decrypt,
897 NULL))
0f113f3e
MC		 898 return 0;
899 }
900 while (0);
901
902 /*
903 * If we have an iv we can set it directly, otherwise use saved IV.
904 */
905 if (iv == NULL && octx->iv_set)
906 iv = octx->iv;
907 if (iv) {
908 if (CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen)
909 != 1)
910 return 0;
911 octx->iv_set = 1;
912 }
913 octx->key_set = 1;
914 } else {
915 /* If key set use IV, otherwise copy */
916 if (octx->key_set)
917 CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen);
918 else
919 memcpy(octx->iv, iv, octx->ivlen);
920 octx->iv_set = 1;
921 }
922 return 1;
923}
924
5158c763 925# define aes_t4_ocb_cipher aes_ocb_cipher
e6b336ef 926static int aes_t4_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
0f113f3e 927 const unsigned char *in, size_t len);
5158c763 928# endif /* OPENSSL_NO_OCB */
e6b336ef 929
5158c763 930# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
c5f6da54 931static const EVP_CIPHER aes_t4_##keylen##_##mode = { \
0f113f3e
MC		 932 nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
933 flags|EVP_CIPH_##MODE##_MODE, \
934 aes_t4_init_key, \
935 aes_t4_##mode##_cipher, \
936 NULL, \
937 sizeof(EVP_AES_KEY), \
938 NULL,NULL,NULL,NULL }; \
c5f6da54 939static const EVP_CIPHER aes_##keylen##_##mode = { \
0f113f3e
MC		 940 nid##_##keylen##_##nmode,blocksize, \
941 keylen/8,ivlen, \
942 flags|EVP_CIPH_##MODE##_MODE, \
943 aes_init_key, \
944 aes_##mode##_cipher, \
945 NULL, \
946 sizeof(EVP_AES_KEY), \
947 NULL,NULL,NULL,NULL }; \
c5f6da54
AP		 948const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
949{ return SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; }
950
5158c763 951# define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
c5f6da54 952static const EVP_CIPHER aes_t4_##keylen##_##mode = { \
0f113f3e 953 nid##_##keylen##_##mode,blocksize, \
b1ceb439
TS		 954 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE||EVP_CIPH_##MODE##_MODE==EVP_CIPH_SIV_MODE?2:1)*keylen/8, \
955 ivlen, \
0f113f3e
MC		 956 flags|EVP_CIPH_##MODE##_MODE, \
957 aes_t4_##mode##_init_key, \
958 aes_t4_##mode##_cipher, \
959 aes_##mode##_cleanup, \
960 sizeof(EVP_AES_##MODE##_CTX), \
961 NULL,NULL,aes_##mode##_ctrl,NULL }; \
c5f6da54 962static const EVP_CIPHER aes_##keylen##_##mode = { \
0f113f3e 963 nid##_##keylen##_##mode,blocksize, \
b1ceb439
TS		 964 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE||EVP_CIPH_##MODE##_MODE==EVP_CIPH_SIV_MODE?2:1)*keylen/8, \
965 ivlen, \
0f113f3e
MC		 966 flags|EVP_CIPH_##MODE##_MODE, \
967 aes_##mode##_init_key, \
968 aes_##mode##_cipher, \
969 aes_##mode##_cleanup, \
970 sizeof(EVP_AES_##MODE##_CTX), \
971 NULL,NULL,aes_##mode##_ctrl,NULL }; \
c5f6da54
AP		 972const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
973{ return SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; }
974
96530eea
PS		 975#elif defined(OPENSSL_CPUID_OBJ) && defined(__s390__)
976/*
977 * IBM S390X support
978 */
979# include "s390x_arch.h"
980
55bd169f
PS		 981typedef struct {
982 union {
983 double align;
984 /*-
985 * KM-AES parameter block - begin
986 * (see z/Architecture Principles of Operation >= SA22-7832-06)
987 */
988 struct {
989 unsigned char k[32];
990 } param;
991 /* KM-AES parameter block - end */
992 } km;
993 unsigned int fc;
994} S390X_AES_ECB_CTX;
995
dacd2a87
PS		 996typedef struct {
997 union {
998 double align;
999 /*-
1000 * KMO-AES parameter block - begin
1001 * (see z/Architecture Principles of Operation >= SA22-7832-08)
1002 */
1003 struct {
1004 unsigned char cv[16];
1005 unsigned char k[32];
1006 } param;
1007 /* KMO-AES parameter block - end */
1008 } kmo;
1009 unsigned int fc;
1010
1011 int res;
1012} S390X_AES_OFB_CTX;
1013
74d38a86
PS		 1014typedef struct {
1015 union {
1016 double align;
1017 /*-
1018 * KMF-AES parameter block - begin
1019 * (see z/Architecture Principles of Operation >= SA22-7832-08)
1020 */
1021 struct {
1022 unsigned char cv[16];
1023 unsigned char k[32];
1024 } param;
1025 /* KMF-AES parameter block - end */
1026 } kmf;
1027 unsigned int fc;
1028
1029 int res;
1030} S390X_AES_CFB_CTX;
1031
96530eea
PS		 1032typedef struct {
1033 union {
1034 double align;
1035 /*-
5d2a6f4b
PS		 1036 * KMA-GCM-AES parameter block - begin
1037 * (see z/Architecture Principles of Operation >= SA22-7832-11)
96530eea
PS		 1038 */
1039 struct {
1040 unsigned char reserved[12];
1041 union {
1042 unsigned int w;
1043 unsigned char b[4];
1044 } cv;
1045 union {
1046 unsigned long long g[2];
1047 unsigned char b[16];
1048 } t;
1049 unsigned char h[16];
1050 unsigned long long taadl;
1051 unsigned long long tpcl;
1052 union {
1053 unsigned long long g[2];
1054 unsigned int w[4];
1055 } j0;
1056 unsigned char k[32];
1057 } param;
5d2a6f4b 1058 /* KMA-GCM-AES parameter block - end */
96530eea
PS		 1059 } kma;
1060 unsigned int fc;
1061 int key_set;
1062
1063 unsigned char *iv;
1064 int ivlen;
1065 int iv_set;
1066 int iv_gen;
1067
1068 int taglen;
1069
1070 unsigned char ares[16];
1071 unsigned char mres[16];
1072 unsigned char kres[16];
1073 int areslen;
1074 int mreslen;
1075 int kreslen;
1076
1077 int tls_aad_len;
d6b34570 1078 uint64_t tls_enc_records; /* Number of TLS records encrypted */
96530eea
PS		 1079} S390X_AES_GCM_CTX;
1080
39f5b069
PS		 1081typedef struct {
1082 union {
1083 double align;
1084 /*-
1085 * Padding is chosen so that ccm.kmac_param.k overlaps with key.k and
1086 * ccm.fc with key.k.rounds. Remember that on s390x, an AES_KEY's
1087 * rounds field is used to store the function code and that the key
1088 * schedule is not stored (if aes hardware support is detected).
1089 */
1090 struct {
1091 unsigned char pad[16];
1092 AES_KEY k;
1093 } key;
1094
1095 struct {
1096 /*-
1097 * KMAC-AES parameter block - begin
1098 * (see z/Architecture Principles of Operation >= SA22-7832-08)
1099 */
1100 struct {
1101 union {
1102 unsigned long long g[2];
1103 unsigned char b[16];
1104 } icv;
1105 unsigned char k[32];
1106 } kmac_param;
1107 /* KMAC-AES paramater block - end */
1108
1109 union {
1110 unsigned long long g[2];
1111 unsigned char b[16];
1112 } nonce;
1113 union {
1114 unsigned long long g[2];
1115 unsigned char b[16];
1116 } buf;
1117
1118 unsigned long long blocks;
1119 int l;
1120 int m;
1121 int tls_aad_len;
1122 int iv_set;
1123 int tag_set;
1124 int len_set;
1125 int key_set;
1126
1127 unsigned char pad[140];
1128 unsigned int fc;
1129 } ccm;
1130 } aes;
1131} S390X_AES_CCM_CTX;
1132
55bd169f
PS		 1133/* Convert key size to function code: [16,24,32] -> [18,19,20]. */
1134# define S390X_AES_FC(keylen) (S390X_AES_128 + ((((keylen) << 3) - 128) >> 6))
1135
1136/* Most modes of operation need km for partial block processing. */
1137# define S390X_aes_128_CAPABLE (OPENSSL_s390xcap_P.km[0] & \
1138 S390X_CAPBIT(S390X_AES_128))
1139# define S390X_aes_192_CAPABLE (OPENSSL_s390xcap_P.km[0] & \
1140 S390X_CAPBIT(S390X_AES_192))
1141# define S390X_aes_256_CAPABLE (OPENSSL_s390xcap_P.km[0] & \
1142 S390X_CAPBIT(S390X_AES_256))
96530eea
PS		 1143
1144# define s390x_aes_init_key aes_init_key
1145static int s390x_aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1146 const unsigned char *iv, int enc);
1147
1148# define S390X_aes_128_cbc_CAPABLE 1 /* checked by callee */
1149# define S390X_aes_192_cbc_CAPABLE 1
1150# define S390X_aes_256_cbc_CAPABLE 1
55bd169f
PS		 1151# define S390X_AES_CBC_CTX EVP_AES_KEY
1152
1153# define s390x_aes_cbc_init_key aes_init_key
96530eea
PS		 1154
1155# define s390x_aes_cbc_cipher aes_cbc_cipher
1156static int s390x_aes_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1157 const unsigned char *in, size_t len);
1158
55bd169f
PS		 1159# define S390X_aes_128_ecb_CAPABLE S390X_aes_128_CAPABLE
1160# define S390X_aes_192_ecb_CAPABLE S390X_aes_192_CAPABLE
1161# define S390X_aes_256_ecb_CAPABLE S390X_aes_256_CAPABLE
1162
1163static int s390x_aes_ecb_init_key(EVP_CIPHER_CTX *ctx,
1164 const unsigned char *key,
1165 const unsigned char *iv, int enc)
1166{
1167 S390X_AES_ECB_CTX *cctx = EVP_C_DATA(S390X_AES_ECB_CTX, ctx);
1168 const int keylen = EVP_CIPHER_CTX_key_length(ctx);
1169
1170 cctx->fc = S390X_AES_FC(keylen);
1171 if (!enc)
1172 cctx->fc |= S390X_DECRYPT;
1173
1174 memcpy(cctx->km.param.k, key, keylen);
1175 return 1;
1176}
96530eea 1177
96530eea 1178static int s390x_aes_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
55bd169f
PS		 1179 const unsigned char *in, size_t len)
1180{
1181 S390X_AES_ECB_CTX *cctx = EVP_C_DATA(S390X_AES_ECB_CTX, ctx);
1182
1183 s390x_km(in, len, out, cctx->fc, &cctx->km.param);
1184 return 1;
1185}
96530eea 1186
dacd2a87
PS		 1187# define S390X_aes_128_ofb_CAPABLE (S390X_aes_128_CAPABLE && \
1188 (OPENSSL_s390xcap_P.kmo[0] & \
1189 S390X_CAPBIT(S390X_AES_128)))
1190# define S390X_aes_192_ofb_CAPABLE (S390X_aes_192_CAPABLE && \
1191 (OPENSSL_s390xcap_P.kmo[0] & \
1192 S390X_CAPBIT(S390X_AES_192)))
1193# define S390X_aes_256_ofb_CAPABLE (S390X_aes_256_CAPABLE && \
1194 (OPENSSL_s390xcap_P.kmo[0] & \
1195 S390X_CAPBIT(S390X_AES_256)))
1196
1197static int s390x_aes_ofb_init_key(EVP_CIPHER_CTX *ctx,
1198 const unsigned char *key,
1199 const unsigned char *ivec, int enc)
1200{
1201 S390X_AES_OFB_CTX *cctx = EVP_C_DATA(S390X_AES_OFB_CTX, ctx);
1202 const unsigned char *iv = EVP_CIPHER_CTX_original_iv(ctx);
1203 const int keylen = EVP_CIPHER_CTX_key_length(ctx);
1204 const int ivlen = EVP_CIPHER_CTX_iv_length(ctx);
55bd169f 1205
dacd2a87
PS		 1206 memcpy(cctx->kmo.param.cv, iv, ivlen);
1207 memcpy(cctx->kmo.param.k, key, keylen);
1208 cctx->fc = S390X_AES_FC(keylen);
1209 cctx->res = 0;
1210 return 1;
1211}
96530eea 1212
96530eea 1213static int s390x_aes_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
dacd2a87
PS		 1214 const unsigned char *in, size_t len)
1215{
1216 S390X_AES_OFB_CTX *cctx = EVP_C_DATA(S390X_AES_OFB_CTX, ctx);
1217 int n = cctx->res;
1218 int rem;
1219
1220 while (n && len) {
1221 *out = *in ^ cctx->kmo.param.cv[n];
1222 n = (n + 1) & 0xf;
1223 --len;
1224 ++in;
1225 ++out;
1226 }
1227
1228 rem = len & 0xf;
1229
1230 len &= ~(size_t)0xf;
1231 if (len) {
1232 s390x_kmo(in, len, out, cctx->fc, &cctx->kmo.param);
1233
1234 out += len;
1235 in += len;
1236 }
1237
1238 if (rem) {
1239 s390x_km(cctx->kmo.param.cv, 16, cctx->kmo.param.cv, cctx->fc,
1240 cctx->kmo.param.k);
1241
1242 while (rem--) {
1243 out[n] = in[n] ^ cctx->kmo.param.cv[n];
1244 ++n;
1245 }
1246 }
1247
1248 cctx->res = n;
1249 return 1;
1250}
96530eea 1251
74d38a86
PS		 1252# define S390X_aes_128_cfb_CAPABLE (S390X_aes_128_CAPABLE && \
1253 (OPENSSL_s390xcap_P.kmf[0] & \
1254 S390X_CAPBIT(S390X_AES_128)))
1255# define S390X_aes_192_cfb_CAPABLE (S390X_aes_192_CAPABLE && \
1256 (OPENSSL_s390xcap_P.kmf[0] & \
1257 S390X_CAPBIT(S390X_AES_192)))
1258# define S390X_aes_256_cfb_CAPABLE (S390X_aes_256_CAPABLE && \
1259 (OPENSSL_s390xcap_P.kmf[0] & \
1260 S390X_CAPBIT(S390X_AES_256)))
1261
1262static int s390x_aes_cfb_init_key(EVP_CIPHER_CTX *ctx,
1263 const unsigned char *key,
1264 const unsigned char *ivec, int enc)
1265{
1266 S390X_AES_CFB_CTX *cctx = EVP_C_DATA(S390X_AES_CFB_CTX, ctx);
1267 const unsigned char *iv = EVP_CIPHER_CTX_original_iv(ctx);
1268 const int keylen = EVP_CIPHER_CTX_key_length(ctx);
1269 const int ivlen = EVP_CIPHER_CTX_iv_length(ctx);
1270
1271 cctx->fc = S390X_AES_FC(keylen);
1272 cctx->fc |= 16 << 24; /* 16 bytes cipher feedback */
1273 if (!enc)
1274 cctx->fc |= S390X_DECRYPT;
55bd169f 1275
74d38a86
PS		 1276 cctx->res = 0;
1277 memcpy(cctx->kmf.param.cv, iv, ivlen);
1278 memcpy(cctx->kmf.param.k, key, keylen);
1279 return 1;
1280}
96530eea 1281
96530eea 1282static int s390x_aes_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
74d38a86
PS		 1283 const unsigned char *in, size_t len)
1284{
1285 S390X_AES_CFB_CTX *cctx = EVP_C_DATA(S390X_AES_CFB_CTX, ctx);
1286 const int keylen = EVP_CIPHER_CTX_key_length(ctx);
1287 const int enc = EVP_CIPHER_CTX_encrypting(ctx);
1288 int n = cctx->res;
1289 int rem;
1290 unsigned char tmp;
1291
1292 while (n && len) {
1293 tmp = *in;
1294 *out = cctx->kmf.param.cv[n] ^ tmp;
1295 cctx->kmf.param.cv[n] = enc ? *out : tmp;
1296 n = (n + 1) & 0xf;
1297 --len;
1298 ++in;
1299 ++out;
1300 }
1301
1302 rem = len & 0xf;
1303
1304 len &= ~(size_t)0xf;
1305 if (len) {
1306 s390x_kmf(in, len, out, cctx->fc, &cctx->kmf.param);
1307
1308 out += len;
1309 in += len;
1310 }
1311
1312 if (rem) {
1313 s390x_km(cctx->kmf.param.cv, 16, cctx->kmf.param.cv,
1314 S390X_AES_FC(keylen), cctx->kmf.param.k);
1315
1316 while (rem--) {
1317 tmp = in[n];
1318 out[n] = cctx->kmf.param.cv[n] ^ tmp;
1319 cctx->kmf.param.cv[n] = enc ? out[n] : tmp;
1320 ++n;
1321 }
1322 }
96530eea 1323
74d38a86
PS		 1324 cctx->res = n;
1325 return 1;
1326}
1327
1328# define S390X_aes_128_cfb8_CAPABLE (OPENSSL_s390xcap_P.kmf[0] & \
1329 S390X_CAPBIT(S390X_AES_128))
1330# define S390X_aes_192_cfb8_CAPABLE (OPENSSL_s390xcap_P.kmf[0] & \
1331 S390X_CAPBIT(S390X_AES_192))
1332# define S390X_aes_256_cfb8_CAPABLE (OPENSSL_s390xcap_P.kmf[0] & \
1333 S390X_CAPBIT(S390X_AES_256))
1334
1335static int s390x_aes_cfb8_init_key(EVP_CIPHER_CTX *ctx,
1336 const unsigned char *key,
1337 const unsigned char *ivec, int enc)
1338{
1339 S390X_AES_CFB_CTX *cctx = EVP_C_DATA(S390X_AES_CFB_CTX, ctx);
1340 const unsigned char *iv = EVP_CIPHER_CTX_original_iv(ctx);
1341 const int keylen = EVP_CIPHER_CTX_key_length(ctx);
1342 const int ivlen = EVP_CIPHER_CTX_iv_length(ctx);
1343
1344 cctx->fc = S390X_AES_FC(keylen);
1345 cctx->fc |= 1 << 24; /* 1 byte cipher feedback */
1346 if (!enc)
1347 cctx->fc |= S390X_DECRYPT;
96530eea 1348
74d38a86
PS		 1349 memcpy(cctx->kmf.param.cv, iv, ivlen);
1350 memcpy(cctx->kmf.param.k, key, keylen);
1351 return 1;
1352}
55bd169f 1353
96530eea 1354static int s390x_aes_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
74d38a86
PS		 1355 const unsigned char *in, size_t len)
1356{
1357 S390X_AES_CFB_CTX *cctx = EVP_C_DATA(S390X_AES_CFB_CTX, ctx);
1358
1359 s390x_kmf(in, len, out, cctx->fc, &cctx->kmf.param);
1360 return 1;
1361}
96530eea
PS		 1362
1363# define S390X_aes_128_cfb1_CAPABLE 0
1364# define S390X_aes_192_cfb1_CAPABLE 0
1365# define S390X_aes_256_cfb1_CAPABLE 0
1366
55bd169f
PS		 1367# define s390x_aes_cfb1_init_key aes_init_key
1368
96530eea
PS		 1369# define s390x_aes_cfb1_cipher aes_cfb1_cipher
1370static int s390x_aes_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1371 const unsigned char *in, size_t len);
1372
1373# define S390X_aes_128_ctr_CAPABLE 1 /* checked by callee */
1374# define S390X_aes_192_ctr_CAPABLE 1
1375# define S390X_aes_256_ctr_CAPABLE 1
55bd169f
PS		 1376# define S390X_AES_CTR_CTX EVP_AES_KEY
1377
1378# define s390x_aes_ctr_init_key aes_init_key
96530eea
PS		 1379
1380# define s390x_aes_ctr_cipher aes_ctr_cipher
1381static int s390x_aes_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1382 const unsigned char *in, size_t len);
1383
1384# define S390X_aes_128_gcm_CAPABLE (S390X_aes_128_CAPABLE && \
1385 (OPENSSL_s390xcap_P.kma[0] & \
1386 S390X_CAPBIT(S390X_AES_128)))
1387# define S390X_aes_192_gcm_CAPABLE (S390X_aes_192_CAPABLE && \
1388 (OPENSSL_s390xcap_P.kma[0] & \
1389 S390X_CAPBIT(S390X_AES_192)))
1390# define S390X_aes_256_gcm_CAPABLE (S390X_aes_256_CAPABLE && \
1391 (OPENSSL_s390xcap_P.kma[0] & \
1392 S390X_CAPBIT(S390X_AES_256)))
1393
1394/* iv + padding length for iv lenghts != 12 */
1395# define S390X_gcm_ivpadlen(i) ((((i) + 15) >> 4 << 4) + 16)
1396
5d2a6f4b
PS		 1397/*-
1398 * Process additional authenticated data. Returns 0 on success. Code is
1399 * big-endian.
