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0f113f3e | 1 | /* |
8020d79b | 2 | * Copyright 2005-2021 The OpenSSL Project Authors. All Rights Reserved. |
a0156a92 | 3 | * |
16742672 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
62867571 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 | |
a0156a92 DSH |
8 | */ |
9 | ||
0f113f3e MC |
10 | /* |
11 | * Support for PVK format keys and related structures (such a PUBLICKEYBLOB | |
a0156a92 DSH |
12 | * and PRIVATEKEYBLOB). |
13 | */ | |
14 | ||
f41ac0ee | 15 | /* |
a158f8cf | 16 | * RSA and DSA low level APIs are deprecated for public use, but still ok for |
f41ac0ee P |
17 | * internal use. |
18 | */ | |
19 | #include "internal/deprecated.h" | |
20 | ||
a0156a92 DSH |
21 | #include <openssl/pem.h> |
22 | #include <openssl/rand.h> | |
1e26a8ba | 23 | #include <openssl/bn.h> |
a158f8cf RL |
24 | #include <openssl/dsa.h> |
25 | #include <openssl/rsa.h> | |
e77c13f8 RL |
26 | #include "internal/cryptlib.h" |
27 | #include "crypto/pem.h" | |
28 | #include "crypto/evp.h" | |
a0156a92 | 29 | |
0f113f3e MC |
30 | /* |
31 | * Utility function: read a DWORD (4 byte unsigned integer) in little endian | |
a0156a92 DSH |
32 | * format |
33 | */ | |
34 | ||
35 | static unsigned int read_ledword(const unsigned char **in) | |
0f113f3e MC |
36 | { |
37 | const unsigned char *p = *in; | |
38 | unsigned int ret; | |
a158f8cf | 39 | |
cbeb0bfa TM |
40 | ret = (unsigned int)*p++; |
41 | ret |= (unsigned int)*p++ << 8; | |
42 | ret |= (unsigned int)*p++ << 16; | |
43 | ret |= (unsigned int)*p++ << 24; | |
0f113f3e MC |
44 | *in = p; |
45 | return ret; | |
46 | } | |
47 | ||
48 | /* | |
49 | * Read a BIGNUM in little endian format. The docs say that this should take | |
50 | * up bitlen/8 bytes. | |
a0156a92 DSH |
51 | */ |
52 | ||
53 | static int read_lebn(const unsigned char **in, unsigned int nbyte, BIGNUM **r) | |
0f113f3e | 54 | { |
85a4807f DSH |
55 | *r = BN_lebin2bn(*in, nbyte, NULL); |
56 | if (*r == NULL) | |
0f113f3e | 57 | return 0; |
85a4807f DSH |
58 | *in += nbyte; |
59 | return 1; | |
0f113f3e | 60 | } |
a0156a92 | 61 | |
f4e46b81 RL |
62 | /* |
63 | * Create an EVP_PKEY from a type specific key. | |
64 | * This takes ownership of |key|, as long as the |evp_type| is acceptable | |
65 | * (EVP_PKEY_RSA or EVP_PKEY_DSA), even if the resulting EVP_PKEY wasn't | |
66 | * created. | |
67 | */ | |
68 | #define isdss_to_evp_type(isdss) \ | |
69 | (isdss == 0 ? EVP_PKEY_RSA : isdss == 1 ? EVP_PKEY_DSA : EVP_PKEY_NONE) | |
70 | static EVP_PKEY *evp_pkey_new0_key(void *key, int evp_type) | |
71 | { | |
72 | EVP_PKEY *pkey = NULL; | |
73 | ||
74 | /* | |
75 | * It's assumed that if |key| is NULL, something went wrong elsewhere | |
76 | * and suitable errors are already reported. | |
77 | */ | |
78 | if (key == NULL) | |
79 | return NULL; | |
80 | ||
81 | if (!ossl_assert(evp_type == EVP_PKEY_RSA || evp_type == EVP_PKEY_DSA)) { | |
82 | ERR_raise(ERR_LIB_PEM, ERR_R_INTERNAL_ERROR); | |
83 | return NULL; | |
84 | } | |
85 | ||
86 | if ((pkey = EVP_PKEY_new()) != NULL) { | |
87 | switch (evp_type) { | |
88 | case EVP_PKEY_RSA: | |
89 | if (EVP_PKEY_set1_RSA(pkey, key)) | |
90 | break; | |
91 | EVP_PKEY_free(pkey); | |
92 | pkey = NULL; | |
93 | break; | |
94 | #ifndef OPENSSL_NO_DSA | |
95 | case EVP_PKEY_DSA: | |
96 | if (EVP_PKEY_set1_DSA(pkey, key)) | |
97 | break; | |
98 | EVP_PKEY_free(pkey); | |
99 | pkey = NULL; | |
100 | break; | |
101 | #endif | |
102 | } | |
103 | } | |
104 | ||
105 | switch (evp_type) { | |
106 | case EVP_PKEY_RSA: | |
107 | RSA_free(key); | |
108 | break; | |
109 | #ifndef OPENSSL_NO_DSA | |
110 | case EVP_PKEY_DSA: | |
111 | DSA_free(key); | |
112 | break; | |
113 | #endif | |
114 | } | |
115 | ||
116 | if (pkey == NULL) | |
117 | ERR_raise(ERR_LIB_PEM, ERR_R_MALLOC_FAILURE); | |
118 | return pkey; | |
119 | } | |
120 | ||
a0156a92 DSH |
121 | /* Convert private key blob to EVP_PKEY: RSA and DSA keys supported */ |
122 | ||
0f113f3e MC |
123 | # define MS_PUBLICKEYBLOB 0x6 |
124 | # define MS_PRIVATEKEYBLOB 0x7 | |
125 | # define MS_RSA1MAGIC 0x31415352L | |
126 | # define MS_RSA2MAGIC 0x32415352L | |
127 | # define MS_DSS1MAGIC 0x31535344L | |
128 | # define MS_DSS2MAGIC 0x32535344L | |
a0156a92 | 129 | |
0f113f3e MC |
130 | # define MS_KEYALG_RSA_KEYX 0xa400 |
131 | # define MS_KEYALG_DSS_SIGN 0x2200 | |
a0156a92 | 132 | |
0f113f3e MC |
133 | # define MS_KEYTYPE_KEYX 0x1 |
134 | # define MS_KEYTYPE_SIGN 0x2 | |
a0156a92 DSH |
135 | |
136 | /* The PVK file magic number: seems to spell out "bobsfile", who is Bob? */ | |
0f113f3e | 137 | # define MS_PVKMAGIC 0xb0b5f11eL |
a0156a92 | 138 | /* Salt length for PVK files */ |
0f113f3e | 139 | # define PVK_SALTLEN 0x10 |
5f57abe2 DSH |
140 | /* Maximum length in PVK header */ |
141 | # define PVK_MAX_KEYLEN 102400 | |
