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Add and use HAS_CASE_PREFIX(), CHECK_AND_SKIP_CASE_PREFIX(), and HAS_CASE_SUFFIX()
[thirdparty/openssl.git] / engines / e_ossltest.c
CommitLineData
2d5d70b1 1/*
38fc02a7 2 * Copyright 2015-2021 The OpenSSL Project Authors. All Rights Reserved.
2d5d70b1 3 *
ab3fa1c0 4 * Licensed under the Apache License 2.0 (the "License"). You may not use
440e5d80
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
2d5d70b1
MC		 8 */
9
10/*
11 * This is the OSSLTEST engine. It provides deliberately crippled digest
12 * implementations for test purposes. It is highly insecure and must NOT be
13 * used for any purpose except testing
14 */
15
cf8e8cba
P		 16/* We need to use some engine deprecated APIs */
17#define OPENSSL_SUPPRESS_DEPRECATED
18
85d843c8
P		 19/*
20 * SHA low level APIs are deprecated for public use, but still ok for
21 * internal use. Note, that due to symbols not being exported, only the
22 * #defines and type definitions can be accessed, function calls are not
23 * available. The digest lengths, block sizes and sizeof(CTX) are used herein
24 * for several different digests.
25 */
26#include "internal/deprecated.h"
27
2d5d70b1
MC		 28#include <stdio.h>
29#include <string.h>
747adb6a 30#include "internal/cryptlib.h"
2d5d70b1
MC		 31
32#include <openssl/engine.h>
33#include <openssl/sha.h>
34#include <openssl/md5.h>
35#include <openssl/rsa.h>
36#include <openssl/evp.h>
37#include <openssl/modes.h>
38#include <openssl/aes.h>
c57c32a8 39#include <openssl/rand.h>
7b9f8f7f 40#include <openssl/crypto.h>
0a3b330c 41#include <openssl/pem.h>
64da15c4 42#include <crypto/evp.h>
2d5d70b1 43
2d5d70b1
MC		 44#include "e_ossltest_err.c"
45
46/* Engine Id and Name */
47static const char *engine_ossltest_id = "ossltest";
48static const char *engine_ossltest_name = "OpenSSL Test engine support";
49
50
51/* Engine Lifetime functions */
52static int ossltest_destroy(ENGINE *e);
53static int ossltest_init(ENGINE *e);
54static int ossltest_finish(ENGINE *e);
55void ENGINE_load_ossltest(void);
56
57
58/* Set up digests */
59static int ossltest_digests(ENGINE *e, const EVP_MD **digest,
60 const int **nids, int nid);
c57c32a8 61static const RAND_METHOD *ossltest_rand_method(void);
2d5d70b1 62
2d5d70b1
MC		 63/* MD5 */
64static int digest_md5_init(EVP_MD_CTX *ctx);
65static int digest_md5_update(EVP_MD_CTX *ctx, const void *data,
16a9542a 66 size_t count);
2d5d70b1
MC		 67static int digest_md5_final(EVP_MD_CTX *ctx, unsigned char *md);
68
cddcea8c
RL		 69static EVP_MD *_hidden_md5_md = NULL;
70static const EVP_MD *digest_md5(void)
71{
72 if (_hidden_md5_md == NULL) {
73 EVP_MD *md;
74
75 if ((md = EVP_MD_meth_new(NID_md5, NID_md5WithRSAEncryption)) == NULL
76 || !EVP_MD_meth_set_result_size(md, MD5_DIGEST_LENGTH)
77 || !EVP_MD_meth_set_input_blocksize(md, MD5_CBLOCK)
78 || !EVP_MD_meth_set_app_datasize(md,
79 sizeof(EVP_MD *) + sizeof(MD5_CTX))
80 || !EVP_MD_meth_set_flags(md, 0)
81 || !EVP_MD_meth_set_init(md, digest_md5_init)
82 || !EVP_MD_meth_set_update(md, digest_md5_update)
83 || !EVP_MD_meth_set_final(md, digest_md5_final)) {
84 EVP_MD_meth_free(md);
85 md = NULL;
86 }
87 _hidden_md5_md = md;
88 }
89 return _hidden_md5_md;
90}
2d5d70b1
MC		 91
92/* SHA1 */
93static int digest_sha1_init(EVP_MD_CTX *ctx);
94static int digest_sha1_update(EVP_MD_CTX *ctx, const void *data,
16a9542a 95 size_t count);
2d5d70b1
MC		 96static int digest_sha1_final(EVP_MD_CTX *ctx, unsigned char *md);
97
cddcea8c
RL		 98static EVP_MD *_hidden_sha1_md = NULL;
99static const EVP_MD *digest_sha1(void)
100{
101 if (_hidden_sha1_md == NULL) {
102 EVP_MD *md;
103
104 if ((md = EVP_MD_meth_new(NID_sha1, NID_sha1WithRSAEncryption)) == NULL
105 || !EVP_MD_meth_set_result_size(md, SHA_DIGEST_LENGTH)
106 || !EVP_MD_meth_set_input_blocksize(md, SHA_CBLOCK)
107 || !EVP_MD_meth_set_app_datasize(md,
