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Commit | Line | Data |
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0f113f3e | 1 | /* |
33388b44 | 2 | * Copyright 2005-2020 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 | ||
b39fc560 | 21 | #include "internal/cryptlib.h" |
a0156a92 | 22 | #include <openssl/pem.h> |
0934cf48 | 23 | #include "crypto/pem.h" |
a0156a92 | 24 | #include <openssl/rand.h> |
1e26a8ba | 25 | #include <openssl/bn.h> |
a158f8cf RL |
26 | #include <openssl/dsa.h> |
27 | #include <openssl/rsa.h> | |
a0156a92 | 28 | |
0f113f3e MC |
29 | /* |
30 | * Utility function: read a DWORD (4 byte unsigned integer) in little endian | |
a0156a92 DSH |
31 | * format |
32 | */ | |
33 | ||
34 | static unsigned int read_ledword(const unsigned char **in) | |
0f113f3e MC |
35 | { |
36 | const unsigned char *p = *in; | |
37 | unsigned int ret; | |
a158f8cf | 38 | |
cbeb0bfa TM |
39 | ret = (unsigned int)*p++; |
40 | ret |= (unsigned int)*p++ << 8; | |
41 | ret |= (unsigned int)*p++ << 16; | |
42 | ret |= (unsigned int)*p++ << 24; | |
0f113f3e MC |
43 | *in = p; |
44 | return ret; | |
45 | } | |
46 | ||
47 | /* | |
48 | * Read a BIGNUM in little endian format. The docs say that this should take | |
49 | * up bitlen/8 bytes. | |
a0156a92 DSH |
50 | */ |
51 | ||
52 | static int read_lebn(const unsigned char **in, unsigned int nbyte, BIGNUM **r) | |
0f113f3e | 53 | { |
85a4807f DSH |
54 | *r = BN_lebin2bn(*in, nbyte, NULL); |
55 | if (*r == NULL) | |
0f113f3e | 56 | return 0; |
85a4807f DSH |
57 | *in += nbyte; |
58 | return 1; | |
0f113f3e | 59 | } |
a0156a92 DSH |
60 | |
61 | /* Convert private key blob to EVP_PKEY: RSA and DSA keys supported */ | |
62 | ||
0f113f3e MC |
63 | # define MS_PUBLICKEYBLOB 0x6 |
64 | # define MS_PRIVATEKEYBLOB 0x7 | |
65 | # define MS_RSA1MAGIC 0x31415352L | |
66 | # define MS_RSA2MAGIC 0x32415352L | |
67 | # define MS_DSS1MAGIC 0x31535344L | |
68 | # define MS_DSS2MAGIC 0x32535344L | |
a0156a92 | 69 | |
0f113f3e MC |
70 | # define MS_KEYALG_RSA_KEYX 0xa400 |
71 | # define MS_KEYALG_DSS_SIGN 0x2200 | |
a0156a92 | 72 | |
0f113f3e MC |
73 | # define MS_KEYTYPE_KEYX 0x1 |
74 | # define MS_KEYTYPE_SIGN 0x2 | |
a0156a92 | 75 | |
66bcba14 DSH |
76 | /* Maximum length of a blob after header */ |
77 | # define BLOB_MAX_LENGTH 102400 | |
78 | ||
a0156a92 | 79 | /* The PVK file magic number: seems to spell out "bobsfile", who is Bob? */ |
0f113f3e | 80 | # define MS_PVKMAGIC 0xb0b5f11eL |
a0156a92 | 81 | /* Salt length for PVK files */ |
0f113f3e | 82 | # define PVK_SALTLEN 0x10 |
5f57abe2 DSH |
83 | /* Maximum length in PVK header */ |
84 | # define PVK_MAX_KEYLEN 102400 | |
85 | /* Maximum salt length */ | |
86 | # define PVK_MAX_SALTLEN 10240 | |
a0156a92 | 87 | |
a773b52a | 88 | static EVP_PKEY *b2i_rsa(const unsigned char **in, |
0f113f3e | 89 | unsigned int bitlen, int ispub); |
a158f8cf | 90 | #ifndef OPENSSL_NO_DSA |
a773b52a | 91 | static EVP_PKEY *b2i_dss(const unsigned char **in, |
0f113f3e | 92 | unsigned int bitlen, int ispub); |
a158f8cf | 93 | #endif |
a0156a92 | 94 | |
f55838f3 RL |
95 | int ossl_do_blob_header(const unsigned char **in, unsigned int length, |
96 | unsigned int *pmagic, unsigned int *pbitlen, | |
97 | int *pisdss, int *pispub) | |
0f113f3e MC |
98 | { |
99 | const unsigned char *p = *in; | |
a158f8cf | 100 | |
0f113f3e MC |
101 | if (length < 16) |
102 | return 0; | |
103 | /* bType */ | |
104 | if (*p == MS_PUBLICKEYBLOB) { | |
105 | if (*pispub == 0) { | |
9311d0c4 | 106 | ERR_raise(ERR_LIB_PEM, PEM_R_EXPECTING_PRIVATE_KEY_BLOB); |
0f113f3e MC |
107 | return 0; |
108 | } | |
109 | *pispub = 1; | |
110 | } else if (*p == MS_PRIVATEKEYBLOB) { | |
111 | if (*pispub == 1) { | |
9311d0c4 | 112 | ERR_raise(ERR_LIB_PEM, PEM_R_EXPECTING_PUBLIC_KEY_BLOB); |
0f113f3e MC |
113 | return 0; |
114 | } | |
115 | *pispub = 0; | |
a158f8cf | 116 | } else { |
0f113f3e | 117 | return 0; |
a158f8cf | 118 | } |
0f113f3e MC |
119 | p++; |
120 | /* Version */ | |
121 | if (*p++ != 0x2) { | |
9311d0c4 | 122 | ERR_raise(ERR_LIB_PEM, PEM_R_BAD_VERSION_NUMBER); |
0f113f3e MC |
123 | return 0; |
124 | } | |
125 | /* Ignore reserved, aiKeyAlg */ | |
126 | p += 6; | |