142 | /* Maximum salt length */ | |
143 | # define PVK_MAX_SALTLEN 10240 | |
a0156a92 | 144 | |
f4e46b81 RL |
145 | /* |
146 | * Read the MSBLOB header and get relevant data from it. | |
147 | * | |
148 | * |pisdss| and |pispub| have a double role, as they can be used for | |
149 | * discovery as well as to check the the blob meets expectations. | |
150 | * |*pisdss| is the indicator for whether the key is a DSA key or not. | |
151 | * |*pispub| is the indicator for whether the key is public or not. | |
152 | * In both cases, the following input values apply: | |
153 | * | |
154 | * 0 Expected to not be what the variable indicates. | |
155 | * 1 Expected to be what the variable indicates. | |
156 | * -1 No expectations, this function will assign 0 or 1 depending on | |
157 | * header data. | |
158 | */ | |
f55838f3 RL |
159 | int ossl_do_blob_header(const unsigned char **in, unsigned int length, |
160 | unsigned int *pmagic, unsigned int *pbitlen, | |
161 | int *pisdss, int *pispub) | |
0f113f3e MC |
162 | { |
163 | const unsigned char *p = *in; | |
a158f8cf | 164 | |
0f113f3e MC |
165 | if (length < 16) |
166 | return 0; | |
167 | /* bType */ | |
f4e46b81 RL |
168 | switch (*p) { |
169 | case MS_PUBLICKEYBLOB: | |
0f113f3e | 170 | if (*pispub == 0) { |
9311d0c4 | 171 | ERR_raise(ERR_LIB_PEM, PEM_R_EXPECTING_PRIVATE_KEY_BLOB); |
0f113f3e MC |
172 | return 0; |
173 | } | |
174 | *pispub = 1; | |
f4e46b81 RL |
175 | break; |
176 | ||
177 | case MS_PRIVATEKEYBLOB: | |
0f113f3e | 178 | if (*pispub == 1) { |
9311d0c4 | 179 | ERR_raise(ERR_LIB_PEM, PEM_R_EXPECTING_PUBLIC_KEY_BLOB); |
0f113f3e MC |
180 | return 0; |
181 | } | |
182 | *pispub = 0; | |
f4e46b81 RL |
183 | break; |
184 | ||
185 | default: | |
0f113f3e | 186 | return 0; |
a158f8cf | 187 | } |
0f113f3e MC |
188 | p++; |
189 | /* Version */ | |
190 | if (*p++ != 0x2) { | |
9311d0c4 | 191 | ERR_raise(ERR_LIB_PEM, PEM_R_BAD_VERSION_NUMBER); |
0f113f3e MC |
192 | return 0; |
193 | } | |
194 | /* Ignore reserved, aiKeyAlg */ | |
195 | p += 6; | |
196 | *pmagic = read_ledword(&p); | |
197 | *pbitlen = read_ledword(&p); | |
0f113f3e | 198 | |
f4e46b81 RL |
199 | /* Consistency check for private vs public */ |
200 | switch (*pmagic) { | |
0f113f3e | 201 | case MS_DSS1MAGIC: |
0f113f3e MC |
202 | case MS_RSA1MAGIC: |
203 | if (*pispub == 0) { | |
9311d0c4 | 204 | ERR_raise(ERR_LIB_PEM, PEM_R_EXPECTING_PRIVATE_KEY_BLOB); |
0f113f3e MC |
205 | return 0; |
206 | } | |
207 | break; | |
208 | ||
209 | case MS_DSS2MAGIC: | |
0f113f3e MC |
210 | case MS_RSA2MAGIC: |
211 | if (*pispub == 1) { | |
9311d0c4 | 212 | ERR_raise(ERR_LIB_PEM, PEM_R_EXPECTING_PUBLIC_KEY_BLOB); |
0f113f3e MC |
213 | return 0; |
214 | } | |
215 | break; | |
216 | ||
f4e46b81 RL |
217 | default: |
218 | ERR_raise(ERR_LIB_PEM, PEM_R_BAD_MAGIC_NUMBER); | |
219 | return -1; | |
220 | } | |
221 | ||
222 | /* Check that we got the expected type */ | |
223 | switch (*pmagic) { | |
224 | case MS_DSS1MAGIC: | |
225 | case MS_DSS2MAGIC: | |
226 | if (*pisdss == 0) { | |
227 | ERR_raise(ERR_LIB_PEM, PEM_R_EXPECTING_DSS_KEY_BLOB); | |
228 | return 0; | |
229 | } | |
230 | *pisdss = 1; | |
231 | break; | |
232 | case MS_RSA1MAGIC: | |
233 | case MS_RSA2MAGIC: | |
234 | if (*pisdss == 1) { | |
235 | ERR_raise(ERR_LIB_PEM, PEM_R_EXPECTING_RSA_KEY_BLOB); | |
236 | return 0; | |
237 | } | |
238 | *pisdss = 0; | |
239 | break; | |
240 | ||
0f113f3e | 241 | default: |
9311d0c4 | 242 | ERR_raise(ERR_LIB_PEM, PEM_R_BAD_MAGIC_NUMBER); |
0f113f3e MC |
243 | return -1; |
244 | } | |
245 | *in = p; | |
246 | return 1; | |
247 | } | |
a0156a92 | 248 | |
f4e46b81 | 249 | unsigned int ossl_blob_length(unsigned bitlen, int isdss, int ispub) |
0f113f3e | 250 | { |
a158f8cf RL |
251 | unsigned int nbyte = (bitlen + 7) >> 3; |
252 | unsigned int hnbyte = (bitlen + 15) >> 4; | |
253 | ||
0f113f3e MC |
254 | if (isdss) { |
255 | ||
256 | /* | |
257 | * Expected length: 20 for q + 3 components bitlen each + 24 for seed | |
258 | * structure. | |
259 | */ | |
260 | if (ispub) | |
261 | return 44 + 3 * nbyte; | |
262 | /* | |
263 | * Expected length: 20 for q, priv, 2 bitlen components + 24 for seed | |
264 | * structure. | |
265 | */ | |
266 | else | |
267 | return 64 + 2 * nbyte; | |
268 | } else { | |
269 | /* Expected length: 4 for 'e' + 'n' */ | |
270 | if (ispub) | |
271 | return 4 + nbyte; | |
272 | else | |
273 | /* | |
274 | * Expected length: 4 for 'e' and 7 other components. 2 | |
275 | * components are bitlen size, 5 are bitlen/2 | |
276 | */ | |
277 | return 4 + 2 * nbyte + 5 * hnbyte; | |
278 | } | |
279 | ||
280 | } | |
a0156a92 | 281 | |
f4e46b81 RL |
282 | static void *do_b2i_key(const unsigned char **in, unsigned int length, |
283 | int *isdss, int *ispub) | |
0f113f3e MC |
284 | { |
285 | const unsigned char *p = *in; | |