108 sizeof(EVP_MD *) + sizeof(SHA_CTX))
109 || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_DIGALGID_ABSENT)
110 || !EVP_MD_meth_set_init(md, digest_sha1_init)
111 || !EVP_MD_meth_set_update(md, digest_sha1_update)
112 || !EVP_MD_meth_set_final(md, digest_sha1_final)) {
113 EVP_MD_meth_free(md);
114 md = NULL;
115 }
116 _hidden_sha1_md = md;
117 }
118 return _hidden_sha1_md;
119}
2d5d70b1
MC		 120
121/* SHA256 */
122static int digest_sha256_init(EVP_MD_CTX *ctx);
123static int digest_sha256_update(EVP_MD_CTX *ctx, const void *data,
16a9542a 124 size_t count);
2d5d70b1
MC		 125static int digest_sha256_final(EVP_MD_CTX *ctx, unsigned char *md);
126
cddcea8c
RL		 127static EVP_MD *_hidden_sha256_md = NULL;
128static const EVP_MD *digest_sha256(void)
129{
130 if (_hidden_sha256_md == NULL) {
131 EVP_MD *md;
132
133 if ((md = EVP_MD_meth_new(NID_sha256, NID_sha256WithRSAEncryption)) == NULL
134 || !EVP_MD_meth_set_result_size(md, SHA256_DIGEST_LENGTH)
135 || !EVP_MD_meth_set_input_blocksize(md, SHA256_CBLOCK)
136 || !EVP_MD_meth_set_app_datasize(md,
137 sizeof(EVP_MD *) + sizeof(SHA256_CTX))
138 || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_DIGALGID_ABSENT)
139 || !EVP_MD_meth_set_init(md, digest_sha256_init)
140 || !EVP_MD_meth_set_update(md, digest_sha256_update)
141 || !EVP_MD_meth_set_final(md, digest_sha256_final)) {
142 EVP_MD_meth_free(md);
143 md = NULL;
144 }
145 _hidden_sha256_md = md;
146 }
147 return _hidden_sha256_md;
148}
2d5d70b1
MC		 149
150/* SHA384/SHA512 */
151static int digest_sha384_init(EVP_MD_CTX *ctx);
85d843c8
P		 152static int digest_sha384_update(EVP_MD_CTX *ctx, const void *data,
153 size_t count);
154static int digest_sha384_final(EVP_MD_CTX *ctx, unsigned char *md);
155
2d5d70b1
MC		 156static int digest_sha512_init(EVP_MD_CTX *ctx);
157static int digest_sha512_update(EVP_MD_CTX *ctx, const void *data,
16a9542a 158 size_t count);
2d5d70b1
MC		 159static int digest_sha512_final(EVP_MD_CTX *ctx, unsigned char *md);
160
cddcea8c
RL		 161static EVP_MD *_hidden_sha384_md = NULL;
162static const EVP_MD *digest_sha384(void)
163{
164 if (_hidden_sha384_md == NULL) {
165 EVP_MD *md;
166
167 if ((md = EVP_MD_meth_new(NID_sha384, NID_sha384WithRSAEncryption)) == NULL
168 || !EVP_MD_meth_set_result_size(md, SHA384_DIGEST_LENGTH)
169 || !EVP_MD_meth_set_input_blocksize(md, SHA512_CBLOCK)
170 || !EVP_MD_meth_set_app_datasize(md,
171 sizeof(EVP_MD *) + sizeof(SHA512_CTX))
172 || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_DIGALGID_ABSENT)
173 || !EVP_MD_meth_set_init(md, digest_sha384_init)
85d843c8 174 || !EVP_MD_meth_set_update(md, digest_sha384_update)
cddcea8c
RL		 175 || !EVP_MD_meth_set_final(md, digest_sha384_final)) {
176 EVP_MD_meth_free(md);
177 md = NULL;
178 }
179 _hidden_sha384_md = md;
180 }
181 return _hidden_sha384_md;
182}
183static EVP_MD *_hidden_sha512_md = NULL;
184static const EVP_MD *digest_sha512(void)
185{
186 if (_hidden_sha512_md == NULL) {
187 EVP_MD *md;
188
189 if ((md = EVP_MD_meth_new(NID_sha512, NID_sha512WithRSAEncryption)) == NULL
190 || !EVP_MD_meth_set_result_size(md, SHA512_DIGEST_LENGTH)
191 || !EVP_MD_meth_set_input_blocksize(md, SHA512_CBLOCK)
192 || !EVP_MD_meth_set_app_datasize(md,
193 sizeof(EVP_MD *) + sizeof(SHA512_CTX))
194 || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_DIGALGID_ABSENT)
195 || !EVP_MD_meth_set_init(md, digest_sha512_init)
196 || !EVP_MD_meth_set_update(md, digest_sha512_update)
197 || !EVP_MD_meth_set_final(md, digest_sha512_final)) {
198 EVP_MD_meth_free(md);
199 md = NULL;
200 }
201 _hidden_sha512_md = md;
202 }
203 return _hidden_sha512_md;
204}
205static void destroy_digests(void)
206{
207 EVP_MD_meth_free(_hidden_md5_md);
208 _hidden_md5_md = NULL;
209 EVP_MD_meth_free(_hidden_sha1_md);
210 _hidden_sha1_md = NULL;
211 EVP_MD_meth_free(_hidden_sha256_md);
212 _hidden_sha256_md = NULL;