127 | *pmagic = read_ledword(&p); | |
128 | *pbitlen = read_ledword(&p); | |
129 | *pisdss = 0; | |
130 | switch (*pmagic) { | |
131 | ||
132 | case MS_DSS1MAGIC: | |
133 | *pisdss = 1; | |
018fcbec | 134 | /* fall thru */ |
0f113f3e MC |
135 | case MS_RSA1MAGIC: |
136 | if (*pispub == 0) { | |
9311d0c4 | 137 | ERR_raise(ERR_LIB_PEM, PEM_R_EXPECTING_PRIVATE_KEY_BLOB); |
0f113f3e MC |
138 | return 0; |
139 | } | |
140 | break; | |
141 | ||
142 | case MS_DSS2MAGIC: | |
143 | *pisdss = 1; | |
018fcbec | 144 | /* fall thru */ |
0f113f3e MC |
145 | case MS_RSA2MAGIC: |
146 | if (*pispub == 1) { | |
9311d0c4 | 147 | ERR_raise(ERR_LIB_PEM, PEM_R_EXPECTING_PUBLIC_KEY_BLOB); |
0f113f3e MC |
148 | return 0; |
149 | } | |
150 | break; | |
151 | ||
152 | default: | |
9311d0c4 | 153 | ERR_raise(ERR_LIB_PEM, PEM_R_BAD_MAGIC_NUMBER); |
0f113f3e MC |
154 | return -1; |
155 | } | |
156 | *in = p; | |
157 | return 1; | |
158 | } | |
a0156a92 DSH |
159 | |
160 | static unsigned int blob_length(unsigned bitlen, int isdss, int ispub) | |
0f113f3e | 161 | { |
a158f8cf RL |
162 | unsigned int nbyte = (bitlen + 7) >> 3; |
163 | unsigned int hnbyte = (bitlen + 15) >> 4; | |
164 | ||
0f113f3e MC |
165 | if (isdss) { |
166 | ||
167 | /* | |
168 | * Expected length: 20 for q + 3 components bitlen each + 24 for seed | |
169 | * structure. | |
170 | */ | |
171 | if (ispub) | |
172 | return 44 + 3 * nbyte; | |
173 | /* | |
174 | * Expected length: 20 for q, priv, 2 bitlen components + 24 for seed | |
175 | * structure. | |
176 | */ | |
177 | else | |
178 | return 64 + 2 * nbyte; | |
179 | } else { | |
180 | /* Expected length: 4 for 'e' + 'n' */ | |
181 | if (ispub) | |
182 | return 4 + nbyte; | |
183 | else | |
184 | /* | |
185 | * Expected length: 4 for 'e' and 7 other components. 2 | |
186 | * components are bitlen size, 5 are bitlen/2 | |
187 | */ | |
188 | return 4 + 2 * nbyte + 5 * hnbyte; | |
189 | } | |
190 | ||
191 | } | |
a0156a92 | 192 | |
413835f5 | 193 | EVP_PKEY *ossl_b2i(const unsigned char **in, unsigned int length, int *ispub) |
0f113f3e MC |
194 | { |
195 | const unsigned char *p = *in; | |
196 | unsigned int bitlen, magic; | |
197 | int isdss; | |
a158f8cf | 198 | |
413835f5 | 199 | if (ossl_do_blob_header(&p, length, &magic, &bitlen, &isdss, ispub) <= 0) { |
9311d0c4 | 200 | ERR_raise(ERR_LIB_PEM, PEM_R_KEYBLOB_HEADER_PARSE_ERROR); |
0f113f3e MC |
201 | return NULL; |
202 | } | |
203 | length -= 16; | |
413835f5 | 204 | if (length < blob_length(bitlen, isdss, *ispub)) { |
9311d0c4 | 205 | ERR_raise(ERR_LIB_PEM, PEM_R_KEYBLOB_TOO_SHORT); |
0f113f3e MC |
206 | return NULL; |
207 | } | |
a158f8cf | 208 | if (!isdss) |
413835f5 | 209 | return b2i_rsa(&p, bitlen, *ispub); |
a158f8cf RL |
210 | #ifndef OPENSSL_NO_DSA |
211 | else | |
212 | return b2i_dss(&p, bitlen, *ispub); | |
213 | #endif | |
214 | ||
215 | ERR_raise(ERR_LIB_PEM, PEM_R_UNSUPPORTED_PUBLIC_KEY_TYPE); | |
216 | return NULL; | |
0f113f3e | 217 | } |
a0156a92 | 218 | |
413835f5 | 219 | EVP_PKEY *ossl_b2i_bio(BIO *in, int *ispub) |
0f113f3e MC |
220 | { |
221 | const unsigned char *p; | |
222 | unsigned char hdr_buf[16], *buf = NULL; | |
223 | unsigned int bitlen, magic, length; | |
224 | int isdss; | |
225 | EVP_PKEY *ret = NULL; | |
a158f8cf | 226 | |
0f113f3e | 227 | if (BIO_read(in, hdr_buf, 16) != 16) { |
9311d0c4 | 228 | ERR_raise(ERR_LIB_PEM, PEM_R_KEYBLOB_TOO_SHORT); |
0f113f3e MC |
229 | return NULL; |
230 | } | |
231 | p = hdr_buf; | |
413835f5 | 232 | if (ossl_do_blob_header(&p, 16, &magic, &bitlen, &isdss, ispub) <= 0) |
0f113f3e MC |
233 | return NULL; |
234 | ||
413835f5 | 235 | length = blob_length(bitlen, isdss, *ispub); |
66bcba14 | 236 | if (length > BLOB_MAX_LENGTH) { |
9311d0c4 | 237 | ERR_raise(ERR_LIB_PEM, PEM_R_HEADER_TOO_LONG); |
66bcba14 DSH |
238 | return NULL; |
239 | } | |
0f113f3e | 240 | buf = OPENSSL_malloc(length); |
90945fa3 | 241 | if (buf == NULL) { |
9311d0c4 | 242 | ERR_raise(ERR_LIB_PEM, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
243 | goto err; |
244 | } | |
245 | p = buf; | |
246 | if (BIO_read(in, buf, length) != (int)length) { | |
9311d0c4 | 247 | ERR_raise(ERR_LIB_PEM, PEM_R_KEYBLOB_TOO_SHORT); |
0f113f3e MC |
248 | goto err; |
249 | } | |