1400 */
96530eea
PS		 1401static int s390x_aes_gcm_aad(S390X_AES_GCM_CTX *ctx, const unsigned char *aad,
1402 size_t len)
1403{
1404 unsigned long long alen;
1405 int n, rem;
1406
1407 if (ctx->kma.param.tpcl)
1408 return -2;
1409
1410 alen = ctx->kma.param.taadl + len;
1411 if (alen > (U64(1) << 61) || (sizeof(len) == 8 && alen < len))
1412 return -1;
1413 ctx->kma.param.taadl = alen;
1414
1415 n = ctx->areslen;
1416 if (n) {
1417 while (n && len) {
1418 ctx->ares[n] = *aad;
1419 n = (n + 1) & 0xf;
1420 ++aad;
1421 --len;
1422 }
1423 /* ctx->ares contains a complete block if offset has wrapped around */
1424 if (!n) {
1425 s390x_kma(ctx->ares, 16, NULL, 0, NULL, ctx->fc, &ctx->kma.param);
1426 ctx->fc |= S390X_KMA_HS;
1427 }
1428 ctx->areslen = n;
1429 }
1430
1431 rem = len & 0xf;
1432
25868993 1433 len &= ~(size_t)0xf;
96530eea
PS		 1434 if (len) {
1435 s390x_kma(aad, len, NULL, 0, NULL, ctx->fc, &ctx->kma.param);
1436 aad += len;
1437 ctx->fc |= S390X_KMA_HS;
1438 }
1439
1440 if (rem) {
1441 ctx->areslen = rem;
1442
1443 do {
1444 --rem;
1445 ctx->ares[rem] = aad[rem];
1446 } while (rem);
1447 }
1448 return 0;
1449}
1450
5d2a6f4b
PS		 1451/*-
1452 * En/de-crypt plain/cipher-text and authenticate ciphertext. Returns 0 for
1453 * success. Code is big-endian.
1454 */
96530eea
PS		 1455static int s390x_aes_gcm(S390X_AES_GCM_CTX *ctx, const unsigned char *in,
1456 unsigned char *out, size_t len)
1457{
1458 const unsigned char *inptr;
1459 unsigned long long mlen;
1460 union {
1461 unsigned int w[4];
1462 unsigned char b[16];
1463 } buf;
1464 size_t inlen;
1465 int n, rem, i;
1466
1467 mlen = ctx->kma.param.tpcl + len;
1468 if (mlen > ((U64(1) << 36) - 32) || (sizeof(len) == 8 && mlen < len))
1469 return -1;
1470 ctx->kma.param.tpcl = mlen;
1471
1472 n = ctx->mreslen;
1473 if (n) {
1474 inptr = in;
1475 inlen = len;
1476 while (n && inlen) {
1477 ctx->mres[n] = *inptr;
1478 n = (n + 1) & 0xf;
1479 ++inptr;
1480 --inlen;
1481 }
1482 /* ctx->mres contains a complete block if offset has wrapped around */
1483 if (!n) {
1484 s390x_kma(ctx->ares, ctx->areslen, ctx->mres, 16, buf.b,
1485 ctx->fc | S390X_KMA_LAAD, &ctx->kma.param);
1486 ctx->fc |= S390X_KMA_HS;
1487 ctx->areslen = 0;
1488
1489 /* previous call already encrypted/decrypted its remainder,
1490 * see comment below */
1491 n = ctx->mreslen;
1492 while (n) {
1493 *out = buf.b[n];
1494 n = (n + 1) & 0xf;
1495 ++out;
1496 ++in;
1497 --len;
1498 }
1499 ctx->mreslen = 0;
1500 }
1501 }
1502
1503 rem = len & 0xf;
1504
25868993 1505 len &= ~(size_t)0xf;
96530eea
PS		 1506 if (len) {
1507 s390x_kma(ctx->ares, ctx->areslen, in, len, out,
1508 ctx->fc | S390X_KMA_LAAD, &ctx->kma.param);
1509 in += len;
1510 out += len;
1511 ctx->fc |= S390X_KMA_HS;
1512 ctx->areslen = 0;
1513 }
1514
1515 /*-
1516 * If there is a remainder, it has to be saved such that it can be
1517 * processed by kma later. However, we also have to do the for-now
1518 * unauthenticated encryption/decryption part here and now...
1519 */
1520 if (rem) {
1521 if (!ctx->mreslen) {
1522 buf.w[0] = ctx->kma.param.j0.w[0];
1523 buf.w[1] = ctx->kma.param.j0.w[1];
1524 buf.w[2] = ctx->kma.param.j0.w[2];
1525 buf.w[3] = ctx->kma.param.cv.w + 1;
1526 s390x_km(buf.b, 16, ctx->kres, ctx->fc & 0x1f, &ctx->kma.param.k);
1527 }
1528
1529 n = ctx->mreslen;
1530 for (i = 0; i < rem; i++) {
1531 ctx->mres[n + i] = in[i];
1532 out[i] = in[i] ^ ctx->kres[n + i];
1533 }
1534
1535 ctx->mreslen += rem;
1536 }
1537 return 0;
1538}
1539
5d2a6f4b
PS		 1540/*-
1541 * Initialize context structure. Code is big-endian.
1542 */
96530eea
PS		 1543static void s390x_aes_gcm_setiv(S390X_AES_GCM_CTX *ctx,
1544 const unsigned char *iv)
1545{
1546 ctx->kma.param.t.g[0] = 0;
1547 ctx->kma.param.t.g[1] = 0;
1548 ctx->kma.param.tpcl = 0;
1549 ctx->kma.param.taadl = 0;
1550 ctx->mreslen = 0;
1551 ctx->areslen = 0;
1552 ctx->kreslen = 0;
1553
1554 if (ctx->ivlen == 12) {
1555 memcpy(&ctx->kma.param.j0, iv, ctx->ivlen);
1556 ctx->kma.param.j0.w[3] = 1;
1557 ctx->kma.param.cv.w = 1;
1558 } else {
1559 /* ctx->iv has the right size and is already padded. */
1560 memcpy(ctx->iv, iv, ctx->ivlen);
1561 s390x_kma(ctx->iv, S390X_gcm_ivpadlen(ctx->ivlen), NULL, 0, NULL,
1562 ctx->fc, &ctx->kma.param);
1563 ctx->fc |= S390X_KMA_HS;
1564
1565 ctx->kma.param.j0.g[0] = ctx->kma.param.t.g[0];
1566 ctx->kma.param.j0.g[1] = ctx->kma.param.t.g[1];
1567 ctx->kma.param.cv.w = ctx->kma.param.j0.w[3];
1568 ctx->kma.param.t.g[0] = 0;
1569 ctx->kma.param.t.g[1] = 0;
1570 }
1571}
1572
5d2a6f4b
PS		 1573/*-
1574 * Performs various operations on the context structure depending on control
1575 * type. Returns 1 for success, 0 for failure and -1 for unknown control type.
1576 * Code is big-endian.
1577 */
96530eea
PS		 1578static int s390x_aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1579{
1580 S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, c);
1581 S390X_AES_GCM_CTX *gctx_out;
1582 EVP_CIPHER_CTX *out;
1583 unsigned char *buf, *iv;
1584 int ivlen, enc, len;
1585
1586 switch (type) {
1587 case EVP_CTRL_INIT:
1588 ivlen = EVP_CIPHER_CTX_iv_length(c);
1589 iv = EVP_CIPHER_CTX_iv_noconst(c);
1590 gctx->key_set = 0;
1591 gctx->iv_set = 0;
1592 gctx->ivlen = ivlen;
1593 gctx->iv = iv;
1594 gctx->taglen = -1;
1595 gctx->iv_gen = 0;
1596 gctx->tls_aad_len = -1;
1597 return 1;
1598
1599 case EVP_CTRL_AEAD_SET_IVLEN:
1600 if (arg <= 0)
1601 return 0;
1602
1603 if (arg != 12) {
1604 iv = EVP_CIPHER_CTX_iv_noconst(c);
1605 len = S390X_gcm_ivpadlen(arg);
1606
1607 /* Allocate memory for iv if needed. */
1608 if (gctx->ivlen == 12 || len > S390X_gcm_ivpadlen(gctx->ivlen)) {
1609 if (gctx->iv != iv)
1610 OPENSSL_free(gctx->iv);
1611
cdb10bae
RS		 1612 if ((gctx->iv = OPENSSL_malloc(len)) == NULL) {
1613 EVPerr(EVP_F_S390X_AES_GCM_CTRL, ERR_R_MALLOC_FAILURE);
96530eea 1614 return 0;
cdb10bae 1615 }
96530eea
PS		 1616 }
1617 /* Add padding. */
1618 memset(gctx->iv + arg, 0, len - arg - 8);
1619 *((unsigned long long *)(gctx->iv + len - 8)) = arg << 3;
1620 }
1621 gctx->ivlen = arg;
1622 return 1;
1623
1624 case EVP_CTRL_AEAD_SET_TAG:
1625 buf = EVP_CIPHER_CTX_buf_noconst(c);
1626 enc = EVP_CIPHER_CTX_encrypting(c);
1627 if (arg <= 0 || arg > 16 || enc)
1628 return 0;
1629
1630 memcpy(buf, ptr, arg);
1631 gctx->taglen = arg;
1632 return 1;
1633
1634 case EVP_CTRL_AEAD_GET_TAG:
1635 enc = EVP_CIPHER_CTX_encrypting(c);
1636 if (arg <= 0 || arg > 16 || !enc || gctx->taglen < 0)
1637 return 0;
1638
1639 memcpy(ptr, gctx->kma.param.t.b, arg);
1640 return 1;
1641
1642 case EVP_CTRL_GCM_SET_IV_FIXED:
1643 /* Special case: -1 length restores whole iv */
1644 if (arg == -1) {
1645 memcpy(gctx->iv, ptr, gctx->ivlen);
1646 gctx->iv_gen = 1;
1647 return 1;
1648 }
1649 /*
1650 * Fixed field must be at least 4 bytes and invocation field at least
1651 * 8.
1652 */
1653 if ((arg < 4) || (gctx->ivlen - arg) < 8)
1654 return 0;
1655
1656 if (arg)
1657 memcpy(gctx->iv, ptr, arg);
1658
1659 enc = EVP_CIPHER_CTX_encrypting(c);
16cfc2c9
KR		 1660 if (enc && RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0)
1661 return 0;
96530eea
PS		 1662
1663 gctx->iv_gen = 1;
1664 return 1;
1665
1666 case EVP_CTRL_GCM_IV_GEN:
1667 if (gctx->iv_gen == 0 || gctx->key_set == 0)
1668 return 0;
1669
1670 s390x_aes_gcm_setiv(gctx, gctx->iv);
1671
1672 if (arg <= 0 || arg > gctx->ivlen)
1673 arg = gctx->ivlen;
1674
1675 memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
1676 /*
1677 * Invocation field will be at least 8 bytes in size and so no need
1678 * to check wrap around or increment more than last 8 bytes.
1679 */
03a5e5ae 1680 ctr64_inc(gctx->iv + gctx->ivlen - 8);
96530eea
PS		 1681 gctx->iv_set = 1;
1682 return 1;
1683
1684 case EVP_CTRL_GCM_SET_IV_INV:
1685 enc = EVP_CIPHER_CTX_encrypting(c);
1686 if (gctx->iv_gen == 0 || gctx->key_set == 0 || enc)
1687 return 0;
1688
1689 memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
1690 s390x_aes_gcm_setiv(gctx, gctx->iv);
1691 gctx->iv_set = 1;
1692 return 1;
1693
1694 case EVP_CTRL_AEAD_TLS1_AAD:
1695 /* Save the aad for later use. */
1696 if (arg != EVP_AEAD_TLS1_AAD_LEN)
1697 return 0;
1698
1699 buf = EVP_CIPHER_CTX_buf_noconst(c);
1700 memcpy(buf, ptr, arg);
1701 gctx->tls_aad_len = arg;
d6b34570 1702 gctx->tls_enc_records = 0;
96530eea
PS		 1703
1704 len = buf[arg - 2] << 8 | buf[arg - 1];
1705 /* Correct length for explicit iv. */
1706 if (len < EVP_GCM_TLS_EXPLICIT_IV_LEN)
1707 return 0;
1708 len -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
1709
1710 /* If decrypting correct for tag too. */
1711 enc = EVP_CIPHER_CTX_encrypting(c);
1712 if (!enc) {
1713 if (len < EVP_GCM_TLS_TAG_LEN)
1714 return 0;
1715 len -= EVP_GCM_TLS_TAG_LEN;
1716 }
1717 buf[arg - 2] = len >> 8;
1718 buf[arg - 1] = len & 0xff;
1719 /* Extra padding: tag appended to record. */
1720 return EVP_GCM_TLS_TAG_LEN;
1721
1722 case EVP_CTRL_COPY:
1723 out = ptr;
1724 gctx_out = EVP_C_DATA(S390X_AES_GCM_CTX, out);
1725 iv = EVP_CIPHER_CTX_iv_noconst(c);
1726
1727 if (gctx->iv == iv) {
1728 gctx_out->iv = EVP_CIPHER_CTX_iv_noconst(out);
1729 } else {
1730 len = S390X_gcm_ivpadlen(gctx->ivlen);
1731
cdb10bae
RS		 1732 if ((gctx_out->iv = OPENSSL_malloc(len)) == NULL) {
1733 EVPerr(EVP_F_S390X_AES_GCM_CTRL, ERR_R_MALLOC_FAILURE);
96530eea 1734 return 0;
cdb10bae 1735 }
96530eea
PS		 1736
1737 memcpy(gctx_out->iv, gctx->iv, len);
1738 }
1739 return 1;
1740
1741 default:
1742 return -1;
1743 }
1744}
1745
5d2a6f4b
PS		 1746/*-
1747 * Set key and/or iv. Returns 1 on success. Otherwise 0 is returned.
1748 */
96530eea
PS		 1749static int s390x_aes_gcm_init_key(EVP_CIPHER_CTX *ctx,
1750 const unsigned char *key,
1751 const unsigned char *iv, int enc)
1752{
1753 S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, ctx);
1754 int keylen;
1755
1756 if (iv == NULL && key == NULL)
1757 return 1;
1758
1759 if (key != NULL) {
1760 keylen = EVP_CIPHER_CTX_key_length(ctx);
1761 memcpy(&gctx->kma.param.k, key, keylen);
1762
8eb399fb 1763 gctx->fc = S390X_AES_FC(keylen);
96530eea
PS		 1764 if (!enc)
1765 gctx->fc |= S390X_DECRYPT;
1766
1767 if (iv == NULL && gctx->iv_set)
1768 iv = gctx->iv;
1769
1770 if (iv != NULL) {
1771 s390x_aes_gcm_setiv(gctx, iv);
1772 gctx->iv_set = 1;
1773 }
1774 gctx->key_set = 1;
1775 } else {
1776 if (gctx->key_set)
1777 s390x_aes_gcm_setiv(gctx, iv);
1778 else
1779 memcpy(gctx->iv, iv, gctx->ivlen);
1780
1781 gctx->iv_set = 1;
1782 gctx->iv_gen = 0;
1783 }
1784 return 1;
1785}
1786
5d2a6f4b
PS		 1787/*-
1788 * En/de-crypt and authenticate TLS packet. Returns the number of bytes written
1789 * if successful. Otherwise -1 is returned. Code is big-endian.
1790 */
96530eea
PS		 1791static int s390x_aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1792 const unsigned char *in, size_t len)
1793{
1794 S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, ctx);
1795 const unsigned char *buf = EVP_CIPHER_CTX_buf_noconst(ctx);
1796 const int enc = EVP_CIPHER_CTX_encrypting(ctx);
1797 int rv = -1;
1798
1799 if (out != in || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN))
1800 return -1;
1801
d6b34570
P		 1802 /*
1803 * Check for too many keys as per FIPS 140-2 IG A.5 "Key/IV Pair Uniqueness
1804 * Requirements from SP 800-38D". The requirements is for one party to the
1805 * communication to fail after 2^64 - 1 keys. We do this on the encrypting
1806 * side only.