213 EVP_MD_meth_free(_hidden_sha384_md);
214 _hidden_sha384_md = NULL;
215 EVP_MD_meth_free(_hidden_sha512_md);
216 _hidden_sha512_md = NULL;
217}
218static int ossltest_digest_nids(const int **nids)
219{
220 static int digest_nids[6] = { 0, 0, 0, 0, 0, 0 };
221 static int pos = 0;
222 static int init = 0;
223
224 if (!init) {
225 const EVP_MD *md;
226 if ((md = digest_md5()) != NULL)
ed576acd 227 digest_nids[pos++] = EVP_MD_get_type(md);
cddcea8c 228 if ((md = digest_sha1()) != NULL)
ed576acd 229 digest_nids[pos++] = EVP_MD_get_type(md);
cddcea8c 230 if ((md = digest_sha256()) != NULL)
ed576acd 231 digest_nids[pos++] = EVP_MD_get_type(md);
cddcea8c 232 if ((md = digest_sha384()) != NULL)
ed576acd 233 digest_nids[pos++] = EVP_MD_get_type(md);
cddcea8c 234 if ((md = digest_sha512()) != NULL)
ed576acd 235 digest_nids[pos++] = EVP_MD_get_type(md);
cddcea8c
RL		 236 digest_nids[pos] = 0;
237 init = 1;
238 }
239 *nids = digest_nids;
240 return pos;
241}
2d5d70b1
MC		 242
243/* Setup ciphers */
244static int ossltest_ciphers(ENGINE *, const EVP_CIPHER **,
245 const int **, int);
246
247static int ossltest_cipher_nids[] = {
64da15c4
BE		 248 NID_aes_128_cbc, NID_aes_128_gcm,
249 NID_aes_128_cbc_hmac_sha1, 0
2d5d70b1
MC		 250};
251
252/* AES128 */
253
64da15c4
BE		 254static int ossltest_aes128_init_key(EVP_CIPHER_CTX *ctx,
255 const unsigned char *key,
256 const unsigned char *iv, int enc);
257static int ossltest_aes128_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
258 const unsigned char *in, size_t inl);
259static int ossltest_aes128_gcm_init_key(EVP_CIPHER_CTX *ctx,
260 const unsigned char *key,
261 const unsigned char *iv, int enc);
262static int ossltest_aes128_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
263 const unsigned char *in, size_t inl);
aad22ba2
MC		 264static int ossltest_aes128_gcm_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,
265 void *ptr);
64da15c4
BE		 266static int ossltest_aes128_cbc_hmac_sha1_init_key(EVP_CIPHER_CTX *ctx,
267 const unsigned char *key,
268 const unsigned char *iv,
269 int enc);
270static int ossltest_aes128_cbc_hmac_sha1_cipher(EVP_CIPHER_CTX *ctx,
271 unsigned char *out,
272 const unsigned char *in,
273 size_t inl);
274static int ossltest_aes128_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX *ctx, int type,
275 int arg, void *ptr);
276
277typedef struct {
278 size_t payload_length; /* AAD length in decrypt case */
279 unsigned int tls_ver;
280} EVP_AES_HMAC_SHA1;
2d5d70b1 281
39e8d0ce
RL		 282static EVP_CIPHER *_hidden_aes_128_cbc = NULL;
283static const EVP_CIPHER *ossltest_aes_128_cbc(void)
284{
285 if (_hidden_aes_128_cbc == NULL
286 && ((_hidden_aes_128_cbc = EVP_CIPHER_meth_new(NID_aes_128_cbc,
287 16 /* block size */,
288 16 /* key len */)) == NULL
289 || !EVP_CIPHER_meth_set_iv_length(_hidden_aes_128_cbc,16)
290 || !EVP_CIPHER_meth_set_flags(_hidden_aes_128_cbc,
291 EVP_CIPH_FLAG_DEFAULT_ASN1
292 | EVP_CIPH_CBC_MODE)
293 || !EVP_CIPHER_meth_set_init(_hidden_aes_128_cbc,
294 ossltest_aes128_init_key)
295 || !EVP_CIPHER_meth_set_do_cipher(_hidden_aes_128_cbc,
296 ossltest_aes128_cbc_cipher)
297 || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_aes_128_cbc,
ed576acd 298 EVP_CIPHER_impl_ctx_size(EVP_aes_128_cbc())))) {
39e8d0ce
RL		 299 EVP_CIPHER_meth_free(_hidden_aes_128_cbc);
300 _hidden_aes_128_cbc = NULL;
301 }
302 return _hidden_aes_128_cbc;
303}
64da15c4 304
aad22ba2 305static EVP_CIPHER *_hidden_aes_128_gcm = NULL;
ca0b75ad 306
aad22ba2
MC		 307#define AES_GCM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \
308 | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
309 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \
310 | EVP_CIPH_CUSTOM_COPY |EVP_CIPH_FLAG_AEAD_CIPHER \
311 | EVP_CIPH_GCM_MODE)
ca0b75ad 312
aad22ba2
MC		 313static const EVP_CIPHER *ossltest_aes_128_gcm(void)
314{
315 if (_hidden_aes_128_gcm == NULL