250 | ||
a158f8cf | 251 | if (!isdss) |
413835f5 | 252 | ret = b2i_rsa(&p, bitlen, *ispub); |
a158f8cf RL |
253 | #ifndef OPENSSL_NO_DSA |
254 | else | |
255 | ret = b2i_dss(&p, bitlen, *ispub); | |
256 | #endif | |
257 | ||
258 | if (ret == NULL) | |
259 | ERR_raise(ERR_LIB_PEM, PEM_R_UNSUPPORTED_PUBLIC_KEY_TYPE); | |
0f113f3e MC |
260 | |
261 | err: | |
b548a1f1 | 262 | OPENSSL_free(buf); |
0f113f3e MC |
263 | return ret; |
264 | } | |
a0156a92 | 265 | |
a158f8cf | 266 | #ifndef OPENSSL_NO_DSA |
a773b52a | 267 | static EVP_PKEY *b2i_dss(const unsigned char **in, |
0f113f3e MC |
268 | unsigned int bitlen, int ispub) |
269 | { | |
270 | const unsigned char *p = *in; | |
271 | EVP_PKEY *ret = NULL; | |
272 | DSA *dsa = NULL; | |
273 | BN_CTX *ctx = NULL; | |
1258396d MC |
274 | BIGNUM *pbn = NULL, *qbn = NULL, *gbn = NULL, *priv_key = NULL; |
275 | BIGNUM *pub_key = NULL; | |
a158f8cf | 276 | unsigned int nbyte = (bitlen + 7) >> 3; |
0f113f3e MC |
277 | |
278 | dsa = DSA_new(); | |
279 | ret = EVP_PKEY_new(); | |
90945fa3 | 280 | if (dsa == NULL || ret == NULL) |
0f113f3e | 281 | goto memerr; |
1258396d | 282 | if (!read_lebn(&p, nbyte, &pbn)) |
0f113f3e | 283 | goto memerr; |
1258396d MC |
284 | |
285 | if (!read_lebn(&p, 20, &qbn)) | |
0f113f3e | 286 | goto memerr; |
1258396d MC |
287 | |
288 | if (!read_lebn(&p, nbyte, &gbn)) | |
0f113f3e | 289 | goto memerr; |
1258396d | 290 | |
0f113f3e | 291 | if (ispub) { |
1258396d | 292 | if (!read_lebn(&p, nbyte, &pub_key)) |
0f113f3e MC |
293 | goto memerr; |
294 | } else { | |
1258396d | 295 | if (!read_lebn(&p, 20, &priv_key)) |
0f113f3e | 296 | goto memerr; |
1258396d | 297 | |
724339ff CPG |
298 | /* Set constant time flag before public key calculation */ |
299 | BN_set_flags(priv_key, BN_FLG_CONSTTIME); | |
300 | ||
0f113f3e | 301 | /* Calculate public key */ |
1258396d MC |
302 | pub_key = BN_new(); |
303 | if (pub_key == NULL) | |
0f113f3e | 304 | goto memerr; |
75ebbd9a | 305 | if ((ctx = BN_CTX_new()) == NULL) |
0f113f3e MC |
306 | goto memerr; |
307 | ||
1258396d | 308 | if (!BN_mod_exp(pub_key, gbn, priv_key, pbn, ctx)) |
0f113f3e | 309 | goto memerr; |
1258396d | 310 | |
0f113f3e | 311 | BN_CTX_free(ctx); |
d288d7fc | 312 | ctx = NULL; |
0f113f3e | 313 | } |
1258396d MC |
314 | if (!DSA_set0_pqg(dsa, pbn, qbn, gbn)) |
315 | goto memerr; | |
316 | pbn = qbn = gbn = NULL; | |
317 | if (!DSA_set0_key(dsa, pub_key, priv_key)) | |
318 | goto memerr; | |
d288d7fc | 319 | pub_key = priv_key = NULL; |
0f113f3e | 320 | |
d288d7fc BE |
321 | if (!EVP_PKEY_set1_DSA(ret, dsa)) |
322 | goto memerr; | |
0f113f3e MC |
323 | DSA_free(dsa); |
324 | *in = p; | |
325 | return ret; | |
326 | ||
327 | memerr: | |
9311d0c4 | 328 | ERR_raise(ERR_LIB_PEM, ERR_R_MALLOC_FAILURE); |
d6407083 | 329 | DSA_free(dsa); |
1258396d MC |
330 | BN_free(pbn); |
331 | BN_free(qbn); | |
332 | BN_free(gbn); | |
333 | BN_free(pub_key); | |
334 | BN_free(priv_key); | |
c5ba2d99 | 335 | EVP_PKEY_free(ret); |
23a1d5e9 | 336 | BN_CTX_free(ctx); |
0f113f3e MC |
337 | return NULL; |
338 | } | |
a158f8cf | 339 | #endif |
a0156a92 | 340 | |
a773b52a | 341 | static EVP_PKEY *b2i_rsa(const unsigned char **in, |
0f113f3e MC |
342 | unsigned int bitlen, int ispub) |
343 | { | |
9862e9aa | 344 | const unsigned char *pin = *in; |
0f113f3e | 345 | EVP_PKEY *ret = NULL; |
9862e9aa | 346 | BIGNUM *e = NULL, *n = NULL, *d = NULL; |
204cf940 | 347 | BIGNUM *p = NULL, *q = NULL, *dmp1 = NULL, *dmq1 = NULL, *iqmp = NULL; |
0f113f3e | 348 | RSA *rsa = NULL; |
a158f8cf RL |
349 | unsigned int nbyte = (bitlen + 7) >> 3; |
350 | unsigned int hnbyte = (bitlen + 15) >> 4; | |
351 | ||
0f113f3e MC |
352 | rsa = RSA_new(); |
353 | ret = EVP_PKEY_new(); | |
90945fa3 | 354 | if (rsa == NULL || ret == NULL) |
0f113f3e | 355 | goto memerr; |
9862e9aa RL |
356 | e = BN_new(); |
357 | if (e == NULL) | |
0f113f3e | 358 | goto memerr; |
9862e9aa | 359 | if (!BN_set_word(e, read_ledword(&pin))) |
0f113f3e | 360 | goto memerr; |
9862e9aa | 361 | if (!read_lebn(&pin, nbyte, &n)) |
0f113f3e MC |
362 | goto memerr; |
363 | if (!ispub) { | |
9862e9aa | 364 | if (!read_lebn(&pin, hnbyte, &p)) |
0f113f3e | 365 | goto memerr; |