1807 */
1808 if (ctx->encrypt && ++gctx->tls_enc_records == 0) {
1809 EVPerr(EVP_F_S390X_AES_GCM_TLS_CIPHER, EVP_R_TOO_MANY_RECORDS);
1810 goto err;
1811 }
1812
96530eea
PS		 1813 if (EVP_CIPHER_CTX_ctrl(ctx, enc ? EVP_CTRL_GCM_IV_GEN
1814 : EVP_CTRL_GCM_SET_IV_INV,
1815 EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
1816 goto err;
1817
1818 in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
1819 out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
1820 len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
1821
1822 gctx->kma.param.taadl = gctx->tls_aad_len << 3;
1823 gctx->kma.param.tpcl = len << 3;
1824 s390x_kma(buf, gctx->tls_aad_len, in, len, out,
1825 gctx->fc | S390X_KMA_LAAD | S390X_KMA_LPC, &gctx->kma.param);
1826
1827 if (enc) {
1828 memcpy(out + len, gctx->kma.param.t.b, EVP_GCM_TLS_TAG_LEN);
1829 rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
1830 } else {
1831 if (CRYPTO_memcmp(gctx->kma.param.t.b, in + len,
1832 EVP_GCM_TLS_TAG_LEN)) {
1833 OPENSSL_cleanse(out, len);
1834 goto err;
1835 }
1836 rv = len;
1837 }
1838err:
1839 gctx->iv_set = 0;
1840 gctx->tls_aad_len = -1;
1841 return rv;
1842}
1843
5d2a6f4b
PS		 1844/*-
1845 * Called from EVP layer to initialize context, process additional
1846 * authenticated data, en/de-crypt plain/cipher-text and authenticate
1847 * ciphertext or process a TLS packet, depending on context. Returns bytes
1848 * written on success. Otherwise -1 is returned. Code is big-endian.
1849 */
96530eea
PS		 1850static int s390x_aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1851 const unsigned char *in, size_t len)
1852{
1853 S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, ctx);
1854 unsigned char *buf, tmp[16];
1855 int enc;
1856
1857 if (!gctx->key_set)
1858 return -1;
1859
1860 if (gctx->tls_aad_len >= 0)
1861 return s390x_aes_gcm_tls_cipher(ctx, out, in, len);
1862
1863 if (!gctx->iv_set)
1864 return -1;
1865
1866 if (in != NULL) {
1867 if (out == NULL) {
1868 if (s390x_aes_gcm_aad(gctx, in, len))
1869 return -1;
1870 } else {
1871 if (s390x_aes_gcm(gctx, in, out, len))
1872 return -1;
1873 }
1874 return len;
1875 } else {
1876 gctx->kma.param.taadl <<= 3;
1877 gctx->kma.param.tpcl <<= 3;
1878 s390x_kma(gctx->ares, gctx->areslen, gctx->mres, gctx->mreslen, tmp,
1879 gctx->fc | S390X_KMA_LAAD | S390X_KMA_LPC, &gctx->kma.param);
1880 /* recall that we already did en-/decrypt gctx->mres
1881 * and returned it to caller... */
1882 OPENSSL_cleanse(tmp, gctx->mreslen);
1883 gctx->iv_set = 0;
1884
1885 enc = EVP_CIPHER_CTX_encrypting(ctx);
1886 if (enc) {
1887 gctx->taglen = 16;
1888 } else {
1889 if (gctx->taglen < 0)
1890 return -1;
1891
1892 buf = EVP_CIPHER_CTX_buf_noconst(ctx);
1893 if (CRYPTO_memcmp(buf, gctx->kma.param.t.b, gctx->taglen))
1894 return -1;
1895 }
1896 return 0;
1897 }
1898}
1899
1900static int s390x_aes_gcm_cleanup(EVP_CIPHER_CTX *c)
1901{
1902 S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, c);
1903 const unsigned char *iv;
1904
1905 if (gctx == NULL)
1906 return 0;
1907
1908 iv = EVP_CIPHER_CTX_iv(c);
1909 if (iv != gctx->iv)
1910 OPENSSL_free(gctx->iv);
1911
1912 OPENSSL_cleanse(gctx, sizeof(*gctx));
1913 return 1;
1914}
1915
1916# define S390X_AES_XTS_CTX EVP_AES_XTS_CTX
1917# define S390X_aes_128_xts_CAPABLE 1 /* checked by callee */
1918# define S390X_aes_256_xts_CAPABLE 1
1919
1920# define s390x_aes_xts_init_key aes_xts_init_key
1921static int s390x_aes_xts_init_key(EVP_CIPHER_CTX *ctx,
1922 const unsigned char *key,
1923 const unsigned char *iv, int enc);
1924# define s390x_aes_xts_cipher aes_xts_cipher
1925static int s390x_aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1926 const unsigned char *in, size_t len);
1927# define s390x_aes_xts_ctrl aes_xts_ctrl
1928static int s390x_aes_xts_ctrl(EVP_CIPHER_CTX *, int type, int arg, void *ptr);
1929# define s390x_aes_xts_cleanup aes_xts_cleanup
1930
39f5b069
PS		 1931# define S390X_aes_128_ccm_CAPABLE (S390X_aes_128_CAPABLE && \
1932 (OPENSSL_s390xcap_P.kmac[0] & \
1933 S390X_CAPBIT(S390X_AES_128)))
1934# define S390X_aes_192_ccm_CAPABLE (S390X_aes_192_CAPABLE && \
1935 (OPENSSL_s390xcap_P.kmac[0] & \
1936 S390X_CAPBIT(S390X_AES_192)))
1937# define S390X_aes_256_ccm_CAPABLE (S390X_aes_256_CAPABLE && \
1938 (OPENSSL_s390xcap_P.kmac[0] & \
1939 S390X_CAPBIT(S390X_AES_256)))
1940
1941# define S390X_CCM_AAD_FLAG 0x40
1942
1943/*-
1944 * Set nonce and length fields. Code is big-endian.
1945 */
1946static inline void s390x_aes_ccm_setiv(S390X_AES_CCM_CTX *ctx,
1947 const unsigned char *nonce,
1948 size_t mlen)
1949{
1950 ctx->aes.ccm.nonce.b[0] &= ~S390X_CCM_AAD_FLAG;
1951 ctx->aes.ccm.nonce.g[1] = mlen;
1952 memcpy(ctx->aes.ccm.nonce.b + 1, nonce, 15 - ctx->aes.ccm.l);
1953}
1954
1955/*-
1956 * Process additional authenticated data. Code is big-endian.
1957 */
1958static void s390x_aes_ccm_aad(S390X_AES_CCM_CTX *ctx, const unsigned char *aad,
1959 size_t alen)
1960{
1961 unsigned char *ptr;
1962 int i, rem;
1963
1964 if (!alen)
1965 return;
1966
1967 ctx->aes.ccm.nonce.b[0] |= S390X_CCM_AAD_FLAG;
1968
1969 /* Suppress 'type-punned pointer dereference' warning. */
1970 ptr = ctx->aes.ccm.buf.b;
1971
1972 if (alen < ((1 << 16) - (1 << 8))) {
1973 *(uint16_t *)ptr = alen;
1974 i = 2;
1975 } else if (sizeof(alen) == 8
1976 && alen >= (size_t)1 << (32 % (sizeof(alen) * 8))) {
1977 *(uint16_t *)ptr = 0xffff;
1978 *(uint64_t *)(ptr + 2) = alen;
1979 i = 10;
1980 } else {
1981 *(uint16_t *)ptr = 0xfffe;
1982 *(uint32_t *)(ptr + 2) = alen;
1983 i = 6;
1984 }
1985
1986 while (i < 16 && alen) {
1987 ctx->aes.ccm.buf.b[i] = *aad;
1988 ++aad;
1989 --alen;
1990 ++i;
1991 }
1992 while (i < 16) {
1993 ctx->aes.ccm.buf.b[i] = 0;
1994 ++i;
1995 }
1996
1997 ctx->aes.ccm.kmac_param.icv.g[0] = 0;
1998 ctx->aes.ccm.kmac_param.icv.g[1] = 0;
1999 s390x_kmac(ctx->aes.ccm.nonce.b, 32, ctx->aes.ccm.fc,
2000 &ctx->aes.ccm.kmac_param);
2001 ctx->aes.ccm.blocks += 2;
2002
2003 rem = alen & 0xf;
25868993 2004 alen &= ~(size_t)0xf;
39f5b069
PS		 2005 if (alen) {
2006 s390x_kmac(aad, alen, ctx->aes.ccm.fc, &ctx->aes.ccm.kmac_param);
2007 ctx->aes.ccm.blocks += alen >> 4;
2008 aad += alen;
2009 }
2010 if (rem) {
2011 for (i = 0; i < rem; i++)
2012 ctx->aes.ccm.kmac_param.icv.b[i] ^= aad[i];
2013
2014 s390x_km(ctx->aes.ccm.kmac_param.icv.b, 16,
2015 ctx->aes.ccm.kmac_param.icv.b, ctx->aes.ccm.fc,
2016 ctx->aes.ccm.kmac_param.k);
2017 ctx->aes.ccm.blocks++;
2018 }
2019}
2020
2021/*-
2022 * En/de-crypt plain/cipher-text. Compute tag from plaintext. Returns 0 for
2023 * success.
2024 */
2025static int s390x_aes_ccm(S390X_AES_CCM_CTX *ctx, const unsigned char *in,
2026 unsigned char *out, size_t len, int enc)
2027{
2028 size_t n, rem;
2029 unsigned int i, l, num;
2030 unsigned char flags;
2031
2032 flags = ctx->aes.ccm.nonce.b[0];
2033 if (!(flags & S390X_CCM_AAD_FLAG)) {
2034 s390x_km(ctx->aes.ccm.nonce.b, 16, ctx->aes.ccm.kmac_param.icv.b,
2035 ctx->aes.ccm.fc, ctx->aes.ccm.kmac_param.k);
2036 ctx->aes.ccm.blocks++;
2037 }
2038 l = flags & 0x7;
2039 ctx->aes.ccm.nonce.b[0] = l;
2040
2041 /*-
2042 * Reconstruct length from encoded length field
2043 * and initialize it with counter value.
2044 */
2045 n = 0;
2046 for (i = 15 - l; i < 15; i++) {
2047 n |= ctx->aes.ccm.nonce.b[i];
2048 ctx->aes.ccm.nonce.b[i] = 0;
2049 n <<= 8;
2050 }
2051 n |= ctx->aes.ccm.nonce.b[15];
2052 ctx->aes.ccm.nonce.b[15] = 1;
2053
2054 if (n != len)
2055 return -1; /* length mismatch */
2056
2057 if (enc) {
2058 /* Two operations per block plus one for tag encryption */
2059 ctx->aes.ccm.blocks += (((len + 15) >> 4) << 1) + 1;
2060 if (ctx->aes.ccm.blocks > (1ULL << 61))
2061 return -2; /* too much data */
2062 }
2063
2064 num = 0;
2065 rem = len & 0xf;
25868993 2066 len &= ~(size_t)0xf;
39f5b069
PS		 2067
2068 if (enc) {
2069 /* mac-then-encrypt */
2070 if (len)
2071 s390x_kmac(in, len, ctx->aes.ccm.fc, &ctx->aes.ccm.kmac_param);
2072 if (rem) {
2073 for (i = 0; i < rem; i++)
2074 ctx->aes.ccm.kmac_param.icv.b[i] ^= in[len + i];
2075
2076 s390x_km(ctx->aes.ccm.kmac_param.icv.b, 16,
2077 ctx->aes.ccm.kmac_param.icv.b, ctx->aes.ccm.fc,
2078 ctx->aes.ccm.kmac_param.k);
2079 }
2080
2081 CRYPTO_ctr128_encrypt_ctr32(in, out, len + rem, &ctx->aes.key.k,
2082 ctx->aes.ccm.nonce.b, ctx->aes.ccm.buf.b,
2083 &num, (ctr128_f)AES_ctr32_encrypt);
2084 } else {
2085 /* decrypt-then-mac */
2086 CRYPTO_ctr128_encrypt_ctr32(in, out, len + rem, &ctx->aes.key.k,
2087 ctx->aes.ccm.nonce.b, ctx->aes.ccm.buf.b,
2088 &num, (ctr128_f)AES_ctr32_encrypt);
2089
2090 if (len)
2091 s390x_kmac(out, len, ctx->aes.ccm.fc, &ctx->aes.ccm.kmac_param);
2092 if (rem) {
2093 for (i = 0; i < rem; i++)
2094 ctx->aes.ccm.kmac_param.icv.b[i] ^= out[len + i];
2095
2096 s390x_km(ctx->aes.ccm.kmac_param.icv.b, 16,
2097 ctx->aes.ccm.kmac_param.icv.b, ctx->aes.ccm.fc,
2098 ctx->aes.ccm.kmac_param.k);
2099 }
2100 }
2101 /* encrypt tag */
2102 for (i = 15 - l; i < 16; i++)
2103 ctx->aes.ccm.nonce.b[i] = 0;
2104
2105 s390x_km(ctx->aes.ccm.nonce.b, 16, ctx->aes.ccm.buf.b, ctx->aes.ccm.fc,
2106 ctx->aes.ccm.kmac_param.k);
2107 ctx->aes.ccm.kmac_param.icv.g[0] ^= ctx->aes.ccm.buf.g[0];
2108 ctx->aes.ccm.kmac_param.icv.g[1] ^= ctx->aes.ccm.buf.g[1];
2109
2110 ctx->aes.ccm.nonce.b[0] = flags; /* restore flags field */
2111 return 0;
2112}
2113
2114/*-
2115 * En/de-crypt and authenticate TLS packet. Returns the number of bytes written
2116 * if successful. Otherwise -1 is returned.
2117 */
2118static int s390x_aes_ccm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
2119 const unsigned char *in, size_t len)
2120{
2121 S390X_AES_CCM_CTX *cctx = EVP_C_DATA(S390X_AES_CCM_CTX, ctx);
2122 unsigned char *ivec = EVP_CIPHER_CTX_iv_noconst(ctx);
2123 unsigned char *buf = EVP_CIPHER_CTX_buf_noconst(ctx);
2124 const int enc = EVP_CIPHER_CTX_encrypting(ctx);
2125
2126 if (out != in
2127 || len < (EVP_CCM_TLS_EXPLICIT_IV_LEN + (size_t)cctx->aes.ccm.m))
2128 return -1;
2129
2130 if (enc) {
2131 /* Set explicit iv (sequence number). */
2132 memcpy(out, buf, EVP_CCM_TLS_EXPLICIT_IV_LEN);
2133 }
2134
2135 len -= EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->aes.ccm.m;
2136 /*-
2137 * Get explicit iv (sequence number). We already have fixed iv
2138 * (server/client_write_iv) here.
2139 */
2140 memcpy(ivec + EVP_CCM_TLS_FIXED_IV_LEN, in, EVP_CCM_TLS_EXPLICIT_IV_LEN);
2141 s390x_aes_ccm_setiv(cctx, ivec, len);
2142
2143 /* Process aad (sequence number|type|version|length) */
2144 s390x_aes_ccm_aad(cctx, buf, cctx->aes.ccm.tls_aad_len);
2145
2146 in += EVP_CCM_TLS_EXPLICIT_IV_LEN;
2147 out += EVP_CCM_TLS_EXPLICIT_IV_LEN;
96530eea 2148
39f5b069
PS		 2149 if (enc) {
2150 if (s390x_aes_ccm(cctx, in, out, len, enc))
2151 return -1;
2152
2153 memcpy(out + len, cctx->aes.ccm.kmac_param.icv.b, cctx->aes.ccm.m);
2154 return len + EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->aes.ccm.m;
2155 } else {
2156 if (!s390x_aes_ccm(cctx, in, out, len, enc)) {
2157 if (!CRYPTO_memcmp(cctx->aes.ccm.kmac_param.icv.b, in + len,
2158 cctx->aes.ccm.m))
2159 return len;
2160 }
2161
2162 OPENSSL_cleanse(out, len);
2163 return -1;
2164 }
2165}
2166
2167/*-
2168 * Set key and flag field and/or iv. Returns 1 if successful. Otherwise 0 is
2169 * returned.
2170 */
96530eea
PS		 2171static int s390x_aes_ccm_init_key(EVP_CIPHER_CTX *ctx,
2172 const unsigned char *key,
39f5b069
PS		 2173 const unsigned char *iv, int enc)
2174{
2175 S390X_AES_CCM_CTX *cctx = EVP_C_DATA(S390X_AES_CCM_CTX, ctx);
2176 unsigned char *ivec;
2177 int keylen;
2178
2179 if (iv == NULL && key == NULL)
2180 return 1;
2181
2182 if (key != NULL) {
2183 keylen = EVP_CIPHER_CTX_key_length(ctx);
8eb399fb 2184 cctx->aes.ccm.fc = S390X_AES_FC(keylen);
39f5b069
PS		 2185 memcpy(cctx->aes.ccm.kmac_param.k, key, keylen);
2186
2187 /* Store encoded m and l. */
2188 cctx->aes.ccm.nonce.b[0] = ((cctx->aes.ccm.l - 1) & 0x7)
2189 | (((cctx->aes.ccm.m - 2) >> 1) & 0x7) << 3;
2190 memset(cctx->aes.ccm.nonce.b + 1, 0,
2191 sizeof(cctx->aes.ccm.nonce.b));
2192 cctx->aes.ccm.blocks = 0;
2193
2194 cctx->aes.ccm.key_set = 1;
2195 }
2196
2197 if (iv != NULL) {
2198 ivec = EVP_CIPHER_CTX_iv_noconst(ctx);
2199 memcpy(ivec, iv, 15 - cctx->aes.ccm.l);
2200
2201 cctx->aes.ccm.iv_set = 1;
2202 }
2203
2204 return 1;
2205}
2206
2207/*-
2208 * Called from EVP layer to initialize context, process additional
2209 * authenticated data, en/de-crypt plain/cipher-text and authenticate
2210 * plaintext or process a TLS packet, depending on context. Returns bytes
2211 * written on success. Otherwise -1 is returned.
2212 */
96530eea 2213static int s390x_aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
39f5b069
PS		 2214 const unsigned char *in, size_t len)
2215{
2216 S390X_AES_CCM_CTX *cctx = EVP_C_DATA(S390X_AES_CCM_CTX, ctx);
2217 const int enc = EVP_CIPHER_CTX_encrypting(ctx);
2218 int rv;
2219 unsigned char *buf, *ivec;
2220
2221 if (!cctx->aes.ccm.key_set)
2222 return -1;
2223
2224 if (cctx->aes.ccm.tls_aad_len >= 0)
2225 return s390x_aes_ccm_tls_cipher(ctx, out, in, len);
2226
2227 /*-
2228 * Final(): Does not return any data. Recall that ccm is mac-then-encrypt
2229 * so integrity must be checked already at Update() i.e., before
2230 * potentially corrupted data is output.
2231 */
2232 if (in == NULL && out != NULL)
2233 return 0;
2234
2235 if (!cctx->aes.ccm.iv_set)
2236 return -1;
2237
2238 if (!enc && !cctx->aes.ccm.tag_set)
2239 return -1;
2240
2241 if (out == NULL) {
2242 /* Update(): Pass message length. */
2243 if (in == NULL) {
2244 ivec = EVP_CIPHER_CTX_iv_noconst(ctx);
2245 s390x_aes_ccm_setiv(cctx, ivec, len);
2246
2247 cctx->aes.ccm.len_set = 1;
2248 return len;
2249 }
2250
2251 /* Update(): Process aad. */
2252 if (!cctx->aes.ccm.len_set && len)
2253 return -1;
2254
2255 s390x_aes_ccm_aad(cctx, in, len);
2256 return len;
2257 }
2258
2259 /* Update(): Process message. */
2260
2261 if (!cctx->aes.ccm.len_set) {
2262 /*-
46d08509 2263 * In case message length was not previously set explicitly via
39f5b069
PS		 2264 * Update(), set it now.