316 && ((_hidden_aes_128_gcm = EVP_CIPHER_meth_new(NID_aes_128_gcm,
317 1 /* block size */,
318 16 /* key len */)) == NULL
319 || !EVP_CIPHER_meth_set_iv_length(_hidden_aes_128_gcm,12)
320 || !EVP_CIPHER_meth_set_flags(_hidden_aes_128_gcm, AES_GCM_FLAGS)
321 || !EVP_CIPHER_meth_set_init(_hidden_aes_128_gcm,
322 ossltest_aes128_gcm_init_key)
323 || !EVP_CIPHER_meth_set_do_cipher(_hidden_aes_128_gcm,
324 ossltest_aes128_gcm_cipher)
325 || !EVP_CIPHER_meth_set_ctrl(_hidden_aes_128_gcm,
326 ossltest_aes128_gcm_ctrl)
327 || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_aes_128_gcm,
ed576acd 328 EVP_CIPHER_impl_ctx_size(EVP_aes_128_gcm())))) {
aad22ba2
MC		 329 EVP_CIPHER_meth_free(_hidden_aes_128_gcm);
330 _hidden_aes_128_gcm = NULL;
331 }
332 return _hidden_aes_128_gcm;
333}
334
64da15c4
BE		 335static EVP_CIPHER *_hidden_aes_128_cbc_hmac_sha1 = NULL;
336
337static const EVP_CIPHER *ossltest_aes_128_cbc_hmac_sha1(void)
338{
339 if (_hidden_aes_128_cbc_hmac_sha1 == NULL
340 && ((_hidden_aes_128_cbc_hmac_sha1
341 = EVP_CIPHER_meth_new(NID_aes_128_cbc_hmac_sha1,
342 16 /* block size */,
343 16 /* key len */)) == NULL
344 || !EVP_CIPHER_meth_set_iv_length(_hidden_aes_128_cbc_hmac_sha1,16)
345 || !EVP_CIPHER_meth_set_flags(_hidden_aes_128_cbc_hmac_sha1,
346 EVP_CIPH_CBC_MODE | EVP_CIPH_FLAG_DEFAULT_ASN1 |
347 EVP_CIPH_FLAG_AEAD_CIPHER)
348 || !EVP_CIPHER_meth_set_init(_hidden_aes_128_cbc_hmac_sha1,
349 ossltest_aes128_cbc_hmac_sha1_init_key)
350 || !EVP_CIPHER_meth_set_do_cipher(_hidden_aes_128_cbc_hmac_sha1,
351 ossltest_aes128_cbc_hmac_sha1_cipher)
352 || !EVP_CIPHER_meth_set_ctrl(_hidden_aes_128_cbc_hmac_sha1,
353 ossltest_aes128_cbc_hmac_sha1_ctrl)
354 || !EVP_CIPHER_meth_set_set_asn1_params(_hidden_aes_128_cbc_hmac_sha1,
355 EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_set_asn1_iv)
356 || !EVP_CIPHER_meth_set_get_asn1_params(_hidden_aes_128_cbc_hmac_sha1,
357 EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_get_asn1_iv)
358 || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_aes_128_cbc_hmac_sha1,
359 sizeof(EVP_AES_HMAC_SHA1)))) {
360 EVP_CIPHER_meth_free(_hidden_aes_128_cbc_hmac_sha1);
361 _hidden_aes_128_cbc_hmac_sha1 = NULL;
362 }
363 return _hidden_aes_128_cbc_hmac_sha1;
364}
365
39e8d0ce
RL		 366static void destroy_ciphers(void)
367{
368 EVP_CIPHER_meth_free(_hidden_aes_128_cbc);
aad22ba2 369 EVP_CIPHER_meth_free(_hidden_aes_128_gcm);
64da15c4 370 EVP_CIPHER_meth_free(_hidden_aes_128_cbc_hmac_sha1);
39e8d0ce 371 _hidden_aes_128_cbc = NULL;
64da15c4
BE		 372 _hidden_aes_128_gcm = NULL;
373 _hidden_aes_128_cbc_hmac_sha1 = NULL;
39e8d0ce 374}
2d5d70b1 375
0a3b330c
RL		 376/* Key loading */
377static EVP_PKEY *load_key(ENGINE *eng, const char *key_id, int pub,
378 UI_METHOD *ui_method, void *ui_data)
379{
380 BIO *in;
381 EVP_PKEY *key;
382
747adb6a 383 if (!CHECK_AND_SKIP_CASE_PREFIX(key_id, "ot:"))
0a3b330c 384 return NULL;
0a3b330c
RL		 385
386 fprintf(stderr, "[ossltest]Loading %s key %s\n",
387 pub ? "Public" : "Private", key_id);
388 in = BIO_new_file(key_id, "r");
389 if (!in)
390 return NULL;
391 if (pub)
392 key = PEM_read_bio_PUBKEY(in, NULL, 0, NULL);
393 else
394 key = PEM_read_bio_PrivateKey(in, NULL, 0, NULL);
395 BIO_free(in);
396 return key;
397}
398
399static EVP_PKEY *ossltest_load_privkey(ENGINE *eng, const char *key_id,
400 UI_METHOD *ui_method, void *ui_data)
401{
402 return load_key(eng, key_id, 0, ui_method, ui_data);
403}
404
405static EVP_PKEY *ossltest_load_pubkey(ENGINE *eng, const char *key_id,
406 UI_METHOD *ui_method, void *ui_data)
407{
408 return load_key(eng, key_id, 1, ui_method, ui_data);
409}
410
411
2d5d70b1
MC		 412static int bind_ossltest(ENGINE *e)
413{
414 /* Ensure the ossltest error handling is set up */
415 ERR_load_OSSLTEST_strings();
416
417 if (!ENGINE_set_id(e, engine_ossltest_id)
418 || !ENGINE_set_name(e, engine_ossltest_name)