9862e9aa | 366 | if (!read_lebn(&pin, hnbyte, &q)) |
0f113f3e | 367 | goto memerr; |
9862e9aa | 368 | if (!read_lebn(&pin, hnbyte, &dmp1)) |
0f113f3e | 369 | goto memerr; |
9862e9aa | 370 | if (!read_lebn(&pin, hnbyte, &dmq1)) |
0f113f3e | 371 | goto memerr; |
9862e9aa | 372 | if (!read_lebn(&pin, hnbyte, &iqmp)) |
0f113f3e | 373 | goto memerr; |
9862e9aa | 374 | if (!read_lebn(&pin, nbyte, &d)) |
0f113f3e | 375 | goto memerr; |
d288d7fc BE |
376 | if (!RSA_set0_factors(rsa, p, q)) |
377 | goto memerr; | |
378 | p = q = NULL; | |
379 | if (!RSA_set0_crt_params(rsa, dmp1, dmq1, iqmp)) | |
380 | goto memerr; | |
381 | dmp1 = dmq1 = iqmp = NULL; | |
0f113f3e | 382 | } |
d288d7fc BE |
383 | if (!RSA_set0_key(rsa, n, e, d)) |
384 | goto memerr; | |
385 | n = e = d = NULL; | |
0f113f3e | 386 | |
d288d7fc BE |
387 | if (!EVP_PKEY_set1_RSA(ret, rsa)) |
388 | goto memerr; | |
0f113f3e | 389 | RSA_free(rsa); |
9862e9aa | 390 | *in = pin; |
0f113f3e MC |
391 | return ret; |
392 | memerr: | |
9311d0c4 | 393 | ERR_raise(ERR_LIB_PEM, ERR_R_MALLOC_FAILURE); |
204cf940 MC |
394 | BN_free(e); |
395 | BN_free(n); | |
396 | BN_free(p); | |
397 | BN_free(q); | |
398 | BN_free(dmp1); | |
399 | BN_free(dmq1); | |
400 | BN_free(iqmp); | |
401 | BN_free(d); | |
d6407083 | 402 | RSA_free(rsa); |
c5ba2d99 | 403 | EVP_PKEY_free(ret); |
0f113f3e MC |
404 | return NULL; |
405 | } | |
a0156a92 DSH |
406 | |
407 | EVP_PKEY *b2i_PrivateKey(const unsigned char **in, long length) | |
0f113f3e | 408 | { |
413835f5 RL |
409 | int ispub = 0; |
410 | ||
411 | return ossl_b2i(in, length, &ispub); | |
0f113f3e | 412 | } |
a0156a92 DSH |
413 | |
414 | EVP_PKEY *b2i_PublicKey(const unsigned char **in, long length) | |
0f113f3e | 415 | { |
413835f5 RL |
416 | int ispub = 1; |
417 | ||
418 | return ossl_b2i(in, length, &ispub); | |
0f113f3e | 419 | } |
a0156a92 DSH |
420 | |
421 | EVP_PKEY *b2i_PrivateKey_bio(BIO *in) | |
0f113f3e | 422 | { |
413835f5 RL |
423 | int ispub = 0; |
424 | ||
425 | return ossl_b2i_bio(in, &ispub); | |
0f113f3e | 426 | } |
a0156a92 DSH |
427 | |
428 | EVP_PKEY *b2i_PublicKey_bio(BIO *in) | |
0f113f3e | 429 | { |
413835f5 RL |
430 | int ispub = 1; |
431 | ||
432 | return ossl_b2i_bio(in, &ispub); | |
0f113f3e | 433 | } |
a0156a92 DSH |
434 | |
435 | static void write_ledword(unsigned char **out, unsigned int dw) | |
0f113f3e MC |
436 | { |
437 | unsigned char *p = *out; | |
a158f8cf | 438 | |
0f113f3e MC |
439 | *p++ = dw & 0xff; |
440 | *p++ = (dw >> 8) & 0xff; | |
441 | *p++ = (dw >> 16) & 0xff; | |
442 | *p++ = (dw >> 24) & 0xff; | |
443 | *out = p; | |
444 | } | |
a0156a92 DSH |
445 | |
446 | static void write_lebn(unsigned char **out, const BIGNUM *bn, int len) | |
0f113f3e | 447 | { |
85a4807f DSH |
448 | BN_bn2lebinpad(bn, *out, len); |
449 | *out += len; | |
0f113f3e | 450 | } |
a0156a92 DSH |
451 | |
452 | static int check_bitlen_rsa(RSA *rsa, int ispub, unsigned int *magic); | |
a0156a92 | 453 | static void write_rsa(unsigned char **out, RSA *rsa, int ispub); |
a158f8cf RL |
454 | |
455 | #ifndef OPENSSL_NO_DSA | |
456 | static int check_bitlen_dsa(DSA *dsa, int ispub, unsigned int *magic); | |
a0156a92 | 457 | static void write_dsa(unsigned char **out, DSA *dsa, int ispub); |
a158f8cf | 458 | #endif |
0f113f3e | 459 | |
de0799b0 | 460 | static int do_i2b(unsigned char **out, const EVP_PKEY *pk, int ispub) |
0f113f3e MC |
461 | { |
462 | unsigned char *p; | |
a158f8cf | 463 | unsigned int bitlen = 0, magic = 0, keyalg = 0; |
0f113f3e | 464 | int outlen, noinc = 0; |
3aeb9348 | 465 | int pktype = EVP_PKEY_id(pk); |
a158f8cf RL |
466 | |
467 | if (pktype == EVP_PKEY_RSA) { | |
3aeb9348 | 468 | bitlen = check_bitlen_rsa(EVP_PKEY_get0_RSA(pk), ispub, &magic); |
0f113f3e | 469 | keyalg = MS_KEYALG_RSA_KEYX; |
a158f8cf RL |
470 | #ifndef OPENSSL_NO_DSA |
471 | } else if (pktype == EVP_PKEY_DSA) { | |
472 | bitlen = check_bitlen_dsa(EVP_PKEY_get0_DSA(pk), ispub, &magic); | |
473 | keyalg = MS_KEYALG_DSS_SIGN; | |
474 | #endif | |
475 | } | |
0f113f3e MC |
476 | if (bitlen == 0) |
477 | return -1; | |
478 | outlen = 16 + blob_length(bitlen, | |
479 | keyalg == MS_KEYALG_DSS_SIGN ? 1 : 0, ispub); | |
480 | if (out == NULL) | |
481 | return outlen; | |