286 | unsigned int bitlen, magic; | |
f4e46b81 | 287 | void *key = NULL; |
a158f8cf | 288 | |
f4e46b81 | 289 | if (ossl_do_blob_header(&p, length, &magic, &bitlen, isdss, ispub) <= 0) { |
9311d0c4 | 290 | ERR_raise(ERR_LIB_PEM, PEM_R_KEYBLOB_HEADER_PARSE_ERROR); |
0f113f3e MC |
291 | return NULL; |
292 | } | |
293 | length -= 16; | |
f4e46b81 | 294 | if (length < ossl_blob_length(bitlen, *isdss, *ispub)) { |
9311d0c4 | 295 | ERR_raise(ERR_LIB_PEM, PEM_R_KEYBLOB_TOO_SHORT); |
0f113f3e MC |
296 | return NULL; |
297 | } | |
f4e46b81 RL |
298 | if (!*isdss) |
299 | key = ossl_b2i_RSA_after_header(&p, bitlen, *ispub); | |
a158f8cf RL |
300 | #ifndef OPENSSL_NO_DSA |
301 | else | |
f4e46b81 | 302 | key = ossl_b2i_DSA_after_header(&p, bitlen, *ispub); |
a158f8cf RL |
303 | #endif |
304 | ||
f4e46b81 RL |
305 | if (key == NULL) { |
306 | ERR_raise(ERR_LIB_PEM, PEM_R_UNSUPPORTED_PUBLIC_KEY_TYPE); | |
307 | return NULL; | |
308 | } | |
309 | ||
310 | return key; | |
311 | } | |
312 | ||
313 | EVP_PKEY *ossl_b2i(const unsigned char **in, unsigned int length, int *ispub) | |
314 | { | |
315 | int isdss = -1; | |
316 | void *key = do_b2i_key(in, length, &isdss, ispub); | |
317 | ||
318 | return evp_pkey_new0_key(key, isdss_to_evp_type(isdss)); | |
0f113f3e | 319 | } |
a0156a92 | 320 | |
413835f5 | 321 | EVP_PKEY *ossl_b2i_bio(BIO *in, int *ispub) |
0f113f3e MC |
322 | { |
323 | const unsigned char *p; | |
324 | unsigned char hdr_buf[16], *buf = NULL; | |
325 | unsigned int bitlen, magic, length; | |
326 | int isdss; | |
f4e46b81 RL |
327 | void *key = NULL; |
328 | EVP_PKEY *pkey = NULL; | |
a158f8cf | 329 | |
0f113f3e | 330 | if (BIO_read(in, hdr_buf, 16) != 16) { |
9311d0c4 | 331 | ERR_raise(ERR_LIB_PEM, PEM_R_KEYBLOB_TOO_SHORT); |
0f113f3e MC |
332 | return NULL; |
333 | } | |
334 | p = hdr_buf; | |
413835f5 | 335 | if (ossl_do_blob_header(&p, 16, &magic, &bitlen, &isdss, ispub) <= 0) |
0f113f3e MC |
336 | return NULL; |
337 | ||
f4e46b81 | 338 | length = ossl_blob_length(bitlen, isdss, *ispub); |
66bcba14 | 339 | if (length > BLOB_MAX_LENGTH) { |
9311d0c4 | 340 | ERR_raise(ERR_LIB_PEM, PEM_R_HEADER_TOO_LONG); |
66bcba14 DSH |
341 | return NULL; |
342 | } | |
0f113f3e | 343 | buf = OPENSSL_malloc(length); |
90945fa3 | 344 | if (buf == NULL) { |
9311d0c4 | 345 | ERR_raise(ERR_LIB_PEM, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
346 | goto err; |
347 | } | |
348 | p = buf; | |
349 | if (BIO_read(in, buf, length) != (int)length) { | |
9311d0c4 | 350 | ERR_raise(ERR_LIB_PEM, PEM_R_KEYBLOB_TOO_SHORT); |
0f113f3e MC |
351 | goto err; |
352 | } | |
353 | ||
a158f8cf | 354 | if (!isdss) |
f4e46b81 | 355 | key = ossl_b2i_RSA_after_header(&p, bitlen, *ispub); |
a158f8cf RL |
356 | #ifndef OPENSSL_NO_DSA |
357 | else | |
f4e46b81 | 358 | key = ossl_b2i_DSA_after_header(&p, bitlen, *ispub); |
a158f8cf RL |
359 | #endif |
360 | ||
f4e46b81 | 361 | if (key == NULL) { |
a158f8cf | 362 | ERR_raise(ERR_LIB_PEM, PEM_R_UNSUPPORTED_PUBLIC_KEY_TYPE); |
f4e46b81 RL |
363 | goto err; |
364 | } | |
0f113f3e | 365 | |
f4e46b81 | 366 | pkey = evp_pkey_new0_key(key, isdss_to_evp_type(isdss)); |
0f113f3e | 367 | err: |
b548a1f1 | 368 | OPENSSL_free(buf); |
f4e46b81 | 369 | return pkey; |
0f113f3e | 370 | } |
a0156a92 | 371 | |
a158f8cf | 372 | #ifndef OPENSSL_NO_DSA |
f4e46b81 RL |
373 | DSA *ossl_b2i_DSA_after_header(const unsigned char **in, unsigned int bitlen, |
374 | int ispub) | |
0f113f3e MC |
375 | { |
376 | const unsigned char *p = *in; | |
0f113f3e MC |
377 | DSA *dsa = NULL; |
378 | BN_CTX *ctx = NULL; | |
1258396d MC |
379 | BIGNUM *pbn = NULL, *qbn = NULL, *gbn = NULL, *priv_key = NULL; |
380 | BIGNUM *pub_key = NULL; | |
a158f8cf | 381 | unsigned int nbyte = (bitlen + 7) >> 3; |
0f113f3e MC |
382 | |
383 | dsa = DSA_new(); | |
f4e46b81 | 384 | if (dsa == NULL) |
0f113f3e | 385 | goto memerr; |
1258396d | 386 | if (!read_lebn(&p, nbyte, &pbn)) |
0f113f3e | 387 | goto memerr; |
1258396d MC |
388 | |
389 | if (!read_lebn(&p, 20, &qbn)) | |
0f113f3e | 390 | goto memerr; |
1258396d MC |
391 | |
392 | if (!read_lebn(&p, nbyte, &gbn)) | |
0f113f3e | 393 | goto memerr; |
1258396d | 394 | |
0f113f3e | 395 | if (ispub) { |
1258396d | 396 | if (!read_lebn(&p, nbyte, &pub_key)) |
0f113f3e MC |
397 | goto memerr; |
398 | } else { | |
1258396d | 399 | if (!read_lebn(&p, 20, &priv_key)) |
0f113f3e | 400 | goto memerr; |
1258396d | 401 | |
724339ff CPG |
402 | /* Set constant time flag before public key calculation */ |
403 | BN_set_flags(priv_key, BN_FLG_CONSTTIME); | |
404 | ||
0f113f3e | 405 | /* Calculate public key */ |
1258396d MC |
406 | pub_key = BN_new(); |
407 | if (pub_key == NULL) | |
0f113f3e | 408 | goto memerr; |
75ebbd9a | 409 | if ((ctx = BN_CTX_new()) == NULL) |
0f113f3e MC |
410 | goto memerr; |
411 | ||