419 || !ENGINE_set_digests(e, ossltest_digests)
420 || !ENGINE_set_ciphers(e, ossltest_ciphers)
c57c32a8 421 || !ENGINE_set_RAND(e, ossltest_rand_method())
2d5d70b1 422 || !ENGINE_set_destroy_function(e, ossltest_destroy)
0a3b330c
RL		 423 || !ENGINE_set_load_privkey_function(e, ossltest_load_privkey)
424 || !ENGINE_set_load_pubkey_function(e, ossltest_load_pubkey)
2d5d70b1
MC		 425 || !ENGINE_set_init_function(e, ossltest_init)
426 || !ENGINE_set_finish_function(e, ossltest_finish)) {
427 OSSLTESTerr(OSSLTEST_F_BIND_OSSLTEST, OSSLTEST_R_INIT_FAILED);
428 return 0;
429 }
430
431 return 1;
432}
433
c0cbb4c1 434#ifndef OPENSSL_NO_DYNAMIC_ENGINE
2d5d70b1
MC		 435static int bind_helper(ENGINE *e, const char *id)
436{
437 if (id && (strcmp(id, engine_ossltest_id) != 0))
438 return 0;
439 if (!bind_ossltest(e))
440 return 0;
441 return 1;
442}
443
444IMPLEMENT_DYNAMIC_CHECK_FN()
445 IMPLEMENT_DYNAMIC_BIND_FN(bind_helper)
c0cbb4c1
RL		 446#endif
447
2d5d70b1
MC		 448static ENGINE *engine_ossltest(void)
449{
450 ENGINE *ret = ENGINE_new();
55646005 451 if (ret == NULL)
2d5d70b1
MC		 452 return NULL;
453 if (!bind_ossltest(ret)) {
454 ENGINE_free(ret);
455 return NULL;
456 }
457 return ret;
458}
459
460void ENGINE_load_ossltest(void)
461{
462 /* Copied from eng_[openssl|dyn].c */
463 ENGINE *toadd = engine_ossltest();
464 if (!toadd)
465 return;
466 ENGINE_add(toadd);
467 ENGINE_free(toadd);
468 ERR_clear_error();
469}
2d5d70b1
MC		 470
471
472static int ossltest_init(ENGINE *e)
473{
474 return 1;
475}
476
477
478static int ossltest_finish(ENGINE *e)
479{
480 return 1;
481}
482
483
484static int ossltest_destroy(ENGINE *e)
485{
cddcea8c 486 destroy_digests();
39e8d0ce 487 destroy_ciphers();
2d5d70b1
MC		 488 ERR_unload_OSSLTEST_strings();
489 return 1;
490}
491
492static int ossltest_digests(ENGINE *e, const EVP_MD **digest,
493 const int **nids, int nid)
494{
495 int ok = 1;
496 if (!digest) {
497 /* We are returning a list of supported nids */
cddcea8c 498 return ossltest_digest_nids(nids);
2d5d70b1
MC		 499 }
500 /* We are being asked for a specific digest */
501 switch (nid) {
502 case NID_md5:
cddcea8c 503 *digest = digest_md5();
2d5d70b1
MC		 504 break;
505 case NID_sha1:
cddcea8c 506 *digest = digest_sha1();
2d5d70b1
MC		 507 break;
508 case NID_sha256:
cddcea8c 509 *digest = digest_sha256();
2d5d70b1
MC		 510 break;
511 case NID_sha384:
cddcea8c 512 *digest = digest_sha384();
2d5d70b1
MC		 513 break;
514 case NID_sha512:
cddcea8c 515 *digest = digest_sha512();
2d5d70b1
MC		 516 break;
517 default:
518 ok = 0;
519 *digest = NULL;
520 break;
521 }
522 return ok;
523}
524
525static int ossltest_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
526 const int **nids, int nid)
527{
528 int ok = 1;
529 if (!cipher) {
530 /* We are returning a list of supported nids */
531 *nids = ossltest_cipher_nids;
532 return (sizeof(ossltest_cipher_nids) - 1)
533 / sizeof(ossltest_cipher_nids[0]);
534 }
535 /* We are being asked for a specific cipher */
536 switch (nid) {
537 case NID_aes_128_cbc:
39e8d0ce 538 *cipher = ossltest_aes_128_cbc();
2d5d70b1 539 break;
aad22ba2
MC		 540 case NID_aes_128_gcm:
541 *cipher = ossltest_aes_128_gcm();
542 break;
64da15c4
BE		 543 case NID_aes_128_cbc_hmac_sha1:
544 *cipher = ossltest_aes_128_cbc_hmac_sha1();
545 break;
2d5d70b1
MC		 546 default:
547 ok = 0;
548 *cipher = NULL;
549 break;
550 }
551 return ok;
552}
553
554static void fill_known_data(unsigned char *md, unsigned int len)
555{
556 unsigned int i;
557
558 for (i=0; i<len; i++) {
559 md[i] = (unsigned char)(i & 0xff);
560 }
561}
562
563/*
564 * MD5 implementation. We go through the motions of doing MD5 by deferring to
565 * the standard implementation. Then we overwrite the result with a will defined
566 * value, so that all "MD5" digests using the test engine always end up with
567 * the same value.