482 | if (*out) | |
483 | p = *out; | |
484 | else { | |
cdb10bae | 485 | if ((p = OPENSSL_malloc(outlen)) == NULL) { |
9311d0c4 | 486 | ERR_raise(ERR_LIB_PEM, ERR_R_MALLOC_FAILURE); |
0f113f3e | 487 | return -1; |
cdb10bae | 488 | } |
0f113f3e MC |
489 | *out = p; |
490 | noinc = 1; | |
491 | } | |
492 | if (ispub) | |
493 | *p++ = MS_PUBLICKEYBLOB; | |
494 | else | |
495 | *p++ = MS_PRIVATEKEYBLOB; | |
496 | *p++ = 0x2; | |
497 | *p++ = 0; | |
498 | *p++ = 0; | |
499 | write_ledword(&p, keyalg); | |
500 | write_ledword(&p, magic); | |
501 | write_ledword(&p, bitlen); | |
a158f8cf | 502 | if (keyalg == MS_KEYALG_RSA_KEYX) |
3aeb9348 | 503 | write_rsa(&p, EVP_PKEY_get0_RSA(pk), ispub); |
a158f8cf RL |
504 | #ifndef OPENSSL_NO_DSA |
505 | else | |
506 | write_dsa(&p, EVP_PKEY_get0_DSA(pk), ispub); | |
507 | #endif | |
0f113f3e MC |
508 | if (!noinc) |
509 | *out += outlen; | |
510 | return outlen; | |
511 | } | |
a0156a92 | 512 | |
de0799b0 | 513 | static int do_i2b_bio(BIO *out, const EVP_PKEY *pk, int ispub) |
0f113f3e MC |
514 | { |
515 | unsigned char *tmp = NULL; | |
516 | int outlen, wrlen; | |
a158f8cf | 517 | |
0f113f3e MC |
518 | outlen = do_i2b(&tmp, pk, ispub); |
519 | if (outlen < 0) | |
520 | return -1; | |
521 | wrlen = BIO_write(out, tmp, outlen); | |
522 | OPENSSL_free(tmp); | |
523 | if (wrlen == outlen) | |
524 | return outlen; | |
525 | return -1; | |
526 | } | |
a0156a92 | 527 | |
a0156a92 | 528 | static int check_bitlen_rsa(RSA *rsa, int ispub, unsigned int *pmagic) |
0f113f3e MC |
529 | { |
530 | int nbyte, hnbyte, bitlen; | |
2ac6115d | 531 | const BIGNUM *e; |
9862e9aa | 532 | |
1e7c159d | 533 | RSA_get0_key(rsa, NULL, &e, NULL); |
9862e9aa | 534 | if (BN_num_bits(e) > 32) |
0f113f3e | 535 | goto badkey; |
9862e9aa RL |
536 | bitlen = RSA_bits(rsa); |
537 | nbyte = RSA_size(rsa); | |
538 | hnbyte = (bitlen + 15) >> 4; | |
0f113f3e MC |
539 | if (ispub) { |
540 | *pmagic = MS_RSA1MAGIC; | |
541 | return bitlen; | |
542 | } else { | |
2ac6115d | 543 | const BIGNUM *d, *p, *q, *iqmp, *dmp1, *dmq1; |
9862e9aa | 544 | |
0f113f3e | 545 | *pmagic = MS_RSA2MAGIC; |
9862e9aa | 546 | |
0f113f3e MC |
547 | /* |
548 | * For private key each component must fit within nbyte or hnbyte. | |
549 | */ | |
9862e9aa RL |
550 | RSA_get0_key(rsa, NULL, NULL, &d); |
551 | if (BN_num_bytes(d) > nbyte) | |
0f113f3e | 552 | goto badkey; |
9862e9aa RL |
553 | RSA_get0_factors(rsa, &p, &q); |
554 | RSA_get0_crt_params(rsa, &dmp1, &dmq1, &iqmp); | |
555 | if ((BN_num_bytes(iqmp) > hnbyte) | |
556 | || (BN_num_bytes(p) > hnbyte) | |
557 | || (BN_num_bytes(q) > hnbyte) | |
558 | || (BN_num_bytes(dmp1) > hnbyte) | |
559 | || (BN_num_bytes(dmq1) > hnbyte)) | |
0f113f3e MC |
560 | goto badkey; |
561 | } | |
562 | return bitlen; | |
563 | badkey: | |
9311d0c4 | 564 | ERR_raise(ERR_LIB_PEM, PEM_R_UNSUPPORTED_KEY_COMPONENTS); |
0f113f3e MC |
565 | return 0; |
566 | } | |
a0156a92 DSH |
567 | |
568 | static void write_rsa(unsigned char **out, RSA *rsa, int ispub) | |
0f113f3e MC |
569 | { |
570 | int nbyte, hnbyte; | |
2ac6115d | 571 | const BIGNUM *n, *d, *e, *p, *q, *iqmp, *dmp1, *dmq1; |
9862e9aa RL |
572 | |
573 | nbyte = RSA_size(rsa); | |
574 | hnbyte = (RSA_bits(rsa) + 15) >> 4; | |
1e7c159d | 575 | RSA_get0_key(rsa, &n, &e, &d); |
9862e9aa | 576 | write_lebn(out, e, 4); |
159f6e7e | 577 | write_lebn(out, n, nbyte); |
0f113f3e MC |
578 | if (ispub) |
579 | return; | |
9862e9aa RL |
580 | RSA_get0_factors(rsa, &p, &q); |
581 | RSA_get0_crt_params(rsa, &dmp1, &dmq1, &iqmp); | |
582 | write_lebn(out, p, hnbyte); | |
583 | write_lebn(out, q, hnbyte); | |
584 | write_lebn(out, dmp1, hnbyte); | |
585 | write_lebn(out, dmq1, hnbyte); | |
586 | write_lebn(out, iqmp, hnbyte); | |
587 | write_lebn(out, d, nbyte); | |
0f113f3e MC |
588 | } |
589 | ||
a158f8cf RL |
590 | #ifndef OPENSSL_NO_DSA |
591 | static int check_bitlen_dsa(DSA *dsa, int ispub, unsigned int *pmagic) | |
592 | { | |
593 | int bitlen; | |
594 | const BIGNUM *p = NULL, *q = NULL, *g = NULL; | |
595 | const BIGNUM *pub_key = NULL, *priv_key = NULL; | |
596 | ||
597 | DSA_get0_pqg(dsa, &p, &q, &g); | |
598 | DSA_get0_key(dsa, &pub_key, &priv_key); | |
599 | bitlen = BN_num_bits(p); | |