1258396d | 412 | if (!BN_mod_exp(pub_key, gbn, priv_key, pbn, ctx)) |
0f113f3e | 413 | goto memerr; |
1258396d | 414 | |
0f113f3e | 415 | BN_CTX_free(ctx); |
d288d7fc | 416 | ctx = NULL; |
0f113f3e | 417 | } |
1258396d MC |
418 | if (!DSA_set0_pqg(dsa, pbn, qbn, gbn)) |
419 | goto memerr; | |
420 | pbn = qbn = gbn = NULL; | |
421 | if (!DSA_set0_key(dsa, pub_key, priv_key)) | |
422 | goto memerr; | |
d288d7fc | 423 | pub_key = priv_key = NULL; |
0f113f3e | 424 | |
0f113f3e | 425 | *in = p; |
f4e46b81 | 426 | return dsa; |
0f113f3e MC |
427 | |
428 | memerr: | |
9311d0c4 | 429 | ERR_raise(ERR_LIB_PEM, ERR_R_MALLOC_FAILURE); |
d6407083 | 430 | DSA_free(dsa); |
1258396d MC |
431 | BN_free(pbn); |
432 | BN_free(qbn); | |
433 | BN_free(gbn); | |
434 | BN_free(pub_key); | |
435 | BN_free(priv_key); | |
23a1d5e9 | 436 | BN_CTX_free(ctx); |
0f113f3e MC |
437 | return NULL; |
438 | } | |
a158f8cf | 439 | #endif |
a0156a92 | 440 | |
f4e46b81 RL |
441 | RSA *ossl_b2i_RSA_after_header(const unsigned char **in, unsigned int bitlen, |
442 | int ispub) | |
0f113f3e | 443 | { |
9862e9aa | 444 | const unsigned char *pin = *in; |
9862e9aa | 445 | BIGNUM *e = NULL, *n = NULL, *d = NULL; |
204cf940 | 446 | BIGNUM *p = NULL, *q = NULL, *dmp1 = NULL, *dmq1 = NULL, *iqmp = NULL; |
0f113f3e | 447 | RSA *rsa = NULL; |
a158f8cf RL |
448 | unsigned int nbyte = (bitlen + 7) >> 3; |
449 | unsigned int hnbyte = (bitlen + 15) >> 4; | |
450 | ||
0f113f3e | 451 | rsa = RSA_new(); |
f4e46b81 | 452 | if (rsa == NULL) |
0f113f3e | 453 | goto memerr; |
9862e9aa RL |
454 | e = BN_new(); |
455 | if (e == NULL) | |
0f113f3e | 456 | goto memerr; |
9862e9aa | 457 | if (!BN_set_word(e, read_ledword(&pin))) |
0f113f3e | 458 | goto memerr; |
9862e9aa | 459 | if (!read_lebn(&pin, nbyte, &n)) |
0f113f3e MC |
460 | goto memerr; |
461 | if (!ispub) { | |
9862e9aa | 462 | if (!read_lebn(&pin, hnbyte, &p)) |
0f113f3e | 463 | goto memerr; |
9862e9aa | 464 | if (!read_lebn(&pin, hnbyte, &q)) |
0f113f3e | 465 | goto memerr; |
9862e9aa | 466 | if (!read_lebn(&pin, hnbyte, &dmp1)) |
0f113f3e | 467 | goto memerr; |
9862e9aa | 468 | if (!read_lebn(&pin, hnbyte, &dmq1)) |
0f113f3e | 469 | goto memerr; |
9862e9aa | 470 | if (!read_lebn(&pin, hnbyte, &iqmp)) |
0f113f3e | 471 | goto memerr; |
9862e9aa | 472 | if (!read_lebn(&pin, nbyte, &d)) |
0f113f3e | 473 | goto memerr; |
d288d7fc BE |
474 | if (!RSA_set0_factors(rsa, p, q)) |
475 | goto memerr; | |
476 | p = q = NULL; | |
477 | if (!RSA_set0_crt_params(rsa, dmp1, dmq1, iqmp)) | |
478 | goto memerr; | |
479 | dmp1 = dmq1 = iqmp = NULL; | |
0f113f3e | 480 | } |
d288d7fc BE |
481 | if (!RSA_set0_key(rsa, n, e, d)) |
482 | goto memerr; | |
483 | n = e = d = NULL; | |
0f113f3e | 484 | |
9862e9aa | 485 | *in = pin; |
f4e46b81 | 486 | return rsa; |
0f113f3e | 487 | memerr: |
9311d0c4 | 488 | ERR_raise(ERR_LIB_PEM, ERR_R_MALLOC_FAILURE); |
204cf940 MC |
489 | BN_free(e); |
490 | BN_free(n); | |
491 | BN_free(p); | |
492 | BN_free(q); | |
493 | BN_free(dmp1); | |
494 | BN_free(dmq1); | |
495 | BN_free(iqmp); | |
496 | BN_free(d); | |
d6407083 | 497 | RSA_free(rsa); |
0f113f3e MC |
498 | return NULL; |
499 | } | |
a0156a92 DSH |
500 | |
501 | EVP_PKEY *b2i_PrivateKey(const unsigned char **in, long length) | |
0f113f3e | 502 | { |
413835f5 RL |
503 | int ispub = 0; |
504 | ||
505 | return ossl_b2i(in, length, &ispub); | |
0f113f3e | 506 | } |
a0156a92 DSH |
507 | |
508 | EVP_PKEY *b2i_PublicKey(const unsigned char **in, long length) | |
0f113f3e | 509 | { |
413835f5 RL |
510 | int ispub = 1; |
511 | ||
512 | return ossl_b2i(in, length, &ispub); | |
0f113f3e | 513 | } |
a0156a92 DSH |
514 | |
515 | EVP_PKEY *b2i_PrivateKey_bio(BIO *in) | |
0f113f3e | 516 | { |
413835f5 RL |
517 | int ispub = 0; |
518 | ||
519 | return ossl_b2i_bio(in, &ispub); | |
0f113f3e | 520 | } |
a0156a92 DSH |
521 | |
522 | EVP_PKEY *b2i_PublicKey_bio(BIO *in) | |
0f113f3e | 523 | { |
413835f5 RL |
524 | int ispub = 1; |
525 | ||
526 | return ossl_b2i_bio(in, &ispub); | |
0f113f3e | 527 | } |
a0156a92 DSH |
528 | |
529 | static void write_ledword(unsigned char **out, unsigned int dw) | |
0f113f3e MC |
530 | { |
531 | unsigned char *p = *out; | |
a158f8cf | 532 | |
0f113f3e MC |
533 | *p++ = dw & 0xff; |
534 | *p++ = (dw >> 8) & 0xff; | |
535 | *p++ = (dw >> 16) & 0xff; | |
536 | *p++ = (dw >> 24) & 0xff; | |
537 | *out = p; | |
538 | } | |
a0156a92 DSH |
539 | |
540 | static void write_lebn(unsigned char **out, const BIGNUM *bn, int len) | |
0f113f3e | 541 | { |
85a4807f DSH |
542 | BN_bn2lebinpad(bn, *out, len); |
543 | *out += len; | |
0f113f3e | 544 | } |
a0156a92 | 545 | |
7bc0fdd3 MC |
546 | static int check_bitlen_rsa(const RSA *rsa, int ispub, unsigned int *magic); |
547 | static void write_rsa(unsigned char **out, const RSA *rsa, int ispub); | |
a158f8cf RL |
548 | |
549 | #ifndef OPENSSL_NO_DSA | |