2265 */
2266 ivec = EVP_CIPHER_CTX_iv_noconst(ctx);
2267 s390x_aes_ccm_setiv(cctx, ivec, len);
2268
2269 cctx->aes.ccm.len_set = 1;
2270 }
2271
2272 if (enc) {
2273 if (s390x_aes_ccm(cctx, in, out, len, enc))
2274 return -1;
2275
2276 cctx->aes.ccm.tag_set = 1;
2277 return len;
2278 } else {
2279 rv = -1;
2280
2281 if (!s390x_aes_ccm(cctx, in, out, len, enc)) {
2282 buf = EVP_CIPHER_CTX_buf_noconst(ctx);
2283 if (!CRYPTO_memcmp(cctx->aes.ccm.kmac_param.icv.b, buf,
2284 cctx->aes.ccm.m))
2285 rv = len;
2286 }
2287
2288 if (rv == -1)
2289 OPENSSL_cleanse(out, len);
2290
2291 cctx->aes.ccm.iv_set = 0;
2292 cctx->aes.ccm.tag_set = 0;
2293 cctx->aes.ccm.len_set = 0;
2294 return rv;
2295 }
2296}
2297
2298/*-
2299 * Performs various operations on the context structure depending on control
2300 * type. Returns 1 for success, 0 for failure and -1 for unknown control type.
2301 * Code is big-endian.
2302 */
2303static int s390x_aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
2304{
2305 S390X_AES_CCM_CTX *cctx = EVP_C_DATA(S390X_AES_CCM_CTX, c);
2306 unsigned char *buf, *iv;
2307 int enc, len;
2308
2309 switch (type) {
2310 case EVP_CTRL_INIT:
2311 cctx->aes.ccm.key_set = 0;
2312 cctx->aes.ccm.iv_set = 0;
2313 cctx->aes.ccm.l = 8;
2314 cctx->aes.ccm.m = 12;
2315 cctx->aes.ccm.tag_set = 0;
2316 cctx->aes.ccm.len_set = 0;
2317 cctx->aes.ccm.tls_aad_len = -1;
2318 return 1;
2319
2320 case EVP_CTRL_AEAD_TLS1_AAD:
2321 if (arg != EVP_AEAD_TLS1_AAD_LEN)
2322 return 0;
2323
2324 /* Save the aad for later use. */
2325 buf = EVP_CIPHER_CTX_buf_noconst(c);
2326 memcpy(buf, ptr, arg);
2327 cctx->aes.ccm.tls_aad_len = arg;
2328
03a5e5ae 2329 len = buf[arg - 2] << 8 | buf[arg - 1];
39f5b069
PS		 2330 if (len < EVP_CCM_TLS_EXPLICIT_IV_LEN)
2331 return 0;
2332
2333 /* Correct length for explicit iv. */
2334 len -= EVP_CCM_TLS_EXPLICIT_IV_LEN;
2335
2336 enc = EVP_CIPHER_CTX_encrypting(c);
2337 if (!enc) {
2338 if (len < cctx->aes.ccm.m)
2339 return 0;
2340
2341 /* Correct length for tag. */
2342 len -= cctx->aes.ccm.m;
2343 }
2344
03a5e5ae
PS		 2345 buf[arg - 2] = len >> 8;
2346 buf[arg - 1] = len & 0xff;
2347
39f5b069
PS		 2348 /* Extra padding: tag appended to record. */
2349 return cctx->aes.ccm.m;
2350
2351 case EVP_CTRL_CCM_SET_IV_FIXED:
2352 if (arg != EVP_CCM_TLS_FIXED_IV_LEN)
2353 return 0;
2354
2355 /* Copy to first part of the iv. */
2356 iv = EVP_CIPHER_CTX_iv_noconst(c);
2357 memcpy(iv, ptr, arg);
2358 return 1;
2359
2360 case EVP_CTRL_AEAD_SET_IVLEN:
2361 arg = 15 - arg;
2362 /* fall-through */
2363
2364 case EVP_CTRL_CCM_SET_L:
2365 if (arg < 2 || arg > 8)
2366 return 0;
2367
2368 cctx->aes.ccm.l = arg;
2369 return 1;
2370
2371 case EVP_CTRL_AEAD_SET_TAG:
2372 if ((arg & 1) || arg < 4 || arg > 16)
2373 return 0;
2374
2375 enc = EVP_CIPHER_CTX_encrypting(c);
2376 if (enc && ptr)
2377 return 0;
2378
2379 if (ptr) {
2380 cctx->aes.ccm.tag_set = 1;
2381 buf = EVP_CIPHER_CTX_buf_noconst(c);
2382 memcpy(buf, ptr, arg);
2383 }
2384
2385 cctx->aes.ccm.m = arg;
2386 return 1;
2387
2388 case EVP_CTRL_AEAD_GET_TAG:
2389 enc = EVP_CIPHER_CTX_encrypting(c);
2390 if (!enc || !cctx->aes.ccm.tag_set)
2391 return 0;
2392
2393 if(arg < cctx->aes.ccm.m)
2394 return 0;
2395
2396 memcpy(ptr, cctx->aes.ccm.kmac_param.icv.b, cctx->aes.ccm.m);
2397 cctx->aes.ccm.tag_set = 0;
2398 cctx->aes.ccm.iv_set = 0;
2399 cctx->aes.ccm.len_set = 0;
2400 return 1;
2401
2402 case EVP_CTRL_COPY:
2403 return 1;
2404
2405 default:
2406 return -1;
2407 }
2408}
2409
96530eea
PS		 2410# define s390x_aes_ccm_cleanup aes_ccm_cleanup
2411
2412# ifndef OPENSSL_NO_OCB
2413# define S390X_AES_OCB_CTX EVP_AES_OCB_CTX
2414# define S390X_aes_128_ocb_CAPABLE 0
2415# define S390X_aes_192_ocb_CAPABLE 0
2416# define S390X_aes_256_ocb_CAPABLE 0
2417
2418# define s390x_aes_ocb_init_key aes_ocb_init_key
2419static int s390x_aes_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
2420 const unsigned char *iv, int enc);
2421# define s390x_aes_ocb_cipher aes_ocb_cipher
2422static int s390x_aes_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
2423 const unsigned char *in, size_t len);
2424# define s390x_aes_ocb_cleanup aes_ocb_cleanup
2425static int s390x_aes_ocb_cleanup(EVP_CIPHER_CTX *);
2426# define s390x_aes_ocb_ctrl aes_ocb_ctrl
2427static int s390x_aes_ocb_ctrl(EVP_CIPHER_CTX *, int type, int arg, void *ptr);
2428# endif
2429
2430# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode, \
2431 MODE,flags) \
2432static const EVP_CIPHER s390x_aes_##keylen##_##mode = { \
2433 nid##_##keylen##_##nmode,blocksize, \
2434 keylen / 8, \
2435 ivlen, \
2436 flags | EVP_CIPH_##MODE##_MODE, \
55bd169f 2437 s390x_aes_##mode##_init_key, \
96530eea
PS		 2438 s390x_aes_##mode##_cipher, \
2439 NULL, \
55bd169f 2440 sizeof(S390X_AES_##MODE##_CTX), \
96530eea
PS		 2441 NULL, \
2442 NULL, \
2443 NULL, \
2444 NULL \
2445}; \
2446static const EVP_CIPHER aes_##keylen##_##mode = { \
2447 nid##_##keylen##_##nmode, \
2448 blocksize, \
2449 keylen / 8, \
2450 ivlen, \
2451 flags | EVP_CIPH_##MODE##_MODE, \
2452 aes_init_key, \
2453 aes_##mode##_cipher, \
2454 NULL, \
2455 sizeof(EVP_AES_KEY), \
55bd169f
PS		 2456 NULL, \
2457 NULL, \
2458 NULL, \
2459 NULL \
96530eea
PS		 2460}; \
2461const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
2462{ \
2463 return S390X_aes_##keylen##_##mode##_CAPABLE ? \
2464 &s390x_aes_##keylen##_##mode : &aes_##keylen##_##mode; \
2465}
2466
2467# define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags)\
2468static const EVP_CIPHER s390x_aes_##keylen##_##mode = { \
2469 nid##_##keylen##_##mode, \
2470 blocksize, \
2471 (EVP_CIPH_##MODE##_MODE == EVP_CIPH_XTS_MODE ? 2 : 1) * keylen / 8, \
2472 ivlen, \
2473 flags | EVP_CIPH_##MODE##_MODE, \
2474 s390x_aes_##mode##_init_key, \
2475 s390x_aes_##mode##_cipher, \
2476 s390x_aes_##mode##_cleanup, \
2477 sizeof(S390X_AES_##MODE##_CTX), \
2478 NULL, \
2479 NULL, \
2480 s390x_aes_##mode##_ctrl, \
2481 NULL \
2482}; \
2483static const EVP_CIPHER aes_##keylen##_##mode = { \
2484 nid##_##keylen##_##mode,blocksize, \
2485 (EVP_CIPH_##MODE##_MODE == EVP_CIPH_XTS_MODE ? 2 : 1) * keylen / 8, \
2486 ivlen, \
2487 flags | EVP_CIPH_##MODE##_MODE, \
2488 aes_##mode##_init_key, \
2489 aes_##mode##_cipher, \
2490 aes_##mode##_cleanup, \
2491 sizeof(EVP_AES_##MODE##_CTX), \
2492 NULL, \
2493 NULL, \
2494 aes_##mode##_ctrl, \
2495 NULL \
2496}; \
2497const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
2498{ \
2499 return S390X_aes_##keylen##_##mode##_CAPABLE ? \
2500 &s390x_aes_##keylen##_##mode : &aes_##keylen##_##mode; \
2501}
2502
5158c763 2503#else
17f121de 2504
5158c763 2505# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
17f121de 2506static const EVP_CIPHER aes_##keylen##_##mode = { \
0f113f3e
MC		 2507 nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
2508 flags|EVP_CIPH_##MODE##_MODE, \
2509 aes_init_key, \
2510 aes_##mode##_cipher, \
2511 NULL, \
2512 sizeof(EVP_AES_KEY), \
2513 NULL,NULL,NULL,NULL }; \
17f121de
AP		 2514const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
2515{ return &aes_##keylen##_##mode; }
d1fff483 2516
5158c763 2517# define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
17f121de 2518static const EVP_CIPHER aes_##keylen##_##mode = { \
0f113f3e 2519 nid##_##keylen##_##mode,blocksize, \
b1ceb439
TS		 2520 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE||EVP_CIPH_##MODE##_MODE==EVP_CIPH_SIV_MODE?2:1)*keylen/8, \
2521 ivlen, \
0f113f3e
MC		 2522 flags|EVP_CIPH_##MODE##_MODE, \
2523 aes_##mode##_init_key, \
2524 aes_##mode##_cipher, \
2525 aes_##mode##_cleanup, \
2526 sizeof(EVP_AES_##MODE##_CTX), \
2527 NULL,NULL,aes_##mode##_ctrl,NULL }; \
17f121de
AP		 2528const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
2529{ return &aes_##keylen##_##mode; }
9575d1a9 2530
5158c763 2531#endif
9575d1a9 2532
5158c763
MC		 2533#if defined(OPENSSL_CPUID_OBJ) && (defined(__arm__) || defined(__arm) || defined(__aarch64__))
2534# include "arm_arch.h"
2535# if __ARM_MAX_ARCH__>=7
2536# if defined(BSAES_ASM)
2537# define BSAES_CAPABLE (OPENSSL_armcap_P & ARMV7_NEON)
2538# endif
2539# if defined(VPAES_ASM)
2540# define VPAES_CAPABLE (OPENSSL_armcap_P & ARMV7_NEON)
0f113f3e 2541# endif
5158c763
MC		 2542# define HWAES_CAPABLE (OPENSSL_armcap_P & ARMV8_AES)
2543# define HWAES_set_encrypt_key aes_v8_set_encrypt_key
2544# define HWAES_set_decrypt_key aes_v8_set_decrypt_key
2545# define HWAES_encrypt aes_v8_encrypt
2546# define HWAES_decrypt aes_v8_decrypt
2547# define HWAES_cbc_encrypt aes_v8_cbc_encrypt
2548# define HWAES_ctr32_encrypt_blocks aes_v8_ctr32_encrypt_blocks
ddacb8f2 2549# endif
5158c763 2550#endif
d1fff483 2551
5158c763 2552#if defined(HWAES_CAPABLE)
ddacb8f2 2553int HWAES_set_encrypt_key(const unsigned char *userKey, const int bits,
0f113f3e 2554 AES_KEY *key);
ddacb8f2 2555int HWAES_set_decrypt_key(const unsigned char *userKey, const int bits,
0f113f3e 2556 AES_KEY *key);
ddacb8f2 2557void HWAES_encrypt(const unsigned char *in, unsigned char *out,
0f113f3e 2558 const AES_KEY *key);
ddacb8f2 2559void HWAES_decrypt(const unsigned char *in, unsigned char *out,
0f113f3e 2560 const AES_KEY *key);
ddacb8f2 2561void HWAES_cbc_encrypt(const unsigned char *in, unsigned char *out,
0f113f3e
MC		 2562 size_t length, const AES_KEY *key,
2563 unsigned char *ivec, const int enc);
ddacb8f2 2564void HWAES_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out,
0f113f3e
MC		 2565 size_t len, const AES_KEY *key,
2566 const unsigned char ivec[16]);
46f047d7
AP		 2567void HWAES_xts_encrypt(const unsigned char *inp, unsigned char *out,
2568 size_t len, const AES_KEY *key1,
2569 const AES_KEY *key2, const unsigned char iv[16]);
2570void HWAES_xts_decrypt(const unsigned char *inp, unsigned char *out,
2571 size_t len, const AES_KEY *key1,
2572 const AES_KEY *key2, const unsigned char iv[16]);
5158c763 2573#endif
ddacb8f2 2574
5158c763 2575#define BLOCK_CIPHER_generic_pack(nid,keylen,flags) \
0f113f3e
MC		 2576 BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
2577 BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
2578 BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
2579 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
2580 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags) \
2581 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags) \
2582 BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags)
d1fff483
AP		 2583
2584static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
0f113f3e
MC		 2585 const unsigned char *iv, int enc)
2586{
2587 int ret, mode;
6435f0f6 2588 EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
0f113f3e 2589
6435f0f6 2590 mode = EVP_CIPHER_CTX_mode(ctx);
0f113f3e 2591 if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
c01a3c6d 2592 && !enc) {
5158c763 2593#ifdef HWAES_CAPABLE
0f113f3e 2594 if (HWAES_CAPABLE) {
6435f0f6
RL		 2595 ret = HWAES_set_decrypt_key(key,
2596 EVP_CIPHER_CTX_key_length(ctx) * 8,
2597 &dat->ks.ks);
0f113f3e
MC		 2598 dat->block = (block128_f) HWAES_decrypt;
2599 dat->stream.cbc = NULL;
5158c763 2600# ifdef HWAES_cbc_encrypt
0f113f3e
MC		 2601 if (mode == EVP_CIPH_CBC_MODE)
2602 dat->stream.cbc = (cbc128_f) HWAES_cbc_encrypt;
0f113f3e 2603# endif
5158c763
MC		 2604 } else
2605#endif
2606#ifdef BSAES_CAPABLE
0f113f3e 2607 if (BSAES_CAPABLE && mode == EVP_CIPH_CBC_MODE) {
6435f0f6
RL		 2608 ret = AES_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
2609 &dat->ks.ks);
0f113f3e
MC		 2610 dat->block = (block128_f) AES_decrypt;
2611 dat->stream.cbc = (cbc128_f) bsaes_cbc_encrypt;
2612 } else
5158c763
MC		 2613#endif
2614#ifdef VPAES_CAPABLE
0f113f3e 2615 if (VPAES_CAPABLE) {
6435f0f6
RL		 2616 ret = vpaes_set_decrypt_key(key,
2617 EVP_CIPHER_CTX_key_length(ctx) * 8,
2618 &dat->ks.ks);
0f113f3e
MC		 2619 dat->block = (block128_f) vpaes_decrypt;
2620 dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
2621 (cbc128_f) vpaes_cbc_encrypt : NULL;
2622 } else
5158c763 2623#endif
0f113f3e 2624 {
6435f0f6
RL		 2625 ret = AES_set_decrypt_key(key,
2626 EVP_CIPHER_CTX_key_length(ctx) * 8,
2627 &dat->ks.ks);
0f113f3e
MC		 2628 dat->block = (block128_f) AES_decrypt;
2629 dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
2630 (cbc128_f) AES_cbc_encrypt : NULL;
c01a3c6d 2631 }
0f113f3e 2632 } else
5158c763 2633#ifdef HWAES_CAPABLE
0f113f3e 2634 if (HWAES_CAPABLE) {
6435f0f6
RL		 2635 ret = HWAES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
2636 &dat->ks.ks);
0f113f3e
MC		 2637 dat->block = (block128_f) HWAES_encrypt;
2638 dat->stream.cbc = NULL;
5158c763 2639# ifdef HWAES_cbc_encrypt
0f113f3e
MC		 2640 if (mode == EVP_CIPH_CBC_MODE)
2641 dat->stream.cbc = (cbc128_f) HWAES_cbc_encrypt;
2642 else
5158c763
MC		 2643# endif
2644# ifdef HWAES_ctr32_encrypt_blocks
0f113f3e
MC		 2645 if (mode == EVP_CIPH_CTR_MODE)
2646 dat->stream.ctr = (ctr128_f) HWAES_ctr32_encrypt_blocks;
2647 else
5158c763 2648# endif
0f113f3e
MC		 2649 (void)0; /* terminate potentially open 'else' */
2650 } else
5158c763
MC		 2651#endif
2652#ifdef BSAES_CAPABLE
0f113f3e 2653 if (BSAES_CAPABLE && mode == EVP_CIPH_CTR_MODE) {
6435f0f6
RL		 2654 ret = AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
2655 &dat->ks.ks);
0f113f3e
MC		 2656 dat->block = (block128_f) AES_encrypt;
2657 dat->stream.ctr = (ctr128_f) bsaes_ctr32_encrypt_blocks;
2658 } else
5158c763
MC		 2659#endif
2660#ifdef VPAES_CAPABLE
0f113f3e 2661 if (VPAES_CAPABLE) {
6435f0f6
RL		 2662 ret = vpaes_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
2663 &dat->ks.ks);
0f113f3e
MC		 2664 dat->block = (block128_f) vpaes_encrypt;
2665 dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
2666 (cbc128_f) vpaes_cbc_encrypt : NULL;
2667 } else
5158c763 2668#endif
0f113f3e 2669 {
6435f0f6
RL		 2670 ret = AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
2671 &dat->ks.ks);
0f113f3e
MC		 2672 dat->block = (block128_f) AES_encrypt;
2673 dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
2674 (cbc128_f) AES_cbc_encrypt : NULL;
5158c763 2675#ifdef AES_CTR_ASM
0f113f3e
MC		 2676 if (mode == EVP_CIPH_CTR_MODE)
2677 dat->stream.ctr = (ctr128_f) AES_ctr32_encrypt;