600 | if ((bitlen & 7) || (BN_num_bits(q) != 160) | |
601 | || (BN_num_bits(g) > bitlen)) | |
602 | goto badkey; | |
603 | if (ispub) { | |
604 | if (BN_num_bits(pub_key) > bitlen) | |
605 | goto badkey; | |
606 | *pmagic = MS_DSS1MAGIC; | |
607 | } else { | |
608 | if (BN_num_bits(priv_key) > 160) | |
609 | goto badkey; | |
610 | *pmagic = MS_DSS2MAGIC; | |
611 | } | |
612 | ||
613 | return bitlen; | |
614 | badkey: | |
615 | ERR_raise(ERR_LIB_PEM, PEM_R_UNSUPPORTED_KEY_COMPONENTS); | |
616 | return 0; | |
617 | } | |
618 | ||
a0156a92 | 619 | static void write_dsa(unsigned char **out, DSA *dsa, int ispub) |
0f113f3e MC |
620 | { |
621 | int nbyte; | |
2ac6115d RL |
622 | const BIGNUM *p = NULL, *q = NULL, *g = NULL; |
623 | const BIGNUM *pub_key = NULL, *priv_key = NULL; | |
6e9fa57c MC |
624 | |
625 | DSA_get0_pqg(dsa, &p, &q, &g); | |
626 | DSA_get0_key(dsa, &pub_key, &priv_key); | |
627 | nbyte = BN_num_bytes(p); | |
628 | write_lebn(out, p, nbyte); | |
629 | write_lebn(out, q, 20); | |
630 | write_lebn(out, g, nbyte); | |
0f113f3e | 631 | if (ispub) |
6e9fa57c | 632 | write_lebn(out, pub_key, nbyte); |
0f113f3e | 633 | else |
6e9fa57c | 634 | write_lebn(out, priv_key, 20); |
0f113f3e MC |
635 | /* Set "invalid" for seed structure values */ |
636 | memset(*out, 0xff, 24); | |
637 | *out += 24; | |
638 | return; | |
639 | } | |
a158f8cf | 640 | #endif |
a0156a92 | 641 | |
de0799b0 | 642 | int i2b_PrivateKey_bio(BIO *out, const EVP_PKEY *pk) |
0f113f3e MC |
643 | { |
644 | return do_i2b_bio(out, pk, 0); | |
645 | } | |
a0156a92 | 646 | |
de0799b0 | 647 | int i2b_PublicKey_bio(BIO *out, const EVP_PKEY *pk) |
0f113f3e MC |
648 | { |
649 | return do_i2b_bio(out, pk, 1); | |
650 | } | |
a0156a92 | 651 | |
f55838f3 RL |
652 | int ossl_do_PVK_header(const unsigned char **in, unsigned int length, |
653 | int skip_magic, | |
654 | unsigned int *psaltlen, unsigned int *pkeylen) | |
0f113f3e MC |
655 | { |
656 | const unsigned char *p = *in; | |
657 | unsigned int pvk_magic, is_encrypted; | |
12a765a5 | 658 | |
0f113f3e MC |
659 | if (skip_magic) { |
660 | if (length < 20) { | |
9311d0c4 | 661 | ERR_raise(ERR_LIB_PEM, PEM_R_PVK_TOO_SHORT); |
0f113f3e MC |
662 | return 0; |
663 | } | |
0f113f3e MC |
664 | } else { |
665 | if (length < 24) { | |
9311d0c4 | 666 | ERR_raise(ERR_LIB_PEM, PEM_R_PVK_TOO_SHORT); |
0f113f3e MC |
667 | return 0; |
668 | } | |
0f113f3e MC |
669 | pvk_magic = read_ledword(&p); |
670 | if (pvk_magic != MS_PVKMAGIC) { | |
9311d0c4 | 671 | ERR_raise(ERR_LIB_PEM, PEM_R_BAD_MAGIC_NUMBER); |
0f113f3e MC |
672 | return 0; |
673 | } | |
674 | } | |
675 | /* Skip reserved */ | |
676 | p += 4; | |
677 | /* | |
678 | * keytype = | |
679 | */ read_ledword(&p); | |
680 | is_encrypted = read_ledword(&p); | |
681 | *psaltlen = read_ledword(&p); | |
682 | *pkeylen = read_ledword(&p); | |
683 | ||
5f57abe2 DSH |
684 | if (*pkeylen > PVK_MAX_KEYLEN || *psaltlen > PVK_MAX_SALTLEN) |
685 | return 0; | |
686 | ||
12a765a5 | 687 | if (is_encrypted && *psaltlen == 0) { |
9311d0c4 | 688 | ERR_raise(ERR_LIB_PEM, PEM_R_INCONSISTENT_HEADER); |
0f113f3e MC |
689 | return 0; |
690 | } | |
691 | ||
692 | *in = p; | |
693 | return 1; | |
694 | } | |
695 | ||
a158f8cf | 696 | #ifndef OPENSSL_NO_RC4 |
0f113f3e MC |
697 | static int derive_pvk_key(unsigned char *key, |
698 | const unsigned char *salt, unsigned int saltlen, | |
699 | const unsigned char *pass, int passlen) | |
700 | { | |
3cb9fd97 | 701 | EVP_MD_CTX *mctx = EVP_MD_CTX_new(); |
0f113f3e | 702 | int rv = 1; |
a158f8cf | 703 | |
6e59a892 RL |
704 | if (mctx == NULL |
705 | || !EVP_DigestInit_ex(mctx, EVP_sha1(), NULL) | |
706 | || !EVP_DigestUpdate(mctx, salt, saltlen) | |
707 | || !EVP_DigestUpdate(mctx, pass, passlen) | |
708 | || !EVP_DigestFinal_ex(mctx, key, NULL)) | |
0f113f3e MC |
709 | rv = 0; |
710 | ||
bfb0641f | 711 | EVP_MD_CTX_free(mctx); |
0f113f3e MC |
712 | return rv; |
713 | } | |
a158f8cf | 714 | #endif |
a0156a92 DSH |
715 | |
716 | static EVP_PKEY *do_PVK_body(const unsigned char **in, | |
0f113f3e MC |
717 | unsigned int saltlen, unsigned int keylen, |
718 | pem_password_cb *cb, void *u) | |
719 | { | |
720 | EVP_PKEY *ret = NULL; | |