7bc0fdd3 MC |
550 | static int check_bitlen_dsa(const DSA *dsa, int ispub, unsigned int *magic); |
551 | static void write_dsa(unsigned char **out, const DSA *dsa, int ispub); | |
a158f8cf | 552 | #endif |
0f113f3e | 553 | |
de0799b0 | 554 | static int do_i2b(unsigned char **out, const EVP_PKEY *pk, int ispub) |
0f113f3e MC |
555 | { |
556 | unsigned char *p; | |
a158f8cf | 557 | unsigned int bitlen = 0, magic = 0, keyalg = 0; |
e77c13f8 | 558 | int outlen = -1, noinc = 0; |
a158f8cf | 559 | |
f4e46b81 | 560 | if (EVP_PKEY_is_a(pk, "RSA")) { |
3aeb9348 | 561 | bitlen = check_bitlen_rsa(EVP_PKEY_get0_RSA(pk), ispub, &magic); |
0f113f3e | 562 | keyalg = MS_KEYALG_RSA_KEYX; |
a158f8cf | 563 | #ifndef OPENSSL_NO_DSA |
f4e46b81 | 564 | } else if (EVP_PKEY_is_a(pk, "DSA")) { |
a158f8cf RL |
565 | bitlen = check_bitlen_dsa(EVP_PKEY_get0_DSA(pk), ispub, &magic); |
566 | keyalg = MS_KEYALG_DSS_SIGN; | |
567 | #endif | |
568 | } | |
e77c13f8 RL |
569 | if (bitlen == 0) { |
570 | goto end; | |
571 | } | |
f4e46b81 RL |
572 | outlen = 16 |
573 | + ossl_blob_length(bitlen, keyalg == MS_KEYALG_DSS_SIGN ? 1 : 0, ispub); | |
0f113f3e | 574 | if (out == NULL) |
e77c13f8 | 575 | goto end; |
0f113f3e MC |
576 | if (*out) |
577 | p = *out; | |
578 | else { | |
cdb10bae | 579 | if ((p = OPENSSL_malloc(outlen)) == NULL) { |
9311d0c4 | 580 | ERR_raise(ERR_LIB_PEM, ERR_R_MALLOC_FAILURE); |
e77c13f8 RL |
581 | outlen = -1; |
582 | goto end; | |
cdb10bae | 583 | } |
0f113f3e MC |
584 | *out = p; |
585 | noinc = 1; | |
586 | } | |
587 | if (ispub) | |
588 | *p++ = MS_PUBLICKEYBLOB; | |
589 | else | |
590 | *p++ = MS_PRIVATEKEYBLOB; | |
591 | *p++ = 0x2; | |
592 | *p++ = 0; | |
593 | *p++ = 0; | |
594 | write_ledword(&p, keyalg); | |
595 | write_ledword(&p, magic); | |
596 | write_ledword(&p, bitlen); | |
a158f8cf | 597 | if (keyalg == MS_KEYALG_RSA_KEYX) |
3aeb9348 | 598 | write_rsa(&p, EVP_PKEY_get0_RSA(pk), ispub); |
a158f8cf RL |
599 | #ifndef OPENSSL_NO_DSA |
600 | else | |
601 | write_dsa(&p, EVP_PKEY_get0_DSA(pk), ispub); | |
602 | #endif | |
0f113f3e MC |
603 | if (!noinc) |
604 | *out += outlen; | |
e77c13f8 | 605 | end: |
0f113f3e MC |
606 | return outlen; |
607 | } | |
a0156a92 | 608 | |
de0799b0 | 609 | static int do_i2b_bio(BIO *out, const EVP_PKEY *pk, int ispub) |
0f113f3e MC |
610 | { |
611 | unsigned char *tmp = NULL; | |
612 | int outlen, wrlen; | |
a158f8cf | 613 | |
0f113f3e MC |
614 | outlen = do_i2b(&tmp, pk, ispub); |
615 | if (outlen < 0) | |
616 | return -1; | |
617 | wrlen = BIO_write(out, tmp, outlen); | |
618 | OPENSSL_free(tmp); | |
619 | if (wrlen == outlen) | |
620 | return outlen; | |
621 | return -1; | |
622 | } | |
a0156a92 | 623 | |
7bc0fdd3 | 624 | static int check_bitlen_rsa(const RSA *rsa, int ispub, unsigned int *pmagic) |
0f113f3e MC |
625 | { |
626 | int nbyte, hnbyte, bitlen; | |
2ac6115d | 627 | const BIGNUM *e; |
9862e9aa | 628 | |
1e7c159d | 629 | RSA_get0_key(rsa, NULL, &e, NULL); |
9862e9aa | 630 | if (BN_num_bits(e) > 32) |
0f113f3e | 631 | goto badkey; |
9862e9aa RL |
632 | bitlen = RSA_bits(rsa); |
633 | nbyte = RSA_size(rsa); | |
634 | hnbyte = (bitlen + 15) >> 4; | |
0f113f3e MC |
635 | if (ispub) { |
636 | *pmagic = MS_RSA1MAGIC; | |
637 | return bitlen; | |
638 | } else { | |
2ac6115d | 639 | const BIGNUM *d, *p, *q, *iqmp, *dmp1, *dmq1; |
9862e9aa | 640 | |
0f113f3e | 641 | *pmagic = MS_RSA2MAGIC; |
9862e9aa | 642 | |
0f113f3e MC |
643 | /* |
644 | * For private key each component must fit within nbyte or hnbyte. | |
645 | */ | |
9862e9aa RL |
646 | RSA_get0_key(rsa, NULL, NULL, &d); |
647 | if (BN_num_bytes(d) > nbyte) | |
0f113f3e | 648 | goto badkey; |
9862e9aa RL |
649 | RSA_get0_factors(rsa, &p, &q); |
650 | RSA_get0_crt_params(rsa, &dmp1, &dmq1, &iqmp); | |
651 | if ((BN_num_bytes(iqmp) > hnbyte) | |
652 | || (BN_num_bytes(p) > hnbyte) | |
653 | || (BN_num_bytes(q) > hnbyte) | |
654 | || (BN_num_bytes(dmp1) > hnbyte) | |
655 | || (BN_num_bytes(dmq1) > hnbyte)) | |
0f113f3e MC |
656 | goto badkey; |
657 | } | |
658 | return bitlen; | |
659 | badkey: | |
9311d0c4 | 660 | ERR_raise(ERR_LIB_PEM, PEM_R_UNSUPPORTED_KEY_COMPONENTS); |
0f113f3e MC |
661 | return 0; |
662 | } | |
a0156a92 | 663 | |
7bc0fdd3 | 664 | static void write_rsa(unsigned char **out, const RSA *rsa, int ispub) |
0f113f3e MC |
665 | { |
666 | int nbyte, hnbyte; | |
2ac6115d | 667 | const BIGNUM *n, *d, *e, *p, *q, *iqmp, *dmp1, *dmq1; |
9862e9aa RL |
668 | |
669 | nbyte = RSA_size(rsa); | |
670 | hnbyte = (RSA_bits(rsa) + 15) >> 4; | |
1e7c159d | 671 | RSA_get0_key(rsa, &n, &e, &d); |
9862e9aa | 672 | write_lebn(out, e, 4); |
159f6e7e | 673 | write_lebn(out, n, nbyte); |
0f113f3e MC |
674 | if (ispub) |
675 | return; | |
9862e9aa RL |
676 | RSA_get0_factors(rsa, &p, &q); |
677 | RSA_get0_crt_params(rsa, &dmp1, &dmq1, &iqmp); | |