568 */
2d5d70b1
MC		 569static int digest_md5_init(EVP_MD_CTX *ctx)
570{
85d843c8 571 return EVP_MD_meth_get_init(EVP_md5())(ctx);
2d5d70b1
MC		 572}
573
574static int digest_md5_update(EVP_MD_CTX *ctx, const void *data,
16a9542a 575 size_t count)
2d5d70b1 576{
85d843c8 577 return EVP_MD_meth_get_update(EVP_md5())(ctx, data, count);
2d5d70b1
MC		 578}
579
580static int digest_md5_final(EVP_MD_CTX *ctx, unsigned char *md)
581{
85d843c8 582 int ret = EVP_MD_meth_get_final(EVP_md5())(ctx, md);
2d5d70b1
MC		 583
584 if (ret > 0) {
585 fill_known_data(md, MD5_DIGEST_LENGTH);
586 }
587 return ret;
588}
589
590/*
591 * SHA1 implementation.
592 */
2d5d70b1
MC		 593static int digest_sha1_init(EVP_MD_CTX *ctx)
594{
85d843c8 595 return EVP_MD_meth_get_init(EVP_sha1())(ctx);
2d5d70b1
MC		 596}
597
598static int digest_sha1_update(EVP_MD_CTX *ctx, const void *data,
16a9542a 599 size_t count)
2d5d70b1 600{
85d843c8 601 return EVP_MD_meth_get_update(EVP_sha1())(ctx, data, count);
2d5d70b1
MC		 602}
603
604static int digest_sha1_final(EVP_MD_CTX *ctx, unsigned char *md)
605{
85d843c8 606 int ret = EVP_MD_meth_get_final(EVP_sha1())(ctx, md);
2d5d70b1
MC		 607
608 if (ret > 0) {
609 fill_known_data(md, SHA_DIGEST_LENGTH);
610 }
611 return ret;
612}
613
614/*
615 * SHA256 implementation.
616 */
2d5d70b1
MC		 617static int digest_sha256_init(EVP_MD_CTX *ctx)
618{
85d843c8 619 return EVP_MD_meth_get_init(EVP_sha256())(ctx);
2d5d70b1
MC		 620}
621
622static int digest_sha256_update(EVP_MD_CTX *ctx, const void *data,
16a9542a 623 size_t count)
2d5d70b1 624{
85d843c8 625 return EVP_MD_meth_get_update(EVP_sha256())(ctx, data, count);
2d5d70b1
MC		 626}
627
628static int digest_sha256_final(EVP_MD_CTX *ctx, unsigned char *md)
629{
85d843c8 630 int ret = EVP_MD_meth_get_final(EVP_sha256())(ctx, md);
2d5d70b1
MC		 631
632 if (ret > 0) {
633 fill_known_data(md, SHA256_DIGEST_LENGTH);
634 }
635 return ret;
636}
637
638/*
85d843c8 639 * SHA384 implementation.
2d5d70b1 640 */
2d5d70b1
MC		 641static int digest_sha384_init(EVP_MD_CTX *ctx)
642{
85d843c8 643 return EVP_MD_meth_get_init(EVP_sha384())(ctx);
2d5d70b1
MC		 644}
645
85d843c8 646static int digest_sha384_update(EVP_MD_CTX *ctx, const void *data,
16a9542a 647 size_t count)
2d5d70b1 648{
85d843c8 649 return EVP_MD_meth_get_update(EVP_sha384())(ctx, data, count);
2d5d70b1
MC		 650}
651
652static int digest_sha384_final(EVP_MD_CTX *ctx, unsigned char *md)
653{
85d843c8 654 int ret = EVP_MD_meth_get_final(EVP_sha384())(ctx, md);
2d5d70b1
MC		 655
656 if (ret > 0) {
657 fill_known_data(md, SHA384_DIGEST_LENGTH);
658 }
659 return ret;
660}
661
85d843c8
P		 662/*
663 * SHA512 implementation.