721 | const unsigned char *p = *in; | |
a158f8cf | 722 | unsigned char *enctmp = NULL; |
0239283d | 723 | unsigned char keybuf[20]; |
25aaa98a | 724 | |
846ec07d | 725 | EVP_CIPHER_CTX *cctx = EVP_CIPHER_CTX_new(); |
0f113f3e | 726 | if (saltlen) { |
a158f8cf RL |
727 | #ifndef OPENSSL_NO_RC4 |
728 | unsigned int magic; | |
0f113f3e | 729 | char psbuf[PEM_BUFSIZE]; |
0f113f3e | 730 | int enctmplen, inlen; |
a158f8cf RL |
731 | unsigned char *q; |
732 | ||
0f113f3e MC |
733 | if (cb) |
734 | inlen = cb(psbuf, PEM_BUFSIZE, 0, u); | |
735 | else | |
736 | inlen = PEM_def_callback(psbuf, PEM_BUFSIZE, 0, u); | |
c82c3462 | 737 | if (inlen < 0) { |
9311d0c4 | 738 | ERR_raise(ERR_LIB_PEM, PEM_R_BAD_PASSWORD_READ); |
3f6c7691 | 739 | goto err; |
0f113f3e MC |
740 | } |
741 | enctmp = OPENSSL_malloc(keylen + 8); | |
90945fa3 | 742 | if (enctmp == NULL) { |
9311d0c4 | 743 | ERR_raise(ERR_LIB_PEM, ERR_R_MALLOC_FAILURE); |
3f6c7691 | 744 | goto err; |
0f113f3e MC |
745 | } |
746 | if (!derive_pvk_key(keybuf, p, saltlen, | |
747 | (unsigned char *)psbuf, inlen)) | |
3f6c7691 | 748 | goto err; |
0f113f3e MC |
749 | p += saltlen; |
750 | /* Copy BLOBHEADER across, decrypt rest */ | |
751 | memcpy(enctmp, p, 8); | |
752 | p += 8; | |
753 | if (keylen < 8) { | |
9311d0c4 | 754 | ERR_raise(ERR_LIB_PEM, PEM_R_PVK_TOO_SHORT); |
3f6c7691 | 755 | goto err; |
0f113f3e MC |
756 | } |
757 | inlen = keylen - 8; | |
758 | q = enctmp + 8; | |
846ec07d | 759 | if (!EVP_DecryptInit_ex(cctx, EVP_rc4(), NULL, keybuf, NULL)) |
0f113f3e | 760 | goto err; |
846ec07d | 761 | if (!EVP_DecryptUpdate(cctx, q, &enctmplen, p, inlen)) |
0f113f3e | 762 | goto err; |
846ec07d | 763 | if (!EVP_DecryptFinal_ex(cctx, q + enctmplen, &enctmplen)) |
0f113f3e MC |
764 | goto err; |
765 | magic = read_ledword((const unsigned char **)&q); | |
766 | if (magic != MS_RSA2MAGIC && magic != MS_DSS2MAGIC) { | |
767 | q = enctmp + 8; | |
768 | memset(keybuf + 5, 0, 11); | |
846ec07d | 769 | if (!EVP_DecryptInit_ex(cctx, EVP_rc4(), NULL, keybuf, NULL)) |
0f113f3e | 770 | goto err; |
846ec07d | 771 | if (!EVP_DecryptUpdate(cctx, q, &enctmplen, p, inlen)) |
0f113f3e | 772 | goto err; |
846ec07d | 773 | if (!EVP_DecryptFinal_ex(cctx, q + enctmplen, &enctmplen)) |
0f113f3e MC |
774 | goto err; |
775 | magic = read_ledword((const unsigned char **)&q); | |
776 | if (magic != MS_RSA2MAGIC && magic != MS_DSS2MAGIC) { | |
9311d0c4 | 777 | ERR_raise(ERR_LIB_PEM, PEM_R_BAD_DECRYPT); |
0f113f3e MC |
778 | goto err; |
779 | } | |
0239283d | 780 | } |
0f113f3e | 781 | p = enctmp; |
a158f8cf RL |
782 | #else |
783 | ERR_raise(ERR_LIB_PEM, PEM_R_UNSUPPORTED_CIPHER); | |
784 | goto err; | |
785 | #endif | |
0f113f3e MC |
786 | } |
787 | ||
788 | ret = b2i_PrivateKey(&p, keylen); | |
789 | err: | |
846ec07d | 790 | EVP_CIPHER_CTX_free(cctx); |
0239283d SL |
791 | if (enctmp != NULL) { |
792 | OPENSSL_cleanse(keybuf, sizeof(keybuf)); | |
793 | OPENSSL_free(enctmp); | |
794 | } | |
0f113f3e MC |
795 | return ret; |
796 | } | |
a0156a92 DSH |
797 | |
798 | EVP_PKEY *b2i_PVK_bio(BIO *in, pem_password_cb *cb, void *u) | |
0f113f3e MC |
799 | { |
800 | unsigned char pvk_hdr[24], *buf = NULL; | |
801 | const unsigned char *p; | |
802 | int buflen; | |
803 | EVP_PKEY *ret = NULL; | |
804 | unsigned int saltlen, keylen; | |
a158f8cf | 805 | |
0f113f3e | 806 | if (BIO_read(in, pvk_hdr, 24) != 24) { |
9311d0c4 | 807 | ERR_raise(ERR_LIB_PEM, PEM_R_PVK_DATA_TOO_SHORT); |
0f113f3e MC |
808 | return NULL; |
809 | } | |
810 | p = pvk_hdr; | |
811 | ||
f55838f3 | 812 | if (!ossl_do_PVK_header(&p, 24, 0, &saltlen, &keylen)) |
0f113f3e MC |
813 | return 0; |
814 | buflen = (int)keylen + saltlen; | |
815 | buf = OPENSSL_malloc(buflen); | |
90945fa3 | 816 | if (buf == NULL) { |
9311d0c4 | 817 | ERR_raise(ERR_LIB_PEM, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
818 | return 0; |
819 | } | |
820 | p = buf; | |
821 | if (BIO_read(in, buf, buflen) != buflen) { | |
9311d0c4 | 822 | ERR_raise(ERR_LIB_PEM, PEM_R_PVK_DATA_TOO_SHORT); |
0f113f3e MC |
823 | goto err; |
824 | } | |
825 | ret = do_PVK_body(&p, saltlen, keylen, cb, u); | |
826 | ||
827 | err: | |
4b45c6e5 | 828 | OPENSSL_clear_free(buf, buflen); |
0f113f3e MC |