5158c763 2678#endif
0f113f3e 2679 }
d1fff483 2680
0f113f3e
MC		 2681 if (ret < 0) {
2682 EVPerr(EVP_F_AES_INIT_KEY, EVP_R_AES_KEY_SETUP_FAILED);
2683 return 0;
2684 }
d1fff483 2685
0f113f3e
MC		 2686 return 1;
2687}
d1fff483 2688
0f113f3e
MC		 2689static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
2690 const unsigned char *in, size_t len)
17f121de 2691{
6435f0f6 2692 EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
8ca28da0 2693
0f113f3e 2694 if (dat->stream.cbc)
6435f0f6
RL		 2695 (*dat->stream.cbc) (in, out, len, &dat->ks,
2696 EVP_CIPHER_CTX_iv_noconst(ctx),
2697 EVP_CIPHER_CTX_encrypting(ctx));
2698 else if (EVP_CIPHER_CTX_encrypting(ctx))
2699 CRYPTO_cbc128_encrypt(in, out, len, &dat->ks,
2700 EVP_CIPHER_CTX_iv_noconst(ctx), dat->block);
0f113f3e 2701 else
6435f0f6
RL		 2702 CRYPTO_cbc128_decrypt(in, out, len, &dat->ks,
2703 EVP_CIPHER_CTX_iv_noconst(ctx), dat->block);
17f121de 2704
0f113f3e 2705 return 1;
17f121de
AP		 2706}
2707
0f113f3e
MC		 2708static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
2709 const unsigned char *in, size_t len)
17f121de 2710{
6435f0f6 2711 size_t bl = EVP_CIPHER_CTX_block_size(ctx);
0f113f3e 2712 size_t i;
6435f0f6 2713 EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
17f121de 2714
0f113f3e
MC		 2715 if (len < bl)
2716 return 1;
17f121de 2717
0f113f3e
MC		 2718 for (i = 0, len -= bl; i <= len; i += bl)
2719 (*dat->block) (in + i, out + i, &dat->ks);
17f121de 2720
0f113f3e 2721 return 1;
17f121de 2722}
deb2c1a1 2723
0f113f3e
MC		 2724static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
2725 const unsigned char *in, size_t len)
17f121de 2726{
6435f0f6 2727 EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
8ca28da0 2728
6435f0f6 2729 int num = EVP_CIPHER_CTX_num(ctx);
0f113f3e 2730 CRYPTO_ofb128_encrypt(in, out, len, &dat->ks,
6435f0f6
RL		 2731 EVP_CIPHER_CTX_iv_noconst(ctx), &num, dat->block);
2732 EVP_CIPHER_CTX_set_num(ctx, num);
0f113f3e 2733 return 1;
17f121de 2734}
deb2c1a1 2735
0f113f3e
MC		 2736static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
2737 const unsigned char *in, size_t len)
17f121de 2738{
6435f0f6 2739 EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
8ca28da0 2740
6435f0f6 2741 int num = EVP_CIPHER_CTX_num(ctx);
0f113f3e 2742 CRYPTO_cfb128_encrypt(in, out, len, &dat->ks,
6435f0f6
RL		 2743 EVP_CIPHER_CTX_iv_noconst(ctx), &num,
2744 EVP_CIPHER_CTX_encrypting(ctx), dat->block);
2745 EVP_CIPHER_CTX_set_num(ctx, num);
0f113f3e 2746 return 1;
17f121de
AP		 2747}
2748
0f113f3e
MC		 2749static int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
2750 const unsigned char *in, size_t len)
17f121de 2751{
6435f0f6 2752 EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
8ca28da0 2753
6435f0f6 2754 int num = EVP_CIPHER_CTX_num(ctx);
0f113f3e 2755 CRYPTO_cfb128_8_encrypt(in, out, len, &dat->ks,
6435f0f6
RL		 2756 EVP_CIPHER_CTX_iv_noconst(ctx), &num,
2757 EVP_CIPHER_CTX_encrypting(ctx), dat->block);
2758 EVP_CIPHER_CTX_set_num(ctx, num);
0f113f3e 2759 return 1;
17f121de 2760}
8d1ebe0b 2761
0f113f3e
MC		 2762static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
2763 const unsigned char *in, size_t len)
17f121de 2764{
6435f0f6 2765 EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
0f113f3e 2766
6435f0f6
RL		 2767 if (EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS)) {
2768 int num = EVP_CIPHER_CTX_num(ctx);
0f113f3e 2769 CRYPTO_cfb128_1_encrypt(in, out, len, &dat->ks,
6435f0f6
RL		 2770 EVP_CIPHER_CTX_iv_noconst(ctx), &num,
2771 EVP_CIPHER_CTX_encrypting(ctx), dat->block);
2772 EVP_CIPHER_CTX_set_num(ctx, num);
0f113f3e
MC		 2773 return 1;
2774 }
2775
2776 while (len >= MAXBITCHUNK) {
6435f0f6 2777 int num = EVP_CIPHER_CTX_num(ctx);
0f113f3e 2778 CRYPTO_cfb128_1_encrypt(in, out, MAXBITCHUNK * 8, &dat->ks,
6435f0f6
RL		 2779 EVP_CIPHER_CTX_iv_noconst(ctx), &num,
2780 EVP_CIPHER_CTX_encrypting(ctx), dat->block);
2781 EVP_CIPHER_CTX_set_num(ctx, num);
0f113f3e 2782 len -= MAXBITCHUNK;
604e591e
BE		 2783 out += MAXBITCHUNK;
2784 in += MAXBITCHUNK;
0f113f3e 2785 }
6435f0f6
RL		 2786 if (len) {
2787 int num = EVP_CIPHER_CTX_num(ctx);
0f113f3e 2788 CRYPTO_cfb128_1_encrypt(in, out, len * 8, &dat->ks,
6435f0f6
RL		 2789 EVP_CIPHER_CTX_iv_noconst(ctx), &num,
2790 EVP_CIPHER_CTX_encrypting(ctx), dat->block);
2791 EVP_CIPHER_CTX_set_num(ctx, num);
2792 }
0f113f3e
MC		 2793
2794 return 1;
17f121de 2795}
8d1ebe0b 2796
0f113f3e
MC		 2797static int aes_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
2798 const unsigned char *in, size_t len)
d976f992 2799{
6435f0f6
RL		 2800 unsigned int num = EVP_CIPHER_CTX_num(ctx);
2801 EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
0f113f3e
MC		 2802
2803 if (dat->stream.ctr)
2804 CRYPTO_ctr128_encrypt_ctr32(in, out, len, &dat->ks,
6435f0f6
RL		 2805 EVP_CIPHER_CTX_iv_noconst(ctx),
2806 EVP_CIPHER_CTX_buf_noconst(ctx),
2807 &num, dat->stream.ctr);
0f113f3e
MC		 2808 else
2809 CRYPTO_ctr128_encrypt(in, out, len, &dat->ks,
6435f0f6
RL		 2810 EVP_CIPHER_CTX_iv_noconst(ctx),
2811 EVP_CIPHER_CTX_buf_noconst(ctx), &num,
2812 dat->block);
2813 EVP_CIPHER_CTX_set_num(ctx, num);
0f113f3e 2814 return 1;
d976f992
AP		 2815}
2816
0f113f3e
MC		 2817BLOCK_CIPHER_generic_pack(NID_aes, 128, 0)
2818 BLOCK_CIPHER_generic_pack(NID_aes, 192, 0)
2819 BLOCK_CIPHER_generic_pack(NID_aes, 256, 0)
bdaa5415
DSH		 2820
2821static int aes_gcm_cleanup(EVP_CIPHER_CTX *c)
0f113f3e 2822{
6435f0f6 2823 EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,c);
273a0218
BE		 2824 if (gctx == NULL)
2825 return 0;
0f113f3e 2826 OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm));
6435f0f6 2827 if (gctx->iv != EVP_CIPHER_CTX_iv_noconst(c))
0f113f3e
MC		 2828 OPENSSL_free(gctx->iv);
2829 return 1;
2830}
bdaa5415
DSH		 2831
2832static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
0f113f3e 2833{
6435f0f6 2834 EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,c);
0f113f3e
MC		 2835 switch (type) {
2836 case EVP_CTRL_INIT:
2837 gctx->key_set = 0;
2838 gctx->iv_set = 0;
c5307d9c
AP		 2839 gctx->ivlen = c->cipher->iv_len;
2840 gctx->iv = c->iv;
0f113f3e
MC		 2841 gctx->taglen = -1;
2842 gctx->iv_gen = 0;
2843 gctx->tls_aad_len = -1;
2844 return 1;
2845
e640fa02 2846 case EVP_CTRL_AEAD_SET_IVLEN:
0f113f3e
MC		 2847 if (arg <= 0)
2848 return 0;
2849 /* Allocate memory for IV if needed */
2850 if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen)) {
c5307d9c 2851 if (gctx->iv != c->iv)
0f113f3e 2852 OPENSSL_free(gctx->iv);
cdb10bae
RS		 2853 if ((gctx->iv = OPENSSL_malloc(arg)) == NULL) {
2854 EVPerr(EVP_F_AES_GCM_CTRL, ERR_R_MALLOC_FAILURE);
0f113f3e 2855 return 0;
cdb10bae 2856 }
0f113f3e
MC		 2857 }
2858 gctx->ivlen = arg;
2859 return 1;
2860
e640fa02 2861 case EVP_CTRL_AEAD_SET_TAG:
c5307d9c 2862 if (arg <= 0 || arg > 16 || c->encrypt)
0f113f3e 2863 return 0;
c5307d9c 2864 memcpy(c->buf, ptr, arg);
0f113f3e
MC		 2865 gctx->taglen = arg;
2866 return 1;
2867
e640fa02 2868 case EVP_CTRL_AEAD_GET_TAG:
c5307d9c 2869 if (arg <= 0 || arg > 16 || !c->encrypt
6435f0f6 2870 || gctx->taglen < 0)
0f113f3e 2871 return 0;
c5307d9c 2872 memcpy(ptr, c->buf, arg);
0f113f3e
MC		 2873 return 1;
2874
ecd1557f
BP		 2875 case EVP_CTRL_GET_IV:
2876 if (gctx->iv_gen != 1)
2877 return 0;
2878 if (gctx->ivlen != arg)
2879 return 0;
2880 memcpy(ptr, gctx->iv, arg);
2881 return 1;
2882
0f113f3e
MC		 2883 case EVP_CTRL_GCM_SET_IV_FIXED:
2884 /* Special case: -1 length restores whole IV */
2885 if (arg == -1) {
2886 memcpy(gctx->iv, ptr, gctx->ivlen);
2887 gctx->iv_gen = 1;
2888 return 1;
2889 }
2890 /*
2891 * Fixed field must be at least 4 bytes and invocation field at least
2892 * 8.
2893 */
2894 if ((arg < 4) || (gctx->ivlen - arg) < 8)
2895 return 0;
2896 if (arg)
2897 memcpy(gctx->iv, ptr, arg);
c5307d9c 2898 if (c->encrypt && RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0)
16cfc2c9 2899 return 0;
0f113f3e
MC		 2900 gctx->iv_gen = 1;
2901 return 1;
2902
2903 case EVP_CTRL_GCM_IV_GEN:
2904 if (gctx->iv_gen == 0 || gctx->key_set == 0)
2905 return 0;
2906 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
2907 if (arg <= 0 || arg > gctx->ivlen)
2908 arg = gctx->ivlen;
2909 memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
2910 /*
2911 * Invocation field will be at least 8 bytes in size and so no need
2912 * to check wrap around or increment more than last 8 bytes.
2913 */
2914 ctr64_inc(gctx->iv + gctx->ivlen - 8);
2915 gctx->iv_set = 1;
2916 return 1;
2917
2918 case EVP_CTRL_GCM_SET_IV_INV:
c5307d9c 2919 if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt)
0f113f3e
MC		 2920 return 0;
2921 memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
2922 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
2923 gctx->iv_set = 1;
2924 return 1;
2925
2926 case EVP_CTRL_AEAD_TLS1_AAD:
2927 /* Save the AAD for later use */
c8269881 2928 if (arg != EVP_AEAD_TLS1_AAD_LEN)
0f113f3e 2929 return 0;
c5307d9c 2930 memcpy(c->buf, ptr, arg);
0f113f3e 2931 gctx->tls_aad_len = arg;
d6b34570 2932 gctx->tls_enc_records = 0;
0f113f3e 2933 {
c5307d9c 2934 unsigned int len = c->buf[arg - 2] << 8 | c->buf[arg - 1];
0f113f3e 2935 /* Correct length for explicit IV */
2198b3a5
AP		 2936 if (len < EVP_GCM_TLS_EXPLICIT_IV_LEN)
2937 return 0;
0f113f3e
MC		 2938 len -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
2939 /* If decrypting correct for tag too */
c5307d9c 2940 if (!c->encrypt) {
2198b3a5
AP		 2941 if (len < EVP_GCM_TLS_TAG_LEN)
2942 return 0;
0f113f3e 2943 len -= EVP_GCM_TLS_TAG_LEN;
2198b3a5 2944 }
c5307d9c
AP		 2945 c->buf[arg - 2] = len >> 8;
2946 c->buf[arg - 1] = len & 0xff;
0f113f3e
MC		 2947 }
2948 /* Extra padding: tag appended to record */
2949 return EVP_GCM_TLS_TAG_LEN;
2950
2951 case EVP_CTRL_COPY:
2952 {
2953 EVP_CIPHER_CTX *out = ptr;
6435f0f6 2954 EVP_AES_GCM_CTX *gctx_out = EVP_C_DATA(EVP_AES_GCM_CTX,out);
0f113f3e
MC		 2955 if (gctx->gcm.key) {
2956 if (gctx->gcm.key != &gctx->ks)
2957 return 0;
2958 gctx_out->gcm.key = &gctx_out->ks;
2959 }
c5307d9c
AP		 2960 if (gctx->iv == c->iv)
2961 gctx_out->iv = out->iv;
0f113f3e 2962 else {
cdb10bae
RS		 2963 if ((gctx_out->iv = OPENSSL_malloc(gctx->ivlen)) == NULL) {
2964 EVPerr(EVP_F_AES_GCM_CTRL, ERR_R_MALLOC_FAILURE);
0f113f3e 2965 return 0;
cdb10bae 2966 }
0f113f3e
MC		 2967 memcpy(gctx_out->iv, gctx->iv, gctx->ivlen);
2968 }
2969 return 1;
2970 }
2971
2972 default:
2973 return -1;
2974
2975 }
2976}
bdaa5415
DSH		 2977
2978static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
0f113f3e
MC		 2979 const unsigned char *iv, int enc)
2980{
6435f0f6 2981 EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx);
0f113f3e
MC		 2982 if (!iv && !key)
2983 return 1;
2984 if (key) {
2985 do {
5158c763 2986#ifdef HWAES_CAPABLE
0f113f3e 2987 if (HWAES_CAPABLE) {
c5307d9c 2988 HWAES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks);
0f113f3e
MC		 2989 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
2990 (block128_f) HWAES_encrypt);
5158c763 2991# ifdef HWAES_ctr32_encrypt_blocks
0f113f3e 2992 gctx->ctr = (ctr128_f) HWAES_ctr32_encrypt_blocks;
5158c763 2993# else
0f113f3e 2994 gctx->ctr = NULL;
5158c763 2995# endif
0f113f3e
MC		 2996 break;
2997 } else
5158c763
MC		 2998#endif
2999#ifdef BSAES_CAPABLE
0f113f3e 3000 if (BSAES_CAPABLE) {
c5307d9c 3001 AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks);
0f113f3e
MC		 3002 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
3003 (block128_f) AES_encrypt);
3004 gctx->ctr = (ctr128_f) bsaes_ctr32_encrypt_blocks;
3005 break;
3006 } else
5158c763
MC		 3007#endif
3008#ifdef VPAES_CAPABLE
0f113f3e 3009 if (VPAES_CAPABLE) {
c5307d9c 3010 vpaes_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks);
0f113f3e
MC		 3011 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
3012 (block128_f) vpaes_encrypt);
3013 gctx->ctr = NULL;
3014 break;
3015 } else
5158c763 3016#endif
0f113f3e
MC		 3017 (void)0; /* terminate potentially open 'else' */
3018
c5307d9c 3019 AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks);
0f113f3e
MC		 3020 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
3021 (block128_f) AES_encrypt);
5158c763 3022#ifdef AES_CTR_ASM
0f113f3e 3023 gctx->ctr = (ctr128_f) AES_ctr32_encrypt;
5158c763 3024#else
0f113f3e 3025 gctx->ctr = NULL;
5158c763 3026#endif
0f113f3e
MC		 3027 } while (0);
3028
3029 /*
3030 * If we have an iv can set it directly, otherwise use saved IV.
3031 */
3032 if (iv == NULL && gctx->iv_set)
3033 iv = gctx->iv;
3034 if (iv) {
3035 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
3036 gctx->iv_set = 1;
3037 }
3038 gctx->key_set = 1;
3039 } else {
3040 /* If key set use IV, otherwise copy */
3041 if (gctx->key_set)
3042 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
3043 else
3044 memcpy(gctx->iv, iv, gctx->ivlen);
3045 gctx->iv_set = 1;
3046 gctx->iv_gen = 0;
3047 }
3048 return 1;
3049}
3050
3051/*
3052 * Handle TLS GCM packet format. This consists of the last portion of the IV
28dd49fa
DSH		 3053 * followed by the payload and finally the tag. On encrypt generate IV,
3054 * encrypt payload and write the tag. On verify retrieve IV, decrypt payload
3055 * and verify tag.
3056 */
3057
3058static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
0f113f3e
MC		 3059 const unsigned char *in, size_t len)
3060{
6435f0f6 3061 EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx);
0f113f3e
MC		 3062 int rv = -1;
3063 /* Encrypt/decrypt must be performed in place */
3064 if (out != in
3065 || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN))
3066 return -1;
d6b34570
P		 3067
3068 /*
3069 * Check for too many keys as per FIPS 140-2 IG A.5 "Key/IV Pair Uniqueness
3070 * Requirements from SP 800-38D". The requirements is for one party to the
3071 * communication to fail after 2^64 - 1 keys. We do this on the encrypting
3072 * side only.
3073 */
3074 if (ctx->encrypt && ++gctx->tls_enc_records == 0) {
3075 EVPerr(EVP_F_AES_GCM_TLS_CIPHER, EVP_R_TOO_MANY_RECORDS);
3076 goto err;
3077 }
3078
0f113f3e
MC		 3079 /*
3080 * Set IV from start of buffer or generate IV and write to start of
3081 * buffer.