664 */
665static int digest_sha512_init(EVP_MD_CTX *ctx)
666{
667 return EVP_MD_meth_get_init(EVP_sha512())(ctx);
668}
669
670static int digest_sha512_update(EVP_MD_CTX *ctx, const void *data,
671 size_t count)
672{
673 return EVP_MD_meth_get_update(EVP_sha512())(ctx, data, count);
674}
675
2d5d70b1
MC		 676static int digest_sha512_final(EVP_MD_CTX *ctx, unsigned char *md)
677{
85d843c8 678 int ret = EVP_MD_meth_get_final(EVP_sha512())(ctx, md);
2d5d70b1
MC		 679
680 if (ret > 0) {
681 fill_known_data(md, SHA512_DIGEST_LENGTH);
682 }
683 return ret;
684}
685
686/*
687 * AES128 Implementation
688 */
689
64da15c4
BE		 690static int ossltest_aes128_init_key(EVP_CIPHER_CTX *ctx,
691 const unsigned char *key,
692 const unsigned char *iv, int enc)
2d5d70b1 693{
39e8d0ce 694 return EVP_CIPHER_meth_get_init(EVP_aes_128_cbc()) (ctx, key, iv, enc);
2d5d70b1
MC		 695}
696
64da15c4
BE		 697static int ossltest_aes128_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
698 const unsigned char *in, size_t inl)
2d5d70b1
MC		 699{
700 unsigned char *tmpbuf;
701 int ret;
702
703 tmpbuf = OPENSSL_malloc(inl);
04e3bb04
MC		 704
705 /* OPENSSL_malloc will return NULL if inl == 0 */
706 if (tmpbuf == NULL && inl > 0)
2d5d70b1
MC		 707 return -1;
708
709 /* Remember what we were asked to encrypt */
04e3bb04
MC		 710 if (tmpbuf != NULL)
711 memcpy(tmpbuf, in, inl);
2d5d70b1
MC		 712
713 /* Go through the motions of encrypting it */
39e8d0ce 714 ret = EVP_CIPHER_meth_get_do_cipher(EVP_aes_128_cbc())(ctx, out, in, inl);
2d5d70b1
MC		 715
716 /* Throw it all away and just use the plaintext as the output */
04e3bb04
MC		 717 if (tmpbuf != NULL)
718 memcpy(out, tmpbuf, inl);
2d5d70b1
MC		 719 OPENSSL_free(tmpbuf);
720
721 return ret;
722}
aad22ba2 723
64da15c4
BE		 724static int ossltest_aes128_gcm_init_key(EVP_CIPHER_CTX *ctx,
725 const unsigned char *key,
726 const unsigned char *iv, int enc)
aad22ba2
MC		 727{
728 return EVP_CIPHER_meth_get_init(EVP_aes_128_gcm()) (ctx, key, iv, enc);
729}
730
64da15c4
BE		 731static int ossltest_aes128_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
732 const unsigned char *in, size_t inl)
aad22ba2 733{
bebc0c7d 734 unsigned char *tmpbuf = OPENSSL_malloc(inl);
aad22ba2 735
6606d600 736 /* OPENSSL_malloc will return NULL if inl == 0 */
bebc0c7d 737 if (tmpbuf == NULL && inl > 0)
aad22ba2
MC		 738 return -1;
739
740 /* Remember what we were asked to encrypt */
04e3bb04
MC		 741 if (tmpbuf != NULL)
742 memcpy(tmpbuf, in, inl);
aad22ba2
MC		 743
744 /* Go through the motions of encrypting it */
745 EVP_CIPHER_meth_get_do_cipher(EVP_aes_128_gcm())(ctx, out, in, inl);
746
6606d600 747 /* Throw it all away and just use the plaintext as the output */
3295d242 748 if (tmpbuf != NULL && out != NULL)
04e3bb04 749 memcpy(out, tmpbuf, inl);
aad22ba2
MC		 750 OPENSSL_free(tmpbuf);
751
bebc0c7d 752 return inl;
aad22ba2
MC		 753}
754
755static int ossltest_aes128_gcm_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,
756 void *ptr)
757{
aad22ba2 758 /* Pass the ctrl down */
6606d600 759 int ret = EVP_CIPHER_meth_get_ctrl(EVP_aes_128_gcm())(ctx, type, arg, ptr);
bebc0c7d
MC		 760
761 if (ret <= 0)
762 return ret;
763
1287dabd 764 switch (type) {
bebc0c7d
MC		 765 case EVP_CTRL_AEAD_GET_TAG:
766 /* Always give the same tag */
767 memset(ptr, 0, EVP_GCM_TLS_TAG_LEN);
768 break;
769
770 default:
771 break;
772 }
773
774 return 1;
aad22ba2 775}
c57c32a8 776
64da15c4
BE		 777#define NO_PAYLOAD_LENGTH ((size_t)-1)