678 | write_lebn(out, p, hnbyte); | |
679 | write_lebn(out, q, hnbyte); | |
680 | write_lebn(out, dmp1, hnbyte); | |
681 | write_lebn(out, dmq1, hnbyte); | |
682 | write_lebn(out, iqmp, hnbyte); | |
683 | write_lebn(out, d, nbyte); | |
0f113f3e MC |
684 | } |
685 | ||
a158f8cf | 686 | #ifndef OPENSSL_NO_DSA |
7bc0fdd3 | 687 | static int check_bitlen_dsa(const DSA *dsa, int ispub, unsigned int *pmagic) |
a158f8cf RL |
688 | { |
689 | int bitlen; | |
690 | const BIGNUM *p = NULL, *q = NULL, *g = NULL; | |
691 | const BIGNUM *pub_key = NULL, *priv_key = NULL; | |
692 | ||
693 | DSA_get0_pqg(dsa, &p, &q, &g); | |
694 | DSA_get0_key(dsa, &pub_key, &priv_key); | |
695 | bitlen = BN_num_bits(p); | |
696 | if ((bitlen & 7) || (BN_num_bits(q) != 160) | |
697 | || (BN_num_bits(g) > bitlen)) | |
698 | goto badkey; | |
699 | if (ispub) { | |
700 | if (BN_num_bits(pub_key) > bitlen) | |
701 | goto badkey; | |
702 | *pmagic = MS_DSS1MAGIC; | |
703 | } else { | |
704 | if (BN_num_bits(priv_key) > 160) | |
705 | goto badkey; | |
706 | *pmagic = MS_DSS2MAGIC; | |
707 | } | |
708 | ||
709 | return bitlen; | |
710 | badkey: | |
711 | ERR_raise(ERR_LIB_PEM, PEM_R_UNSUPPORTED_KEY_COMPONENTS); | |
712 | return 0; | |
713 | } | |
714 | ||
7bc0fdd3 | 715 | static void write_dsa(unsigned char **out, const DSA *dsa, int ispub) |
0f113f3e MC |
716 | { |
717 | int nbyte; | |
2ac6115d RL |
718 | const BIGNUM *p = NULL, *q = NULL, *g = NULL; |
719 | const BIGNUM *pub_key = NULL, *priv_key = NULL; | |
6e9fa57c MC |
720 | |
721 | DSA_get0_pqg(dsa, &p, &q, &g); | |
722 | DSA_get0_key(dsa, &pub_key, &priv_key); | |
723 | nbyte = BN_num_bytes(p); | |
724 | write_lebn(out, p, nbyte); | |
725 | write_lebn(out, q, 20); | |
726 | write_lebn(out, g, nbyte); | |
0f113f3e | 727 | if (ispub) |
6e9fa57c | 728 | write_lebn(out, pub_key, nbyte); |
0f113f3e | 729 | else |
6e9fa57c | 730 | write_lebn(out, priv_key, 20); |
0f113f3e MC |
731 | /* Set "invalid" for seed structure values */ |
732 | memset(*out, 0xff, 24); | |
733 | *out += 24; | |
734 | return; | |
735 | } | |
a158f8cf | 736 | #endif |
a0156a92 | 737 | |
de0799b0 | 738 | int i2b_PrivateKey_bio(BIO *out, const EVP_PKEY *pk) |
0f113f3e MC |
739 | { |
740 | return do_i2b_bio(out, pk, 0); | |
741 | } | |
a0156a92 | 742 | |
de0799b0 | 743 | int i2b_PublicKey_bio(BIO *out, const EVP_PKEY *pk) |
0f113f3e MC |
744 | { |
745 | return do_i2b_bio(out, pk, 1); | |
746 | } | |
a0156a92 | 747 | |
f55838f3 RL |
748 | int ossl_do_PVK_header(const unsigned char **in, unsigned int length, |
749 | int skip_magic, | |
750 | unsigned int *psaltlen, unsigned int *pkeylen) | |
0f113f3e MC |
751 | { |
752 | const unsigned char *p = *in; | |
753 | unsigned int pvk_magic, is_encrypted; | |
12a765a5 | 754 | |
0f113f3e MC |
755 | if (skip_magic) { |
756 | if (length < 20) { | |
9311d0c4 | 757 | ERR_raise(ERR_LIB_PEM, PEM_R_PVK_TOO_SHORT); |
0f113f3e MC |
758 | return 0; |
759 | } | |
0f113f3e MC |
760 | } else { |
761 | if (length < 24) { | |
9311d0c4 | 762 | ERR_raise(ERR_LIB_PEM, PEM_R_PVK_TOO_SHORT); |
0f113f3e MC |
763 | return 0; |
764 | } | |
0f113f3e MC |
765 | pvk_magic = read_ledword(&p); |
766 | if (pvk_magic != MS_PVKMAGIC) { | |
9311d0c4 | 767 | ERR_raise(ERR_LIB_PEM, PEM_R_BAD_MAGIC_NUMBER); |
0f113f3e MC |
768 | return 0; |
769 | } | |
770 | } | |
771 | /* Skip reserved */ | |
772 | p += 4; | |
773 | /* | |
774 | * keytype = | |
775 | */ read_ledword(&p); | |
776 | is_encrypted = read_ledword(&p); | |
777 | *psaltlen = read_ledword(&p); | |
778 | *pkeylen = read_ledword(&p); | |
779 | ||
5f57abe2 DSH |
780 | if (*pkeylen > PVK_MAX_KEYLEN || *psaltlen > PVK_MAX_SALTLEN) |
781 | return 0; | |
782 | ||
12a765a5 | 783 | if (is_encrypted && *psaltlen == 0) { |
9311d0c4 | 784 | ERR_raise(ERR_LIB_PEM, PEM_R_INCONSISTENT_HEADER); |
0f113f3e MC |
785 | return 0; |
786 | } | |
787 | ||
788 | *in = p; | |
789 | return 1; | |
790 | } | |
791 | ||
a158f8cf | 792 | #ifndef OPENSSL_NO_RC4 |
0f113f3e MC |
793 | static int derive_pvk_key(unsigned char *key, |
794 | const unsigned char *salt, unsigned int saltlen, | |
795 | const unsigned char *pass, int passlen) | |
796 | { | |
3cb9fd97 | 797 | EVP_MD_CTX *mctx = EVP_MD_CTX_new(); |
0f113f3e | 798 | int rv = 1; |
a158f8cf | 799 | |
6e59a892 RL |
800 | if (mctx == NULL |
801 | || !EVP_DigestInit_ex(mctx, EVP_sha1(), NULL) | |
802 | || !EVP_DigestUpdate(mctx, salt, saltlen) | |
803 | || !EVP_DigestUpdate(mctx, pass, passlen) | |
804 | || !EVP_DigestFinal_ex(mctx, key, NULL)) | |
0f113f3e MC |
805 | rv = 0; |
806 | ||
bfb0641f | 807 | EVP_MD_CTX_free(mctx); |
0f113f3e MC |
808 | return rv; |
809 | } | |
a158f8cf | 810 | #endif |
a0156a92 | 811 | |
f4e46b81 | 812 | static void *do_PVK_body_key(const unsigned char **in, |
0f113f3e | 813 | unsigned int saltlen, unsigned int keylen, |
f4e46b81 RL |