829 | return ret; |
830 | } | |
831 | ||
de0799b0 | 832 | static int i2b_PVK(unsigned char **out, const EVP_PKEY *pk, int enclevel, |
0f113f3e MC |
833 | pem_password_cb *cb, void *u) |
834 | { | |
835 | int outlen = 24, pklen; | |
a158f8cf | 836 | unsigned char *p = NULL, *start = NULL; |
8e588e28 | 837 | EVP_CIPHER_CTX *cctx = NULL; |
a158f8cf RL |
838 | #ifndef OPENSSL_NO_RC4 |
839 | unsigned char *salt = NULL; | |
840 | #endif | |
841 | ||
0f113f3e MC |
842 | if (enclevel) |
843 | outlen += PVK_SALTLEN; | |
844 | pklen = do_i2b(NULL, pk, 0); | |
845 | if (pklen < 0) | |
846 | return -1; | |
847 | outlen += pklen; | |
8e588e28 | 848 | if (out == NULL) |
0f113f3e | 849 | return outlen; |
8e588e28 | 850 | if (*out != NULL) { |
0f113f3e | 851 | p = *out; |
8e588e28 | 852 | } else { |
febb096c | 853 | start = p = OPENSSL_malloc(outlen); |
90945fa3 | 854 | if (p == NULL) { |
9311d0c4 | 855 | ERR_raise(ERR_LIB_PEM, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
856 | return -1; |
857 | } | |
0f113f3e MC |
858 | } |
859 | ||
8e588e28 MC |
860 | cctx = EVP_CIPHER_CTX_new(); |
861 | if (cctx == NULL) | |
098c1e3d | 862 | goto error; |
8e588e28 | 863 | |
0f113f3e MC |
864 | write_ledword(&p, MS_PVKMAGIC); |
865 | write_ledword(&p, 0); | |
a158f8cf | 866 | if (EVP_PKEY_id(pk) == EVP_PKEY_RSA) |
0f113f3e | 867 | write_ledword(&p, MS_KEYTYPE_KEYX); |
a158f8cf RL |
868 | #ifndef OPENSSL_NO_DSA |
869 | else | |
870 | write_ledword(&p, MS_KEYTYPE_SIGN); | |
871 | #endif | |
0f113f3e MC |
872 | write_ledword(&p, enclevel ? 1 : 0); |
873 | write_ledword(&p, enclevel ? PVK_SALTLEN : 0); | |
874 | write_ledword(&p, pklen); | |
875 | if (enclevel) { | |
a158f8cf | 876 | #ifndef OPENSSL_NO_RC4 |
0f113f3e MC |
877 | if (RAND_bytes(p, PVK_SALTLEN) <= 0) |
878 | goto error; | |
879 | salt = p; | |
880 | p += PVK_SALTLEN; | |
a158f8cf | 881 | #endif |
0f113f3e MC |
882 | } |
883 | do_i2b(&p, pk, 0); | |
8e588e28 | 884 | if (enclevel != 0) { |
a158f8cf | 885 | #ifndef OPENSSL_NO_RC4 |
0f113f3e MC |
886 | char psbuf[PEM_BUFSIZE]; |
887 | unsigned char keybuf[20]; | |
888 | int enctmplen, inlen; | |
a158f8cf | 889 | |
0f113f3e MC |
890 | if (cb) |
891 | inlen = cb(psbuf, PEM_BUFSIZE, 1, u); | |
892 | else | |
893 | inlen = PEM_def_callback(psbuf, PEM_BUFSIZE, 1, u); | |
894 | if (inlen <= 0) { | |
9311d0c4 | 895 | ERR_raise(ERR_LIB_PEM, PEM_R_BAD_PASSWORD_READ); |
0f113f3e MC |
896 | goto error; |
897 | } | |
898 | if (!derive_pvk_key(keybuf, salt, PVK_SALTLEN, | |
899 | (unsigned char *)psbuf, inlen)) | |
900 | goto error; | |
901 | if (enclevel == 1) | |
902 | memset(keybuf + 5, 0, 11); | |
903 | p = salt + PVK_SALTLEN + 8; | |
846ec07d | 904 | if (!EVP_EncryptInit_ex(cctx, EVP_rc4(), NULL, keybuf, NULL)) |
0f113f3e MC |
905 | goto error; |
906 | OPENSSL_cleanse(keybuf, 20); | |
dca51418 | 907 | if (!EVP_EncryptUpdate(cctx, p, &enctmplen, p, pklen - 8)) |
0f113f3e | 908 | goto error; |
dca51418 | 909 | if (!EVP_EncryptFinal_ex(cctx, p + enctmplen, &enctmplen)) |
0f113f3e | 910 | goto error; |
a158f8cf RL |
911 | #else |
912 | ERR_raise(ERR_LIB_PEM, PEM_R_UNSUPPORTED_CIPHER); | |
913 | goto error; | |
914 | #endif | |
0f113f3e | 915 | } |
8e588e28 | 916 | |
846ec07d | 917 | EVP_CIPHER_CTX_free(cctx); |
8e588e28 MC |
918 | |
919 | if (*out == NULL) | |
febb096c | 920 | *out = start; |
8e588e28 | 921 | |
0f113f3e MC |
922 | return outlen; |
923 | ||
924 | error: | |
846ec07d | 925 | EVP_CIPHER_CTX_free(cctx); |
098c1e3d | 926 | if (*out == NULL) |
febb096c | 927 | OPENSSL_free(start); |
0f113f3e MC |
928 | return -1; |
929 | } | |
a0156a92 | 930 | |
de0799b0 | 931 | int i2b_PVK_bio(BIO *out, const EVP_PKEY *pk, int enclevel, |
0f113f3e MC |
932 | pem_password_cb *cb, void *u) |
933 | { | |
934 | unsigned char *tmp = NULL; | |
935 | int outlen, wrlen; | |
a158f8cf | 936 | |
0f113f3e MC |
937 | outlen = i2b_PVK(&tmp, pk, enclevel, cb, u); |
938 | if (outlen < 0) | |
939 | return -1; | |
940 | wrlen = BIO_write(out, tmp, outlen); | |
941 | OPENSSL_free(tmp); | |
942 | if (wrlen == outlen) { | |
0f113f3e MC |
943 | return outlen; |
944 | } | |
9311d0c4 | 945 | ERR_raise(ERR_LIB_PEM, PEM_R_BIO_WRITE_FAILURE); |
0f113f3e MC |
946 | return -1; |
947 | } |