3082 */
c5307d9c
AP		 3083 if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ? EVP_CTRL_GCM_IV_GEN
3084 : EVP_CTRL_GCM_SET_IV_INV,
0f113f3e
MC		 3085 EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
3086 goto err;
3087 /* Use saved AAD */
c5307d9c 3088 if (CRYPTO_gcm128_aad(&gctx->gcm, ctx->buf, gctx->tls_aad_len))
0f113f3e
MC		 3089 goto err;
3090 /* Fix buffer and length to point to payload */
3091 in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
3092 out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
3093 len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
c5307d9c 3094 if (ctx->encrypt) {
0f113f3e
MC		 3095 /* Encrypt payload */
3096 if (gctx->ctr) {
3097 size_t bulk = 0;
5158c763 3098#if defined(AES_GCM_ASM)
0f113f3e
MC		 3099 if (len >= 32 && AES_GCM_ASM(gctx)) {
3100 if (CRYPTO_gcm128_encrypt(&gctx->gcm, NULL, NULL, 0))
3101 return -1;
3102
3103 bulk = AES_gcm_encrypt(in, out, len,
3104 gctx->gcm.key,
3105 gctx->gcm.Yi.c, gctx->gcm.Xi.u);
3106 gctx->gcm.len.u[1] += bulk;
3107 }
5158c763 3108#endif
0f113f3e
MC		 3109 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
3110 in + bulk,
3111 out + bulk,
3112 len - bulk, gctx->ctr))
3113 goto err;
3114 } else {
3115 size_t bulk = 0;
5158c763 3116#if defined(AES_GCM_ASM2)
0f113f3e
MC		 3117 if (len >= 32 && AES_GCM_ASM2(gctx)) {
3118 if (CRYPTO_gcm128_encrypt(&gctx->gcm, NULL, NULL, 0))
3119 return -1;
3120
3121 bulk = AES_gcm_encrypt(in, out, len,
3122 gctx->gcm.key,
3123 gctx->gcm.Yi.c, gctx->gcm.Xi.u);
3124 gctx->gcm.len.u[1] += bulk;
3125 }
5158c763 3126#endif
0f113f3e
MC		 3127 if (CRYPTO_gcm128_encrypt(&gctx->gcm,
3128 in + bulk, out + bulk, len - bulk))
3129 goto err;
3130 }
3131 out += len;
3132 /* Finally write tag */
3133 CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN);
3134 rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
3135 } else {
3136 /* Decrypt */
3137 if (gctx->ctr) {
3138 size_t bulk = 0;
5158c763 3139#if defined(AES_GCM_ASM)
0f113f3e
MC		 3140 if (len >= 16 && AES_GCM_ASM(gctx)) {
3141 if (CRYPTO_gcm128_decrypt(&gctx->gcm, NULL, NULL, 0))
3142 return -1;
3143
3144 bulk = AES_gcm_decrypt(in, out, len,
3145 gctx->gcm.key,
3146 gctx->gcm.Yi.c, gctx->gcm.Xi.u);
3147 gctx->gcm.len.u[1] += bulk;
3148 }
5158c763 3149#endif
0f113f3e
MC		 3150 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
3151 in + bulk,
3152 out + bulk,
3153 len - bulk, gctx->ctr))
3154 goto err;
3155 } else {
3156 size_t bulk = 0;
5158c763 3157#if defined(AES_GCM_ASM2)
0f113f3e
MC		 3158 if (len >= 16 && AES_GCM_ASM2(gctx)) {
3159 if (CRYPTO_gcm128_decrypt(&gctx->gcm, NULL, NULL, 0))
3160 return -1;
3161
3162 bulk = AES_gcm_decrypt(in, out, len,
3163 gctx->gcm.key,
3164 gctx->gcm.Yi.c, gctx->gcm.Xi.u);
3165 gctx->gcm.len.u[1] += bulk;
3166 }
5158c763 3167#endif
0f113f3e
MC		 3168 if (CRYPTO_gcm128_decrypt(&gctx->gcm,
3169 in + bulk, out + bulk, len - bulk))
3170 goto err;
3171 }
3172 /* Retrieve tag */
c5307d9c 3173 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, EVP_GCM_TLS_TAG_LEN);
0f113f3e 3174 /* If tag mismatch wipe buffer */
c5307d9c 3175 if (CRYPTO_memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN)) {
0f113f3e
MC		 3176 OPENSSL_cleanse(out, len);
3177 goto err;
3178 }
3179 rv = len;
3180 }
3181
3182 err:
3183 gctx->iv_set = 0;
3184 gctx->tls_aad_len = -1;
3185 return rv;
3186}
28dd49fa 3187
17f121de 3188static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
0f113f3e
MC		 3189 const unsigned char *in, size_t len)
3190{
6435f0f6 3191 EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx);
0f113f3e
MC		 3192 /* If not set up, return error */
3193 if (!gctx->key_set)
3194 return -1;
3195
3196 if (gctx->tls_aad_len >= 0)
3197 return aes_gcm_tls_cipher(ctx, out, in, len);
3198
3199 if (!gctx->iv_set)
3200 return -1;
3201 if (in) {
3202 if (out == NULL) {
3203 if (CRYPTO_gcm128_aad(&gctx->gcm, in, len))
3204 return -1;
c5307d9c 3205 } else if (ctx->encrypt) {
0f113f3e
MC		 3206 if (gctx->ctr) {
3207 size_t bulk = 0;
5158c763 3208#if defined(AES_GCM_ASM)
0f113f3e
MC		 3209 if (len >= 32 && AES_GCM_ASM(gctx)) {
3210 size_t res = (16 - gctx->gcm.mres) % 16;
3211
3212 if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, res))
3213 return -1;
3214
3215 bulk = AES_gcm_encrypt(in + res,
3216 out + res, len - res,
3217 gctx->gcm.key, gctx->gcm.Yi.c,
3218 gctx->gcm.Xi.u);
3219 gctx->gcm.len.u[1] += bulk;
3220 bulk += res;
3221 }
5158c763 3222#endif
0f113f3e
MC		 3223 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
3224 in + bulk,
3225 out + bulk,
3226 len - bulk, gctx->ctr))
3227 return -1;
3228 } else {
3229 size_t bulk = 0;
5158c763 3230#if defined(AES_GCM_ASM2)
0f113f3e
MC		 3231 if (len >= 32 && AES_GCM_ASM2(gctx)) {
3232 size_t res = (16 - gctx->gcm.mres) % 16;
3233
3234 if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, res))
3235 return -1;
3236
3237 bulk = AES_gcm_encrypt(in + res,
3238 out + res, len - res,
3239 gctx->gcm.key, gctx->gcm.Yi.c,
3240 gctx->gcm.Xi.u);
3241 gctx->gcm.len.u[1] += bulk;
3242 bulk += res;
3243 }
5158c763 3244#endif
0f113f3e
MC		 3245 if (CRYPTO_gcm128_encrypt(&gctx->gcm,
3246 in + bulk, out + bulk, len - bulk))
3247 return -1;
3248 }
3249 } else {
3250 if (gctx->ctr) {
3251 size_t bulk = 0;
5158c763 3252#if defined(AES_GCM_ASM)
0f113f3e
MC		 3253 if (len >= 16 && AES_GCM_ASM(gctx)) {
3254 size_t res = (16 - gctx->gcm.mres) % 16;
3255
3256 if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, res))
3257 return -1;
3258
3259 bulk = AES_gcm_decrypt(in + res,
3260 out + res, len - res,
3261 gctx->gcm.key,
3262 gctx->gcm.Yi.c, gctx->gcm.Xi.u);
3263 gctx->gcm.len.u[1] += bulk;
3264 bulk += res;
3265 }
5158c763 3266#endif
0f113f3e
MC		 3267 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
3268 in + bulk,
3269 out + bulk,
3270 len - bulk, gctx->ctr))
3271 return -1;
3272 } else {
3273 size_t bulk = 0;
5158c763 3274#if defined(AES_GCM_ASM2)
0f113f3e
MC		 3275 if (len >= 16 && AES_GCM_ASM2(gctx)) {
3276 size_t res = (16 - gctx->gcm.mres) % 16;
3277
3278 if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, res))
3279 return -1;
3280
3281 bulk = AES_gcm_decrypt(in + res,
3282 out + res, len - res,
3283 gctx->gcm.key,
3284 gctx->gcm.Yi.c, gctx->gcm.Xi.u);
3285 gctx->gcm.len.u[1] += bulk;
3286 bulk += res;
3287 }
5158c763 3288#endif
0f113f3e
MC		 3289 if (CRYPTO_gcm128_decrypt(&gctx->gcm,
3290 in + bulk, out + bulk, len - bulk))
3291 return -1;
3292 }
3293 }
3294 return len;
3295 } else {
c5307d9c 3296 if (!ctx->encrypt) {
0f113f3e
MC		 3297 if (gctx->taglen < 0)
3298 return -1;
c5307d9c 3299 if (CRYPTO_gcm128_finish(&gctx->gcm, ctx->buf, gctx->taglen) != 0)
0f113f3e
MC		 3300 return -1;
3301 gctx->iv_set = 0;
3302 return 0;
3303 }
c5307d9c 3304 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16);
0f113f3e
MC		 3305 gctx->taglen = 16;
3306 /* Don't reuse the IV */
3307 gctx->iv_set = 0;
3308 return 0;
3309 }
3310
3311}
3312
5158c763 3313#define CUSTOM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \
0f113f3e
MC		 3314 | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
3315 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \
3316 | EVP_CIPH_CUSTOM_COPY)
3317
3318BLOCK_CIPHER_custom(NID_aes, 128, 1, 12, gcm, GCM,
3319 EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
3320 BLOCK_CIPHER_custom(NID_aes, 192, 1, 12, gcm, GCM,
3321 EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
3322 BLOCK_CIPHER_custom(NID_aes, 256, 1, 12, gcm, GCM,
3323 EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
32a2d8dd
DSH		 3324
3325static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
0f113f3e 3326{
6435f0f6 3327 EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,c);
0f113f3e
MC		 3328 if (type == EVP_CTRL_COPY) {
3329 EVP_CIPHER_CTX *out = ptr;
6435f0f6 3330 EVP_AES_XTS_CTX *xctx_out = EVP_C_DATA(EVP_AES_XTS_CTX,out);
0f113f3e
MC		 3331 if (xctx->xts.key1) {
3332 if (xctx->xts.key1 != &xctx->ks1)
3333 return 0;
3334 xctx_out->xts.key1 = &xctx_out->ks1;
3335 }
3336 if (xctx->xts.key2) {
3337 if (xctx->xts.key2 != &xctx->ks2)
3338 return 0;
3339 xctx_out->xts.key2 = &xctx_out->ks2;
3340 }
3341 return 1;
3342 } else if (type != EVP_CTRL_INIT)
3343 return -1;
3344 /* key1 and key2 are used as an indicator both key and IV are set */
3345 xctx->xts.key1 = NULL;
3346 xctx->xts.key2 = NULL;
3347 return 1;
3348}
32a2d8dd
DSH		 3349
3350static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
0f113f3e
MC		 3351 const unsigned char *iv, int enc)
3352{
6435f0f6 3353 EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,ctx);
0f113f3e
MC		 3354 if (!iv && !key)
3355 return 1;
3356
3357 if (key)
3358 do {
5158c763 3359#ifdef AES_XTS_ASM
0f113f3e 3360 xctx->stream = enc ? AES_xts_encrypt : AES_xts_decrypt;
5158c763 3361#else
0f113f3e 3362 xctx->stream = NULL;
5158c763 3363#endif
0f113f3e 3364 /* key_len is two AES keys */
5158c763 3365#ifdef HWAES_CAPABLE
0f113f3e
MC		 3366 if (HWAES_CAPABLE) {
3367 if (enc) {
6435f0f6
RL		 3368 HWAES_set_encrypt_key(key,
3369 EVP_CIPHER_CTX_key_length(ctx) * 4,
0f113f3e
MC		 3370 &xctx->ks1.ks);
3371 xctx->xts.block1 = (block128_f) HWAES_encrypt;
46f047d7
AP		 3372# ifdef HWAES_xts_encrypt
3373 xctx->stream = HWAES_xts_encrypt;
3374# endif
0f113f3e 3375 } else {
6435f0f6
RL		 3376 HWAES_set_decrypt_key(key,
3377 EVP_CIPHER_CTX_key_length(ctx) * 4,
0f113f3e
MC		 3378 &xctx->ks1.ks);
3379 xctx->xts.block1 = (block128_f) HWAES_decrypt;
46f047d7
AP		 3380# ifdef HWAES_xts_decrypt
3381 xctx->stream = HWAES_xts_decrypt;
3382#endif
0f113f3e
MC		 3383 }
3384
6435f0f6
RL		 3385 HWAES_set_encrypt_key(key + EVP_CIPHER_CTX_key_length(ctx) / 2,
3386 EVP_CIPHER_CTX_key_length(ctx) * 4,
3387 &xctx->ks2.ks);
0f113f3e
MC		 3388 xctx->xts.block2 = (block128_f) HWAES_encrypt;
3389
3390 xctx->xts.key1 = &xctx->ks1;
3391 break;
3392 } else
5158c763
MC		 3393#endif
3394#ifdef BSAES_CAPABLE
0f113f3e
MC		 3395 if (BSAES_CAPABLE)
3396 xctx->stream = enc ? bsaes_xts_encrypt : bsaes_xts_decrypt;
3397 else
5158c763
MC		 3398#endif
3399#ifdef VPAES_CAPABLE
0f113f3e
MC		 3400 if (VPAES_CAPABLE) {
3401 if (enc) {
6435f0f6
RL		 3402 vpaes_set_encrypt_key(key,
3403 EVP_CIPHER_CTX_key_length(ctx) * 4,
0f113f3e
MC		 3404 &xctx->ks1.ks);
3405 xctx->xts.block1 = (block128_f) vpaes_encrypt;
3406 } else {
6435f0f6
RL		 3407 vpaes_set_decrypt_key(key,
3408 EVP_CIPHER_CTX_key_length(ctx) * 4,
0f113f3e
MC		 3409 &xctx->ks1.ks);
3410 xctx->xts.block1 = (block128_f) vpaes_decrypt;
3411 }
3412
6435f0f6
RL		 3413 vpaes_set_encrypt_key(key + EVP_CIPHER_CTX_key_length(ctx) / 2,
3414 EVP_CIPHER_CTX_key_length(ctx) * 4,
3415 &xctx->ks2.ks);
0f113f3e
MC		 3416 xctx->xts.block2 = (block128_f) vpaes_encrypt;
3417
3418 xctx->xts.key1 = &xctx->ks1;
3419 break;
3420 } else
5158c763 3421#endif
0f113f3e
MC		 3422 (void)0; /* terminate potentially open 'else' */
3423
3424 if (enc) {
6435f0f6
RL		 3425 AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 4,
3426 &xctx->ks1.ks);
0f113f3e
MC		 3427 xctx->xts.block1 = (block128_f) AES_encrypt;
3428 } else {
6435f0f6
RL		 3429 AES_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 4,
3430 &xctx->ks1.ks);
0f113f3e
MC		 3431 xctx->xts.block1 = (block128_f) AES_decrypt;
3432 }
3433
6435f0f6
RL		 3434 AES_set_encrypt_key(key + EVP_CIPHER_CTX_key_length(ctx) / 2,
3435 EVP_CIPHER_CTX_key_length(ctx) * 4,
3436 &xctx->ks2.ks);
0f113f3e
MC		 3437 xctx->xts.block2 = (block128_f) AES_encrypt;
3438
3439 xctx->xts.key1 = &xctx->ks1;
3440 } while (0);
3441
3442 if (iv) {
3443 xctx->xts.key2 = &xctx->ks2;
6435f0f6 3444 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 16);
0f113f3e
MC		 3445 }
3446
3447 return 1;
3448}
32a2d8dd 3449
17f121de 3450static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
0f113f3e
MC		 3451 const unsigned char *in, size_t len)
3452{
6435f0f6 3453 EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,ctx);
95eda4f0
P		 3454
3455 if (xctx->xts.key1 == NULL
3456 || xctx->xts.key2 == NULL
3457 || out == NULL
3458 || in == NULL
3459 || len < AES_BLOCK_SIZE)
0f113f3e 3460 return 0;
95eda4f0
P		 3461
3462 /*
3463 * Verify that the two keys are different.
3464 *
3465 * This addresses the vulnerability described in Rogaway's September 2004
3466 * paper (http://web.cs.ucdavis.edu/~rogaway/papers/offsets.pdf):
3467 * "Efficient Instantiations of Tweakable Blockciphers and Refinements
3468 * to Modes OCB and PMAC".
3469 *
3470 * FIPS 140-2 IG A.9 XTS-AES Key Generation Requirements states that:
3471 * "The check for Key_1 != Key_2 shall be done at any place BEFORE
3472 * using the keys in the XTS-AES algorithm to process data with them."