814 | pem_password_cb *cb, void *u, |
815 | int *isdss, int *ispub) | |
0f113f3e | 816 | { |
0f113f3e | 817 | const unsigned char *p = *in; |
a158f8cf | 818 | unsigned char *enctmp = NULL; |
0239283d | 819 | unsigned char keybuf[20]; |
f4e46b81 | 820 | void *key = NULL; |
25aaa98a | 821 | |
846ec07d | 822 | EVP_CIPHER_CTX *cctx = EVP_CIPHER_CTX_new(); |
0f113f3e | 823 | if (saltlen) { |
a158f8cf RL |
824 | #ifndef OPENSSL_NO_RC4 |
825 | unsigned int magic; | |
0f113f3e | 826 | char psbuf[PEM_BUFSIZE]; |
0f113f3e | 827 | int enctmplen, inlen; |
a158f8cf RL |
828 | unsigned char *q; |
829 | ||
0f113f3e MC |
830 | if (cb) |
831 | inlen = cb(psbuf, PEM_BUFSIZE, 0, u); | |
832 | else | |
833 | inlen = PEM_def_callback(psbuf, PEM_BUFSIZE, 0, u); | |
c82c3462 | 834 | if (inlen < 0) { |
9311d0c4 | 835 | ERR_raise(ERR_LIB_PEM, PEM_R_BAD_PASSWORD_READ); |
3f6c7691 | 836 | goto err; |
0f113f3e MC |
837 | } |
838 | enctmp = OPENSSL_malloc(keylen + 8); | |
90945fa3 | 839 | if (enctmp == NULL) { |
9311d0c4 | 840 | ERR_raise(ERR_LIB_PEM, ERR_R_MALLOC_FAILURE); |
3f6c7691 | 841 | goto err; |
0f113f3e MC |
842 | } |
843 | if (!derive_pvk_key(keybuf, p, saltlen, | |
844 | (unsigned char *)psbuf, inlen)) | |
3f6c7691 | 845 | goto err; |
0f113f3e MC |
846 | p += saltlen; |
847 | /* Copy BLOBHEADER across, decrypt rest */ | |
848 | memcpy(enctmp, p, 8); | |
849 | p += 8; | |
850 | if (keylen < 8) { | |
9311d0c4 | 851 | ERR_raise(ERR_LIB_PEM, PEM_R_PVK_TOO_SHORT); |
3f6c7691 | 852 | goto err; |
0f113f3e MC |
853 | } |
854 | inlen = keylen - 8; | |
855 | q = enctmp + 8; | |
846ec07d | 856 | if (!EVP_DecryptInit_ex(cctx, EVP_rc4(), NULL, keybuf, NULL)) |
0f113f3e | 857 | goto err; |
846ec07d | 858 | if (!EVP_DecryptUpdate(cctx, q, &enctmplen, p, inlen)) |
0f113f3e | 859 | goto err; |
846ec07d | 860 | if (!EVP_DecryptFinal_ex(cctx, q + enctmplen, &enctmplen)) |
0f113f3e MC |
861 | goto err; |
862 | magic = read_ledword((const unsigned char **)&q); | |
863 | if (magic != MS_RSA2MAGIC && magic != MS_DSS2MAGIC) { | |
864 | q = enctmp + 8; | |
865 | memset(keybuf + 5, 0, 11); | |
846ec07d | 866 | if (!EVP_DecryptInit_ex(cctx, EVP_rc4(), NULL, keybuf, NULL)) |
0f113f3e | 867 | goto err; |
846ec07d | 868 | if (!EVP_DecryptUpdate(cctx, q, &enctmplen, p, inlen)) |
0f113f3e | 869 | goto err; |
846ec07d | 870 | if (!EVP_DecryptFinal_ex(cctx, q + enctmplen, &enctmplen)) |
0f113f3e MC |
871 | goto err; |
872 | magic = read_ledword((const unsigned char **)&q); | |
873 | if (magic != MS_RSA2MAGIC && magic != MS_DSS2MAGIC) { | |
9311d0c4 | 874 | ERR_raise(ERR_LIB_PEM, PEM_R_BAD_DECRYPT); |
0f113f3e MC |
875 | goto err; |
876 | } | |
0239283d | 877 | } |
0f113f3e | 878 | p = enctmp; |
a158f8cf RL |
879 | #else |
880 | ERR_raise(ERR_LIB_PEM, PEM_R_UNSUPPORTED_CIPHER); | |
881 | goto err; | |
882 | #endif | |
0f113f3e MC |
883 | } |
884 | ||
f4e46b81 | 885 | key = do_b2i_key(&p, keylen, isdss, ispub); |
0f113f3e | 886 | err: |
846ec07d | 887 | EVP_CIPHER_CTX_free(cctx); |
0239283d SL |
888 | if (enctmp != NULL) { |
889 | OPENSSL_cleanse(keybuf, sizeof(keybuf)); | |
890 | OPENSSL_free(enctmp); | |
891 | } | |
f4e46b81 | 892 | return key; |
0f113f3e | 893 | } |
a0156a92 | 894 | |
f4e46b81 RL |
895 | static void *do_PVK_key_bio(BIO *in, pem_password_cb *cb, void *u, |
896 | int *isdss, int *ispub) | |
0f113f3e MC |
897 | { |
898 | unsigned char pvk_hdr[24], *buf = NULL; | |
899 | const unsigned char *p; | |
900 | int buflen; | |
f4e46b81 | 901 | void *key = NULL; |
0f113f3e | 902 | unsigned int saltlen, keylen; |
a158f8cf | 903 | |
0f113f3e | 904 | if (BIO_read(in, pvk_hdr, 24) != 24) { |
9311d0c4 | 905 | ERR_raise(ERR_LIB_PEM, PEM_R_PVK_DATA_TOO_SHORT); |
0f113f3e MC |
906 | return NULL; |
907 | } | |
908 | p = pvk_hdr; | |
909 | ||
f55838f3 | 910 | if (!ossl_do_PVK_header(&p, 24, 0, &saltlen, &keylen)) |
0f113f3e MC |
911 | return 0; |
912 | buflen = (int)keylen + saltlen; | |
913 | buf = OPENSSL_malloc(buflen); | |
90945fa3 | 914 | if (buf == NULL) { |
9311d0c4 | 915 | ERR_raise(ERR_LIB_PEM, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
916 | return 0; |
917 | } | |
918 | p = buf; | |
919 | if (BIO_read(in, buf, buflen) != buflen) { | |
9311d0c4 | 920 | ERR_raise(ERR_LIB_PEM, PEM_R_PVK_DATA_TOO_SHORT); |
0f113f3e MC |
921 | goto err; |
922 | } | |
f4e46b81 | 923 | key = do_PVK_body_key(&p, saltlen, keylen, cb, u, isdss, ispub); |
0f113f3e MC |
924 | |
925 | err: | |
4b45c6e5 | 926 | OPENSSL_clear_free(buf, buflen); |
f4e46b81 RL |
927 | return key; |
928 | } | |
929 | ||
930 | #ifndef OPENSSL_NO_DSA | |
931 | DSA *b2i_DSA_PVK_bio(BIO *in, pem_password_cb *cb, void *u) | |
932 | { | |
933 | int isdss = 1; | |
934 | int ispub = 0; /* PVK keys are always private */ | |
935 | ||
936 | return do_PVK_key_bio(in, cb, u, &isdss, &ispub); | |
937 | } | |
938 | #endif | |