778# define data(ctx) ((EVP_AES_HMAC_SHA1 *)EVP_CIPHER_CTX_get_cipher_data(ctx))
779
780static int ossltest_aes128_cbc_hmac_sha1_init_key(EVP_CIPHER_CTX *ctx,
781 const unsigned char *inkey,
782 const unsigned char *iv,
783 int enc)
784{
785 EVP_AES_HMAC_SHA1 *key = data(ctx);
786 key->payload_length = NO_PAYLOAD_LENGTH;
787 return 1;
788}
789
790static int ossltest_aes128_cbc_hmac_sha1_cipher(EVP_CIPHER_CTX *ctx,
791 unsigned char *out,
792 const unsigned char *in,
793 size_t len)
794{
795 EVP_AES_HMAC_SHA1 *key = data(ctx);
796 unsigned int l;
797 size_t plen = key->payload_length;
798
799 key->payload_length = NO_PAYLOAD_LENGTH;
800
801 if (len % AES_BLOCK_SIZE)
802 return 0;
803
804 if (EVP_CIPHER_CTX_is_encrypting(ctx)) {
805 if (plen == NO_PAYLOAD_LENGTH)
806 plen = len;
807 else if (len !=
808 ((plen + SHA_DIGEST_LENGTH +
809 AES_BLOCK_SIZE) & -AES_BLOCK_SIZE))
810 return 0;
811
812 memmove(out, in, plen);
813
814 if (plen != len) { /* "TLS" mode of operation */
815 /* calculate HMAC and append it to payload */
816 fill_known_data(out + plen, SHA_DIGEST_LENGTH);
817
818 /* pad the payload|hmac */
819 plen += SHA_DIGEST_LENGTH;
820 for (l = len - plen - 1; plen < len; plen++)
821 out[plen] = l;
822 }
823 } else {
824 /* decrypt HMAC|padding at once */
825 memmove(out, in, len);
826
827 if (plen != NO_PAYLOAD_LENGTH) { /* "TLS" mode of operation */
828 unsigned int maxpad, pad;
829
830 if (key->tls_ver >= TLS1_1_VERSION) {
831 if (len < (AES_BLOCK_SIZE + SHA_DIGEST_LENGTH + 1))
832 return 0;
833
834 /* omit explicit iv */
835 in += AES_BLOCK_SIZE;
836 out += AES_BLOCK_SIZE;
837 len -= AES_BLOCK_SIZE;
838 } else if (len < (SHA_DIGEST_LENGTH + 1))
839 return 0;
840
841 /* figure out payload length */
842 pad = out[len - 1];
843 maxpad = len - (SHA_DIGEST_LENGTH + 1);
844 if (pad > maxpad)
845 return 0;
846 for (plen = len - pad - 1; plen < len; plen++)
847 if (out[plen] != pad)
848 return 0;
849 }
850 }
851
852 return 1;
853}
854
855static int ossltest_aes128_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX *ctx, int type,
856 int arg, void *ptr)
857{
858 EVP_AES_HMAC_SHA1 *key = data(ctx);
859
860 switch (type) {
861 case EVP_CTRL_AEAD_SET_MAC_KEY:
862 return 1;
863
864 case EVP_CTRL_AEAD_TLS1_AAD:
865 {
866 unsigned char *p = ptr;
867 unsigned int len;
868
869 if (arg != EVP_AEAD_TLS1_AAD_LEN)
870 return -1;
871
872 len = p[arg - 2] << 8 | p[arg - 1];
873 key->tls_ver = p[arg - 4] << 8 | p[arg - 3];
874
875 if (EVP_CIPHER_CTX_is_encrypting(ctx)) {
876 key->payload_length = len;
877 if (key->tls_ver >= TLS1_1_VERSION) {
878 if (len < AES_BLOCK_SIZE)
879 return 0;
880 len -= AES_BLOCK_SIZE;
881 p[arg - 2] = len >> 8;
882 p[arg - 1] = len;
883 }
884
885 return (int)(((len + SHA_DIGEST_LENGTH +
886 AES_BLOCK_SIZE) & -AES_BLOCK_SIZE)
887 - len);
888 } else {
889 key->payload_length = arg;
890
891 return SHA_DIGEST_LENGTH;
892 }
893 }
894 default:
895 return -1;
896 }
897}
898
c57c32a8
DSH		 899static int ossltest_rand_bytes(unsigned char *buf, int num)
900{
901 unsigned char val = 1;
902
903 while (--num >= 0)
904 *buf++ = val++;
905 return 1;
906}
907
908static int ossltest_rand_status(void)
909{
910 return 1;
911}
912
913static const RAND_METHOD *ossltest_rand_method(void)
914{
915
916 static RAND_METHOD osslt_rand_meth = {
917 NULL,
918 ossltest_rand_bytes,
919 NULL,
920 NULL,
921 ossltest_rand_bytes,
922 ossltest_rand_status
923 };
924
925 return &osslt_rand_meth;
926}
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