3473 */
3474 if (CRYPTO_memcmp(xctx->xts.key1, xctx->xts.key2,
3475 EVP_CIPHER_CTX_key_length(ctx) / 2) == 0)
0f113f3e 3476 return 0;
95eda4f0 3477
0f113f3e
MC		 3478 if (xctx->stream)
3479 (*xctx->stream) (in, out, len,
6435f0f6
RL		 3480 xctx->xts.key1, xctx->xts.key2,
3481 EVP_CIPHER_CTX_iv_noconst(ctx));
3482 else if (CRYPTO_xts128_encrypt(&xctx->xts, EVP_CIPHER_CTX_iv_noconst(ctx),
3483 in, out, len,
3484 EVP_CIPHER_CTX_encrypting(ctx)))
0f113f3e
MC		 3485 return 0;
3486 return 1;
3487}
3488
5158c763 3489#define aes_xts_cleanup NULL
0f113f3e 3490
5158c763 3491#define XTS_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \
0f113f3e
MC		 3492 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \
3493 | EVP_CIPH_CUSTOM_COPY)
3494
3495BLOCK_CIPHER_custom(NID_aes, 128, 1, 16, xts, XTS, XTS_FLAGS)
3496 BLOCK_CIPHER_custom(NID_aes, 256, 1, 16, xts, XTS, XTS_FLAGS)
23916810
DSH		 3497
3498static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
0f113f3e 3499{
6435f0f6 3500 EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,c);
0f113f3e
MC		 3501 switch (type) {
3502 case EVP_CTRL_INIT:
3503 cctx->key_set = 0;
3504 cctx->iv_set = 0;
3505 cctx->L = 8;
3506 cctx->M = 12;
3507 cctx->tag_set = 0;
3508 cctx->len_set = 0;
e75c5a79
DSH		 3509 cctx->tls_aad_len = -1;
3510 return 1;
3511
3512 case EVP_CTRL_AEAD_TLS1_AAD:
3513 /* Save the AAD for later use */
3514 if (arg != EVP_AEAD_TLS1_AAD_LEN)
3515 return 0;
6435f0f6 3516 memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg);
e75c5a79
DSH		 3517 cctx->tls_aad_len = arg;
3518 {
6435f0f6
RL		 3519 uint16_t len =
3520 EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] << 8
3521 | EVP_CIPHER_CTX_buf_noconst(c)[arg - 1];
e75c5a79 3522 /* Correct length for explicit IV */
2198b3a5
AP		 3523 if (len < EVP_CCM_TLS_EXPLICIT_IV_LEN)
3524 return 0;
e75c5a79
DSH		 3525 len -= EVP_CCM_TLS_EXPLICIT_IV_LEN;
3526 /* If decrypting correct for tag too */
2198b3a5
AP		 3527 if (!EVP_CIPHER_CTX_encrypting(c)) {
3528 if (len < cctx->M)
3529 return 0;
e75c5a79 3530 len -= cctx->M;
2198b3a5 3531 }
6435f0f6
RL		 3532 EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] = len >> 8;
3533 EVP_CIPHER_CTX_buf_noconst(c)[arg - 1] = len & 0xff;
e75c5a79
DSH		 3534 }
3535 /* Extra padding: tag appended to record */
3536 return cctx->M;
3537
3538 case EVP_CTRL_CCM_SET_IV_FIXED:
3539 /* Sanity check length */
3540 if (arg != EVP_CCM_TLS_FIXED_IV_LEN)
3541 return 0;
3542 /* Just copy to first part of IV */
6435f0f6 3543 memcpy(EVP_CIPHER_CTX_iv_noconst(c), ptr, arg);
0f113f3e
MC		 3544 return 1;
3545
e640fa02 3546 case EVP_CTRL_AEAD_SET_IVLEN:
0f113f3e 3547 arg = 15 - arg;
018fcbec 3548 /* fall thru */
0f113f3e
MC		 3549 case EVP_CTRL_CCM_SET_L:
3550 if (arg < 2 || arg > 8)
3551 return 0;
3552 cctx->L = arg;
3553 return 1;
3554
e640fa02 3555 case EVP_CTRL_AEAD_SET_TAG:
0f113f3e
MC		 3556 if ((arg & 1) || arg < 4 || arg > 16)
3557 return 0;
6435f0f6 3558 if (EVP_CIPHER_CTX_encrypting(c) && ptr)
0f113f3e
MC		 3559 return 0;
3560 if (ptr) {
3561 cctx->tag_set = 1;
6435f0f6 3562 memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg);
0f113f3e
MC		 3563 }
3564 cctx->M = arg;
3565 return 1;
3566
e640fa02 3567 case EVP_CTRL_AEAD_GET_TAG:
6435f0f6 3568 if (!EVP_CIPHER_CTX_encrypting(c) || !cctx->tag_set)
0f113f3e
MC		 3569 return 0;
3570 if (!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg))
3571 return 0;
3572 cctx->tag_set = 0;
3573 cctx->iv_set = 0;
3574 cctx->len_set = 0;
3575 return 1;
3576
3577 case EVP_CTRL_COPY:
3578 {
3579 EVP_CIPHER_CTX *out = ptr;
6435f0f6 3580 EVP_AES_CCM_CTX *cctx_out = EVP_C_DATA(EVP_AES_CCM_CTX,out);
0f113f3e
MC		 3581 if (cctx->ccm.key) {
3582 if (cctx->ccm.key != &cctx->ks)
3583 return 0;
3584 cctx_out->ccm.key = &cctx_out->ks;
3585 }
3586 return 1;
3587 }
3588
3589 default:
3590 return -1;
3591
3592 }
3593}
23916810
DSH		 3594
3595static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
0f113f3e
MC		 3596 const unsigned char *iv, int enc)
3597{
6435f0f6 3598 EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx);
0f113f3e
MC		 3599 if (!iv && !key)
3600 return 1;
3601 if (key)
3602 do {
5158c763 3603#ifdef HWAES_CAPABLE
0f113f3e 3604 if (HWAES_CAPABLE) {
6435f0f6
RL		 3605 HWAES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
3606 &cctx->ks.ks);
0f113f3e
MC		 3607
3608 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
3609 &cctx->ks, (block128_f) HWAES_encrypt);
3610 cctx->str = NULL;
3611 cctx->key_set = 1;
3612 break;
3613 } else
5158c763
MC		 3614#endif
3615#ifdef VPAES_CAPABLE
0f113f3e 3616 if (VPAES_CAPABLE) {
6435f0f6
RL		 3617 vpaes_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
3618 &cctx->ks.ks);
0f113f3e
MC		 3619 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
3620 &cctx->ks, (block128_f) vpaes_encrypt);
3621 cctx->str = NULL;
3622 cctx->key_set = 1;
3623 break;
3624 }
5158c763 3625#endif
6435f0f6
RL		 3626 AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
3627 &cctx->ks.ks);
0f113f3e
MC		 3628 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
3629 &cctx->ks, (block128_f) AES_encrypt);
3630 cctx->str = NULL;
3631 cctx->key_set = 1;
3632 } while (0);
3633 if (iv) {
6435f0f6 3634 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 15 - cctx->L);
0f113f3e
MC		 3635 cctx->iv_set = 1;
3636 }
3637 return 1;
3638}
23916810 3639
e75c5a79
DSH		 3640static int aes_ccm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
3641 const unsigned char *in, size_t len)
3642{
6435f0f6 3643 EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx);
e75c5a79
DSH		 3644 CCM128_CONTEXT *ccm = &cctx->ccm;
3645 /* Encrypt/decrypt must be performed in place */
3646 if (out != in || len < (EVP_CCM_TLS_EXPLICIT_IV_LEN + (size_t)cctx->M))
3647 return -1;
3648 /* If encrypting set explicit IV from sequence number (start of AAD) */
6435f0f6
RL		 3649 if (EVP_CIPHER_CTX_encrypting(ctx))
3650 memcpy(out, EVP_CIPHER_CTX_buf_noconst(ctx),
3651 EVP_CCM_TLS_EXPLICIT_IV_LEN);
e75c5a79 3652 /* Get rest of IV from explicit IV */
6435f0f6
RL		 3653 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx) + EVP_CCM_TLS_FIXED_IV_LEN, in,
3654 EVP_CCM_TLS_EXPLICIT_IV_LEN);
e75c5a79
DSH		 3655 /* Correct length value */
3656 len -= EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->M;
6435f0f6
RL		 3657 if (CRYPTO_ccm128_setiv(ccm, EVP_CIPHER_CTX_iv_noconst(ctx), 15 - cctx->L,
3658 len))
e75c5a79
DSH		 3659 return -1;
3660 /* Use saved AAD */
6435f0f6 3661 CRYPTO_ccm128_aad(ccm, EVP_CIPHER_CTX_buf_noconst(ctx), cctx->tls_aad_len);
e75c5a79
DSH		 3662 /* Fix buffer to point to payload */
3663 in += EVP_CCM_TLS_EXPLICIT_IV_LEN;
3664 out += EVP_CCM_TLS_EXPLICIT_IV_LEN;
6435f0f6 3665 if (EVP_CIPHER_CTX_encrypting(ctx)) {
e75c5a79
DSH		 3666 if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len,
3667 cctx->str) :
3668 CRYPTO_ccm128_encrypt(ccm, in, out, len))
3669 return -1;
3670 if (!CRYPTO_ccm128_tag(ccm, out + len, cctx->M))
3671 return -1;
3672 return len + EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->M;
3673 } else {
3674 if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
3675 cctx->str) :
3676 !CRYPTO_ccm128_decrypt(ccm, in, out, len)) {
3677 unsigned char tag[16];
3678 if (CRYPTO_ccm128_tag(ccm, tag, cctx->M)) {
3679 if (!CRYPTO_memcmp(tag, in + len, cctx->M))
3680 return len;
3681 }
3682 }
3683 OPENSSL_cleanse(out, len);
3684 return -1;
3685 }
3686}
3687
17f121de 3688static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
0f113f3e
MC		 3689 const unsigned char *in, size_t len)
3690{
6435f0f6 3691 EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx);
0f113f3e
MC		 3692 CCM128_CONTEXT *ccm = &cctx->ccm;
3693 /* If not set up, return error */
e75c5a79
DSH		 3694 if (!cctx->key_set)
3695 return -1;
3696
3697 if (cctx->tls_aad_len >= 0)
3698 return aes_ccm_tls_cipher(ctx, out, in, len);
3699
197421b1
DSH		 3700 /* EVP_*Final() doesn't return any data */
3701 if (in == NULL && out != NULL)
3702 return 0;
3703
e75c5a79 3704 if (!cctx->iv_set)
0f113f3e 3705 return -1;
e75c5a79 3706
6435f0f6 3707 if (!EVP_CIPHER_CTX_encrypting(ctx) && !cctx->tag_set)
0f113f3e
MC		 3708 return -1;
3709 if (!out) {
3710 if (!in) {
6435f0f6
RL		 3711 if (CRYPTO_ccm128_setiv(ccm, EVP_CIPHER_CTX_iv_noconst(ctx),
3712 15 - cctx->L, len))
0f113f3e
MC		 3713 return -1;
3714 cctx->len_set = 1;
3715 return len;
3716 }
3717 /* If have AAD need message length */
3718 if (!cctx->len_set && len)
3719 return -1;
3720 CRYPTO_ccm128_aad(ccm, in, len);
3721 return len;
3722 }
0f113f3e
MC		 3723 /* If not set length yet do it */
3724 if (!cctx->len_set) {
6435f0f6
RL		 3725 if (CRYPTO_ccm128_setiv(ccm, EVP_CIPHER_CTX_iv_noconst(ctx),
3726 15 - cctx->L, len))
0f113f3e
MC		 3727 return -1;
3728 cctx->len_set = 1;
3729 }
6435f0f6 3730 if (EVP_CIPHER_CTX_encrypting(ctx)) {
0f113f3e
MC		 3731 if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len,
3732 cctx->str) :
3733 CRYPTO_ccm128_encrypt(ccm, in, out, len))
3734 return -1;
3735 cctx->tag_set = 1;
3736 return len;
3737 } else {
3738 int rv = -1;
3739 if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
3740 cctx->str) :
3741 !CRYPTO_ccm128_decrypt(ccm, in, out, len)) {
3742 unsigned char tag[16];
3743 if (CRYPTO_ccm128_tag(ccm, tag, cctx->M)) {
6435f0f6
RL		 3744 if (!CRYPTO_memcmp(tag, EVP_CIPHER_CTX_buf_noconst(ctx),
3745 cctx->M))
0f113f3e
MC		 3746 rv = len;
3747 }
3748 }
3749 if (rv == -1)
3750 OPENSSL_cleanse(out, len);
3751 cctx->iv_set = 0;
3752 cctx->tag_set = 0;
3753 cctx->len_set = 0;
3754 return rv;
3755 }
0f113f3e
MC		 3756}
3757
5158c763 3758#define aes_ccm_cleanup NULL
0f113f3e 3759
e75c5a79
DSH		 3760BLOCK_CIPHER_custom(NID_aes, 128, 1, 12, ccm, CCM,
3761 EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
3762 BLOCK_CIPHER_custom(NID_aes, 192, 1, 12, ccm, CCM,
3763 EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
3764 BLOCK_CIPHER_custom(NID_aes, 256, 1, 12, ccm, CCM,
3765 EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
0f113f3e
MC		 3766
3767typedef struct {
3768 union {
3769 double align;
3770 AES_KEY ks;
3771 } ks;
3772 /* Indicates if IV has been set */
3773 unsigned char *iv;
3774} EVP_AES_WRAP_CTX;
97cf1f6c
DSH		 3775
3776static int aes_wrap_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
0f113f3e
MC		 3777 const unsigned char *iv, int enc)
3778{
6435f0f6 3779 EVP_AES_WRAP_CTX *wctx = EVP_C_DATA(EVP_AES_WRAP_CTX,ctx);
0f113f3e
MC		 3780 if (!iv && !key)
3781 return 1;
3782 if (key) {
6435f0f6
RL		 3783 if (EVP_CIPHER_CTX_encrypting(ctx))
3784 AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
3785 &wctx->ks.ks);
0f113f3e 3786 else
6435f0f6
RL		 3787 AES_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
3788 &wctx->ks.ks);
0f113f3e
MC		 3789 if (!iv)
3790 wctx->iv = NULL;
3791 }
3792 if (iv) {
6435f0f6
RL		 3793 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, EVP_CIPHER_CTX_iv_length(ctx));
3794 wctx->iv = EVP_CIPHER_CTX_iv_noconst(ctx);
0f113f3e
MC		 3795 }
3796 return 1;
3797}
97cf1f6c
DSH		 3798
3799static int aes_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
0f113f3e
MC		 3800 const unsigned char *in, size_t inlen)
3801{
6435f0f6 3802 EVP_AES_WRAP_CTX *wctx = EVP_C_DATA(EVP_AES_WRAP_CTX,ctx);
0f113f3e
MC		 3803 size_t rv;
3804 /* AES wrap with padding has IV length of 4, without padding 8 */
3805 int pad = EVP_CIPHER_CTX_iv_length(ctx) == 4;
3806 /* No final operation so always return zero length */
3807 if (!in)
3808 return 0;
3809 /* Input length must always be non-zero */
3810 if (!inlen)
3811 return -1;
3812 /* If decrypting need at least 16 bytes and multiple of 8 */
6435f0f6 3813 if (!EVP_CIPHER_CTX_encrypting(ctx) && (inlen < 16 || inlen & 0x7))
0f113f3e
MC		 3814 return -1;
3815 /* If not padding input must be multiple of 8 */
3816 if (!pad && inlen & 0x7)
3817 return -1;
7141ba31
MC		 3818 if (is_partially_overlapping(out, in, inlen)) {
3819 EVPerr(EVP_F_AES_WRAP_CIPHER, EVP_R_PARTIALLY_OVERLAPPING);
3820 return 0;
3821 }
0f113f3e 3822 if (!out) {
6435f0f6 3823 if (EVP_CIPHER_CTX_encrypting(ctx)) {
0f113f3e
MC		 3824 /* If padding round up to multiple of 8 */
3825 if (pad)
3826 inlen = (inlen + 7) / 8 * 8;
3827 /* 8 byte prefix */
3828 return inlen + 8;
3829 } else {
3830 /*
3831 * If not padding output will be exactly 8 bytes smaller than
3832 * input. If padding it will be at least 8 bytes smaller but we
3833 * don't know how much.