939 | ||
940 | RSA *b2i_RSA_PVK_bio(BIO *in, pem_password_cb *cb, void *u) | |
941 | { | |
942 | int isdss = 0; | |
943 | int ispub = 0; /* PVK keys are always private */ | |
944 | ||
945 | return do_PVK_key_bio(in, cb, u, &isdss, &ispub); | |
946 | } | |
947 | ||
948 | EVP_PKEY *b2i_PVK_bio(BIO *in, pem_password_cb *cb, void *u) | |
949 | { | |
950 | int isdss = -1; | |
951 | int ispub = -1; | |
952 | void *key = do_PVK_key_bio(in, cb, u, &isdss, &ispub); | |
953 | ||
954 | return evp_pkey_new0_key(key, isdss_to_evp_type(isdss)); | |
0f113f3e MC |
955 | } |
956 | ||
de0799b0 | 957 | static int i2b_PVK(unsigned char **out, const EVP_PKEY *pk, int enclevel, |
0f113f3e MC |
958 | pem_password_cb *cb, void *u) |
959 | { | |
960 | int outlen = 24, pklen; | |
a158f8cf | 961 | unsigned char *p = NULL, *start = NULL; |
8e588e28 | 962 | EVP_CIPHER_CTX *cctx = NULL; |
a158f8cf RL |
963 | #ifndef OPENSSL_NO_RC4 |
964 | unsigned char *salt = NULL; | |
965 | #endif | |
966 | ||
0f113f3e MC |
967 | if (enclevel) |
968 | outlen += PVK_SALTLEN; | |
969 | pklen = do_i2b(NULL, pk, 0); | |
970 | if (pklen < 0) | |
971 | return -1; | |
972 | outlen += pklen; | |
8e588e28 | 973 | if (out == NULL) |
0f113f3e | 974 | return outlen; |
8e588e28 | 975 | if (*out != NULL) { |
0f113f3e | 976 | p = *out; |
8e588e28 | 977 | } else { |
febb096c | 978 | start = p = OPENSSL_malloc(outlen); |
90945fa3 | 979 | if (p == NULL) { |
9311d0c4 | 980 | ERR_raise(ERR_LIB_PEM, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
981 | return -1; |
982 | } | |
0f113f3e MC |
983 | } |
984 | ||
8e588e28 MC |
985 | cctx = EVP_CIPHER_CTX_new(); |
986 | if (cctx == NULL) | |
098c1e3d | 987 | goto error; |
8e588e28 | 988 | |
0f113f3e MC |
989 | write_ledword(&p, MS_PVKMAGIC); |
990 | write_ledword(&p, 0); | |
a158f8cf | 991 | if (EVP_PKEY_id(pk) == EVP_PKEY_RSA) |
0f113f3e | 992 | write_ledword(&p, MS_KEYTYPE_KEYX); |
a158f8cf RL |
993 | #ifndef OPENSSL_NO_DSA |
994 | else | |
995 | write_ledword(&p, MS_KEYTYPE_SIGN); | |
996 | #endif | |
0f113f3e MC |
997 | write_ledword(&p, enclevel ? 1 : 0); |
998 | write_ledword(&p, enclevel ? PVK_SALTLEN : 0); | |
999 | write_ledword(&p, pklen); | |
1000 | if (enclevel) { | |
a158f8cf | 1001 | #ifndef OPENSSL_NO_RC4 |
0f113f3e MC |
1002 | if (RAND_bytes(p, PVK_SALTLEN) <= 0) |
1003 | goto error; | |
1004 | salt = p; | |
1005 | p += PVK_SALTLEN; | |
a158f8cf | 1006 | #endif |
0f113f3e MC |
1007 | } |
1008 | do_i2b(&p, pk, 0); | |
8e588e28 | 1009 | if (enclevel != 0) { |
a158f8cf | 1010 | #ifndef OPENSSL_NO_RC4 |
0f113f3e MC |
1011 | char psbuf[PEM_BUFSIZE]; |
1012 | unsigned char keybuf[20]; | |
1013 | int enctmplen, inlen; | |
a158f8cf | 1014 | |
0f113f3e MC |
1015 | if (cb) |
1016 | inlen = cb(psbuf, PEM_BUFSIZE, 1, u); | |
1017 | else | |
1018 | inlen = PEM_def_callback(psbuf, PEM_BUFSIZE, 1, u); | |
1019 | if (inlen <= 0) { | |
9311d0c4 | 1020 | ERR_raise(ERR_LIB_PEM, PEM_R_BAD_PASSWORD_READ); |
0f113f3e MC |
1021 | goto error; |
1022 | } | |
1023 | if (!derive_pvk_key(keybuf, salt, PVK_SALTLEN, | |
1024 | (unsigned char *)psbuf, inlen)) | |
1025 | goto error; | |
1026 | if (enclevel == 1) | |
1027 | memset(keybuf + 5, 0, 11); | |
1028 | p = salt + PVK_SALTLEN + 8; | |
846ec07d | 1029 | if (!EVP_EncryptInit_ex(cctx, EVP_rc4(), NULL, keybuf, NULL)) |
0f113f3e MC |
1030 | goto error; |
1031 | OPENSSL_cleanse(keybuf, 20); | |
dca51418 | 1032 | if (!EVP_EncryptUpdate(cctx, p, &enctmplen, p, pklen - 8)) |
0f113f3e | 1033 | goto error; |
dca51418 | 1034 | if (!EVP_EncryptFinal_ex(cctx, p + enctmplen, &enctmplen)) |
0f113f3e | 1035 | goto error; |
a158f8cf RL |
1036 | #else |
1037 | ERR_raise(ERR_LIB_PEM, PEM_R_UNSUPPORTED_CIPHER); | |
1038 | goto error; | |
1039 | #endif | |
0f113f3e | 1040 | } |
8e588e28 | 1041 | |
846ec07d | 1042 | EVP_CIPHER_CTX_free(cctx); |
8e588e28 MC |
1043 | |
1044 | if (*out == NULL) | |
febb096c | 1045 | *out = start; |
8e588e28 | 1046 | |
0f113f3e MC |
1047 | return outlen; |
1048 | ||
1049 | error: | |
846ec07d | 1050 | EVP_CIPHER_CTX_free(cctx); |
098c1e3d | 1051 | if (*out == NULL) |
febb096c | 1052 | OPENSSL_free(start); |
0f113f3e MC |
1053 | return -1; |
1054 | } | |
a0156a92 | 1055 | |
de0799b0 | 1056 | int i2b_PVK_bio(BIO *out, const EVP_PKEY *pk, int enclevel, |
0f113f3e MC |
1057 | pem_password_cb *cb, void *u) |
1058 | { | |
1059 | unsigned char *tmp = NULL; | |
1060 | int outlen, wrlen; | |
a158f8cf | 1061 | |
0f113f3e MC |
1062 | outlen = i2b_PVK(&tmp, pk, enclevel, cb, u); |
1063 | if (outlen < 0) | |
1064 | return -1; | |
1065 | wrlen = BIO_write(out, tmp, outlen); | |
1066 | OPENSSL_free(tmp); | |
1067 | if (wrlen == outlen) { | |
0f113f3e MC |
1068 | return outlen; |
1069 | } | |
9311d0c4 | 1070 | ERR_raise(ERR_LIB_PEM, PEM_R_BIO_WRITE_FAILURE); |
0f113f3e MC |
1071 | return -1; |
1072 | } |