3834 */
3835 return inlen - 8;
3836 }
3837 }
3838 if (pad) {
6435f0f6 3839 if (EVP_CIPHER_CTX_encrypting(ctx))
0f113f3e
MC		 3840 rv = CRYPTO_128_wrap_pad(&wctx->ks.ks, wctx->iv,
3841 out, in, inlen,
3842 (block128_f) AES_encrypt);
3843 else
3844 rv = CRYPTO_128_unwrap_pad(&wctx->ks.ks, wctx->iv,
3845 out, in, inlen,
3846 (block128_f) AES_decrypt);
3847 } else {
6435f0f6 3848 if (EVP_CIPHER_CTX_encrypting(ctx))
0f113f3e
MC		 3849 rv = CRYPTO_128_wrap(&wctx->ks.ks, wctx->iv,
3850 out, in, inlen, (block128_f) AES_encrypt);
3851 else
3852 rv = CRYPTO_128_unwrap(&wctx->ks.ks, wctx->iv,
3853 out, in, inlen, (block128_f) AES_decrypt);
3854 }
3855 return rv ? (int)rv : -1;
3856}
3857
5158c763 3858#define WRAP_FLAGS (EVP_CIPH_WRAP_MODE \
0f113f3e
MC		 3859 | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
3860 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_FLAG_DEFAULT_ASN1)
97cf1f6c
DSH		 3861
3862static const EVP_CIPHER aes_128_wrap = {
0f113f3e
MC		 3863 NID_id_aes128_wrap,
3864 8, 16, 8, WRAP_FLAGS,
3865 aes_wrap_init_key, aes_wrap_cipher,
3866 NULL,
3867 sizeof(EVP_AES_WRAP_CTX),
3868 NULL, NULL, NULL, NULL
3869};
97cf1f6c
DSH		 3870
3871const EVP_CIPHER *EVP_aes_128_wrap(void)
0f113f3e
MC		 3872{
3873 return &aes_128_wrap;
3874}
97cf1f6c
DSH		 3875
3876static const EVP_CIPHER aes_192_wrap = {
0f113f3e
MC		 3877 NID_id_aes192_wrap,
3878 8, 24, 8, WRAP_FLAGS,
3879 aes_wrap_init_key, aes_wrap_cipher,
3880 NULL,
3881 sizeof(EVP_AES_WRAP_CTX),
3882 NULL, NULL, NULL, NULL
3883};
97cf1f6c
DSH		 3884
3885const EVP_CIPHER *EVP_aes_192_wrap(void)
0f113f3e
MC		 3886{
3887 return &aes_192_wrap;
3888}
97cf1f6c
DSH		 3889
3890static const EVP_CIPHER aes_256_wrap = {
0f113f3e
MC		 3891 NID_id_aes256_wrap,
3892 8, 32, 8, WRAP_FLAGS,
3893 aes_wrap_init_key, aes_wrap_cipher,
3894 NULL,
3895 sizeof(EVP_AES_WRAP_CTX),
3896 NULL, NULL, NULL, NULL
3897};
97cf1f6c
DSH		 3898
3899const EVP_CIPHER *EVP_aes_256_wrap(void)
0f113f3e
MC		 3900{
3901 return &aes_256_wrap;
3902}
97cf1f6c 3903
d31fed73 3904static const EVP_CIPHER aes_128_wrap_pad = {
0f113f3e
MC		 3905 NID_id_aes128_wrap_pad,
3906 8, 16, 4, WRAP_FLAGS,
3907 aes_wrap_init_key, aes_wrap_cipher,
3908 NULL,
3909 sizeof(EVP_AES_WRAP_CTX),
3910 NULL, NULL, NULL, NULL
3911};
d31fed73
DSH		 3912
3913const EVP_CIPHER *EVP_aes_128_wrap_pad(void)
0f113f3e
MC		 3914{
3915 return &aes_128_wrap_pad;
3916}
d31fed73
DSH		 3917
3918static const EVP_CIPHER aes_192_wrap_pad = {
0f113f3e
MC		 3919 NID_id_aes192_wrap_pad,
3920 8, 24, 4, WRAP_FLAGS,
3921 aes_wrap_init_key, aes_wrap_cipher,
3922 NULL,
3923 sizeof(EVP_AES_WRAP_CTX),
3924 NULL, NULL, NULL, NULL
3925};
d31fed73
DSH		 3926
3927const EVP_CIPHER *EVP_aes_192_wrap_pad(void)
0f113f3e
MC		 3928{
3929 return &aes_192_wrap_pad;
3930}
d31fed73
DSH		 3931
3932static const EVP_CIPHER aes_256_wrap_pad = {
0f113f3e
MC		 3933 NID_id_aes256_wrap_pad,
3934 8, 32, 4, WRAP_FLAGS,
3935 aes_wrap_init_key, aes_wrap_cipher,
3936 NULL,
3937 sizeof(EVP_AES_WRAP_CTX),
3938 NULL, NULL, NULL, NULL
3939};
d31fed73
DSH		 3940
3941const EVP_CIPHER *EVP_aes_256_wrap_pad(void)
0f113f3e
MC		 3942{
3943 return &aes_256_wrap_pad;
3944}
d31fed73 3945
5158c763 3946#ifndef OPENSSL_NO_OCB
e6b336ef 3947static int aes_ocb_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
0f113f3e 3948{
6435f0f6 3949 EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,c);
0f113f3e
MC		 3950 EVP_CIPHER_CTX *newc;
3951 EVP_AES_OCB_CTX *new_octx;
3952
3953 switch (type) {
3954 case EVP_CTRL_INIT:
3955 octx->key_set = 0;
3956 octx->iv_set = 0;
6435f0f6
RL		 3957 octx->ivlen = EVP_CIPHER_CTX_iv_length(c);
3958 octx->iv = EVP_CIPHER_CTX_iv_noconst(c);
0f113f3e
MC		 3959 octx->taglen = 16;
3960 octx->data_buf_len = 0;
3961 octx->aad_buf_len = 0;
3962 return 1;
3963
e640fa02 3964 case EVP_CTRL_AEAD_SET_IVLEN:
0f113f3e
MC		 3965 /* IV len must be 1 to 15 */
3966 if (arg <= 0 || arg > 15)
3967 return 0;
3968
3969 octx->ivlen = arg;
3970 return 1;
3971
e640fa02 3972 case EVP_CTRL_AEAD_SET_TAG:
d57d135c
MC		 3973 if (!ptr) {
3974 /* Tag len must be 0 to 16 */
3975 if (arg < 0 || arg > 16)
3976 return 0;
3977
3978 octx->taglen = arg;
3979 return 1;
3980 }
6435f0f6 3981 if (arg != octx->taglen || EVP_CIPHER_CTX_encrypting(c))
0f113f3e
MC		 3982 return 0;
3983 memcpy(octx->tag, ptr, arg);
3984 return 1;
3985
e640fa02 3986 case EVP_CTRL_AEAD_GET_TAG:
6435f0f6 3987 if (arg != octx->taglen || !EVP_CIPHER_CTX_encrypting(c))
0f113f3e
MC		 3988 return 0;
3989
3990 memcpy(ptr, octx->tag, arg);
3991 return 1;
3992
3993 case EVP_CTRL_COPY:
3994 newc = (EVP_CIPHER_CTX *)ptr;
6435f0f6 3995 new_octx = EVP_C_DATA(EVP_AES_OCB_CTX,newc);
0f113f3e 3996 return CRYPTO_ocb128_copy_ctx(&new_octx->ocb, &octx->ocb,
bdc985b1
AP		 3997 &new_octx->ksenc.ks,
3998 &new_octx->ksdec.ks);
0f113f3e
MC		 3999
4000 default:
4001 return -1;
4002
4003 }
4004}
e6b336ef 4005
5158c763
MC		 4006# ifdef HWAES_CAPABLE
4007# ifdef HWAES_ocb_encrypt
02dc0b82
AP		 4008void HWAES_ocb_encrypt(const unsigned char *in, unsigned char *out,
4009 size_t blocks, const void *key,
4010 size_t start_block_num,
4011 unsigned char offset_i[16],
4012 const unsigned char L_[][16],
4013 unsigned char checksum[16]);
5158c763 4014# else
365f95ad 4015# define HWAES_ocb_encrypt ((ocb128_f)NULL)
5158c763
MC		 4016# endif
4017# ifdef HWAES_ocb_decrypt
02dc0b82
AP		 4018void HWAES_ocb_decrypt(const unsigned char *in, unsigned char *out,
4019 size_t blocks, const void *key,
4020 size_t start_block_num,
4021 unsigned char offset_i[16],
4022 const unsigned char L_[][16],
4023 unsigned char checksum[16]);
5158c763 4024# else
365f95ad 4025# define HWAES_ocb_decrypt ((ocb128_f)NULL)
02dc0b82 4026# endif
5158c763 4027# endif
02dc0b82 4028
e6b336ef 4029static int aes_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
0f113f3e
MC		 4030 const unsigned char *iv, int enc)
4031{
6435f0f6 4032 EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,ctx);
0f113f3e
MC		 4033 if (!iv && !key)
4034 return 1;
4035 if (key) {
4036 do {
4037 /*
4038 * We set both the encrypt and decrypt key here because decrypt
4039 * needs both. We could possibly optimise to remove setting the
4040 * decrypt for an encryption operation.
4041 */
5158c763 4042# ifdef HWAES_CAPABLE
02dc0b82 4043 if (HWAES_CAPABLE) {
6435f0f6
RL		 4044 HWAES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
4045 &octx->ksenc.ks);
4046 HWAES_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
4047 &octx->ksdec.ks);
02dc0b82
AP		 4048 if (!CRYPTO_ocb128_init(&octx->ocb,
4049 &octx->ksenc.ks, &octx->ksdec.ks,
4050 (block128_f) HWAES_encrypt,
4051 (block128_f) HWAES_decrypt,
4052 enc ? HWAES_ocb_encrypt
4053 : HWAES_ocb_decrypt))
4054 return 0;
4055 break;
4056 }
5158c763
MC		 4057# endif
4058# ifdef VPAES_CAPABLE
0f113f3e 4059 if (VPAES_CAPABLE) {
6435f0f6
RL		 4060 vpaes_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
4061 &octx->ksenc.ks);
4062 vpaes_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
4063 &octx->ksdec.ks);
bdc985b1
AP		 4064 if (!CRYPTO_ocb128_init(&octx->ocb,
4065 &octx->ksenc.ks, &octx->ksdec.ks,
4066 (block128_f) vpaes_encrypt,
bd30091c
AP		 4067 (block128_f) vpaes_decrypt,
4068 NULL))
0f113f3e
MC		 4069 return 0;
4070 break;
4071 }
5158c763 4072# endif
6435f0f6
RL		 4073 AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
4074 &octx->ksenc.ks);
4075 AES_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
4076 &octx->ksdec.ks);
bdc985b1
AP		 4077 if (!CRYPTO_ocb128_init(&octx->ocb,
4078 &octx->ksenc.ks, &octx->ksdec.ks,
0f113f3e 4079 (block128_f) AES_encrypt,
bd30091c
AP		 4080 (block128_f) AES_decrypt,
4081 NULL))
0f113f3e
MC		 4082 return 0;
4083 }
4084 while (0);
4085
4086 /*
4087 * If we have an iv we can set it directly, otherwise use saved IV.
4088 */
4089 if (iv == NULL && octx->iv_set)
4090 iv = octx->iv;
4091 if (iv) {
4092 if (CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen)
4093 != 1)
4094 return 0;
4095 octx->iv_set = 1;
4096 }
4097 octx->key_set = 1;
4098 } else {
4099 /* If key set use IV, otherwise copy */
4100 if (octx->key_set)
4101 CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen);
4102 else
4103 memcpy(octx->iv, iv, octx->ivlen);
4104 octx->iv_set = 1;
4105 }
4106 return 1;
4107}
e6b336ef
MC		 4108
4109static int aes_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
0f113f3e
MC		 4110 const unsigned char *in, size_t len)
4111{
4112 unsigned char *buf;
4113 int *buf_len;
4114 int written_len = 0;
4115 size_t trailing_len;
6435f0f6 4116 EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,ctx);
0f113f3e
MC		 4117
4118 /* If IV or Key not set then return error */
4119 if (!octx->iv_set)
4120 return -1;
4121
4122 if (!octx->key_set)
4123 return -1;
4124
0ba5a9ea 4125 if (in != NULL) {
0f113f3e
MC		 4126 /*
4127 * Need to ensure we are only passing full blocks to low level OCB
4128 * routines. We do it here rather than in EVP_EncryptUpdate/
4129 * EVP_DecryptUpdate because we need to pass full blocks of AAD too
4130 * and those routines don't support that
4131 */
4132
4133 /* Are we dealing with AAD or normal data here? */
4134 if (out == NULL) {
4135 buf = octx->aad_buf;
4136 buf_len = &(octx->aad_buf_len);
4137 } else {
4138 buf = octx->data_buf;
4139 buf_len = &(octx->data_buf_len);
7141ba31
MC		 4140
4141 if (is_partially_overlapping(out + *buf_len, in, len)) {
4142 EVPerr(EVP_F_AES_OCB_CIPHER, EVP_R_PARTIALLY_OVERLAPPING);
4143 return 0;
4144 }
0f113f3e
MC		 4145 }
4146
4147 /*
4148 * If we've got a partially filled buffer from a previous call then
4149 * use that data first
4150 */
0ba5a9ea 4151 if (*buf_len > 0) {
0f113f3e
MC		 4152 unsigned int remaining;
4153
0ba5a9ea 4154 remaining = AES_BLOCK_SIZE - (*buf_len);
0f113f3e
MC		 4155 if (remaining > len) {
4156 memcpy(buf + (*buf_len), in, len);
4157 *(buf_len) += len;
4158 return 0;
4159 }
4160 memcpy(buf + (*buf_len), in, remaining);
4161
4162 /*
4163 * If we get here we've filled the buffer, so process it
4164 */
4165 len -= remaining;
4166 in += remaining;
4167 if (out == NULL) {
0ba5a9ea 4168 if (!CRYPTO_ocb128_aad(&octx->ocb, buf, AES_BLOCK_SIZE))
0f113f3e 4169 return -1;
6435f0f6 4170 } else if (EVP_CIPHER_CTX_encrypting(ctx)) {
0ba5a9ea
MC		 4171 if (!CRYPTO_ocb128_encrypt(&octx->ocb, buf, out,
4172 AES_BLOCK_SIZE))
0f113f3e
MC		 4173 return -1;
4174 } else {
0ba5a9ea
MC		 4175 if (!CRYPTO_ocb128_decrypt(&octx->ocb, buf, out,
4176 AES_BLOCK_SIZE))
0f113f3e
MC		 4177 return -1;
4178 }
0ba5a9ea 4179 written_len = AES_BLOCK_SIZE;
0f113f3e 4180 *buf_len = 0;
7c12c7b6
MC		 4181 if (out != NULL)
4182 out += AES_BLOCK_SIZE;
0f113f3e
MC		 4183 }
4184
4185 /* Do we have a partial block to handle at the end? */
0ba5a9ea 4186 trailing_len = len % AES_BLOCK_SIZE;
0f113f3e
MC		 4187
4188 /*
4189 * If we've got some full blocks to handle, then process these first
4190 */
4191 if (len != trailing_len) {
4192 if (out == NULL) {
4193 if (!CRYPTO_ocb128_aad(&octx->ocb, in, len - trailing_len))
4194 return -1;
6435f0f6 4195 } else if (EVP_CIPHER_CTX_encrypting(ctx)) {
0f113f3e
MC		 4196 if (!CRYPTO_ocb128_encrypt
4197 (&octx->ocb, in, out, len - trailing_len))
4198 return -1;
4199 } else {
4200 if (!CRYPTO_ocb128_decrypt
4201 (&octx->ocb, in, out, len - trailing_len))
4202 return -1;
4203 }
4204 written_len += len - trailing_len;
4205 in += len - trailing_len;
4206 }
4207
4208 /* Handle any trailing partial block */
0ba5a9ea 4209 if (trailing_len > 0) {
0f113f3e
MC		 4210 memcpy(buf, in, trailing_len);
4211 *buf_len = trailing_len;
4212 }
4213
4214 return written_len;
4215 } else {
4216 /*
4217 * First of all empty the buffer of any partial block that we might
4218 * have been provided - both for data and AAD
4219 */
0ba5a9ea 4220 if (octx->data_buf_len > 0) {
6435f0f6 4221 if (EVP_CIPHER_CTX_encrypting(ctx)) {
0f113f3e
MC		 4222 if (!CRYPTO_ocb128_encrypt(&octx->ocb, octx->data_buf, out,
4223 octx->data_buf_len))
4224 return -1;
4225 } else {
4226 if (!CRYPTO_ocb128_decrypt(&octx->ocb, octx->data_buf, out,
4227 octx->data_buf_len))
4228 return -1;
4229 }
4230 written_len = octx->data_buf_len;
4231 octx->data_buf_len = 0;
4232 }
0ba5a9ea 4233 if (octx->aad_buf_len > 0) {
0f113f3e
MC		 4234 if (!CRYPTO_ocb128_aad
4235 (&octx->ocb, octx->aad_buf, octx->aad_buf_len))
4236 return -1;
4237 octx->aad_buf_len = 0;
4238 }
4239 /* If decrypting then verify */
6435f0f6 4240 if (!EVP_CIPHER_CTX_encrypting(ctx)) {
0f113f3e
MC		 4241 if (octx->taglen < 0)
4242 return -1;
4243 if (CRYPTO_ocb128_finish(&octx->ocb,
4244 octx->tag, octx->taglen) != 0)
4245 return -1;
4246 octx->iv_set = 0;
4247 return written_len;
4248 }
4249 /* If encrypting then just get the tag */
4250 if (CRYPTO_ocb128_tag(&octx->ocb, octx->tag, 16) != 1)
4251 return -1;
4252 /* Don't reuse the IV */
4253 octx->iv_set = 0;
4254 return written_len;
4255 }
4256}
e6b336ef
MC		 4257
4258static int aes_ocb_cleanup(EVP_CIPHER_CTX *c)
0f113f3e 4259{
6435f0f6 4260 EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,c);
0f113f3e
MC		 4261 CRYPTO_ocb128_cleanup(&octx->ocb);
4262 return 1;
4263}
e6b336ef 4264
c4aede20
MC		 4265BLOCK_CIPHER_custom(NID_aes, 128, 16, 12, ocb, OCB,
4266 EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
4267BLOCK_CIPHER_custom(NID_aes, 192, 16, 12, ocb, OCB,
4268 EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
4269BLOCK_CIPHER_custom(NID_aes, 256, 16, 12, ocb, OCB,
4270 EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
5158c763 4271#endif /* OPENSSL_NO_OCB */
b1ceb439
TS		 4272
4273/* AES-SIV mode */
4274#ifndef OPENSSL_NO_SIV
4275
4276typedef SIV128_CONTEXT EVP_AES_SIV_CTX;
4277
4278#define aesni_siv_init_key aes_siv_init_key
4279static int aes_siv_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
4280 const unsigned char *iv, int enc)
4281{
4282 const EVP_CIPHER *ctr;
4283 const EVP_CIPHER *cbc;
4284 SIV128_CONTEXT *sctx = EVP_C_DATA(SIV128_CONTEXT, ctx);
4285 int klen = EVP_CIPHER_CTX_key_length(ctx) / 2;
4286
4287 if (key == NULL)
4288 return 1;
4289
4290 switch (klen) {
4291 case 16:
4292 cbc = EVP_aes_128_cbc();
4293 ctr = EVP_aes_128_ctr();
4294 break;
4295 case 24:
4296 cbc = EVP_aes_192_cbc();
4297 ctr = EVP_aes_192_ctr();
4298 break;
4299 case 32:
4300 cbc = EVP_aes_256_cbc();
4301 ctr = EVP_aes_256_ctr();
4302 break;
4303 default:
4304 return 0;
4305 }
4306
4307 /* klen is the length of the underlying cipher, not the input key,
4308 which should be twice as long */
4309 return CRYPTO_siv128_init(sctx, key, klen, cbc, ctr);
4310}
4311
4312#define aesni_siv_cipher aes_siv_cipher
4313static int aes_siv_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
4314 const unsigned char *in, size_t len)
4315{
4316 SIV128_CONTEXT *sctx = EVP_C_DATA(SIV128_CONTEXT, ctx);
4317
4318 /* EncryptFinal or DecryptFinal */
4319 if (in == NULL)
4320 return CRYPTO_siv128_finish(sctx);
4321
4322 /* Deal with associated data */
4323 if (out == NULL)
4324 return CRYPTO_siv128_aad(sctx, in, len);
4325
4326 if (EVP_CIPHER_CTX_encrypting(ctx))
4327 return CRYPTO_siv128_encrypt(sctx, in, out, len);
4328
4329 return CRYPTO_siv128_decrypt(sctx, in, out, len);
4330}
4331
4332#define aesni_siv_cleanup aes_siv_cleanup
4333static int aes_siv_cleanup(EVP_CIPHER_CTX *c)
4334{
4335 SIV128_CONTEXT *sctx = EVP_C_DATA(SIV128_CONTEXT, c);
4336
4337 return CRYPTO_siv128_cleanup(sctx);
4338}
4339
4340
4341#define aesni_siv_ctrl aes_siv_ctrl
4342static int aes_siv_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
4343{
4344 SIV128_CONTEXT *sctx = EVP_C_DATA(SIV128_CONTEXT, c);
4345 SIV128_CONTEXT *sctx_out;
4346
4347 switch (type) {
4348 case EVP_CTRL_INIT:
4349 return CRYPTO_siv128_cleanup(sctx);
4350
4351 case EVP_CTRL_SET_SPEED:
4352 return CRYPTO_siv128_speed(sctx, arg);
4353
4354 case EVP_CTRL_AEAD_SET_TAG:
4355 if (!EVP_CIPHER_CTX_encrypting(c))
4356 return CRYPTO_siv128_set_tag(sctx, ptr, arg);
4357 return 1;
4358
4359 case EVP_CTRL_AEAD_GET_TAG:
4360 if (!EVP_CIPHER_CTX_encrypting(c))
4361 return 0;
4362 return CRYPTO_siv128_get_tag(sctx, ptr, arg);
4363
4364 case EVP_CTRL_COPY:
4365 sctx_out = EVP_C_DATA(SIV128_CONTEXT, (EVP_CIPHER_CTX*)ptr);
4366 return CRYPTO_siv128_copy_ctx(sctx_out, sctx);
4367
4368 default:
4369 return -1;
4370
4371 }
4372}
4373
4374#define SIV_FLAGS (EVP_CIPH_FLAG_AEAD_CIPHER | EVP_CIPH_FLAG_DEFAULT_ASN1 \
4375 | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
4376 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CUSTOM_COPY \
4377 | EVP_CIPH_CTRL_INIT)
4378
4379BLOCK_CIPHER_custom(NID_aes, 128, 1, 0, siv, SIV, SIV_FLAGS)
4380BLOCK_CIPHER_custom(NID_aes, 192, 1, 0, siv, SIV, SIV_FLAGS)
4381BLOCK_CIPHER_custom(NID_aes, 256, 1, 0, siv, SIV, SIV_FLAGS)
4382#endif
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