2 * Copyright (c) 2004 - 2007 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the Institute nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
40 struct hx509_generate_private_context {
41 const heim_oid *key_oid;
43 unsigned long num_bits;
46 struct hx509_private_key_ops {
48 const heim_oid *key_oid;
49 int (*available)(const hx509_private_key,
50 const AlgorithmIdentifier *);
51 int (*get_spki)(hx509_context,
52 const hx509_private_key,
53 SubjectPublicKeyInfo *);
54 int (*export)(hx509_context context,
55 const hx509_private_key,
58 int (*import)(hx509_context, const AlgorithmIdentifier *,
59 const void *, size_t, hx509_key_format_t,
61 int (*generate_private_key)(hx509_context,
62 struct hx509_generate_private_context *,
64 BIGNUM *(*get_internal)(hx509_context, hx509_private_key, const char *);
67 struct hx509_private_key {
69 const struct signature_alg *md;
70 const heim_oid *signature_alg;
78 hx509_private_key_ops *ops;
85 struct signature_alg {
87 const heim_oid *sig_oid;
88 const AlgorithmIdentifier *sig_alg;
89 const heim_oid *key_oid;
90 const AlgorithmIdentifier *digest_alg;
92 #define PROVIDE_CONF 0x1
93 #define REQUIRE_SIGNER 0x2
94 #define SELF_SIGNED_OK 0x4
96 #define SIG_DIGEST 0x100
97 #define SIG_PUBLIC_SIG 0x200
98 #define SIG_SECRET 0x400
100 #define RA_RSA_USES_DIGEST_INFO 0x1000000
102 time_t best_before; /* refuse signature made after best before date */
103 const EVP_MD *(*evp_md)(void);
104 int (*verify_signature)(hx509_context context,
105 const struct signature_alg *,
107 const AlgorithmIdentifier *,
108 const heim_octet_string *,
109 const heim_octet_string *);
110 int (*create_signature)(hx509_context,
111 const struct signature_alg *,
112 const hx509_private_key,
113 const AlgorithmIdentifier *,
114 const heim_octet_string *,
115 AlgorithmIdentifier *,
116 heim_octet_string *);
120 static const struct signature_alg *
121 find_sig_alg(const heim_oid *oid);
127 static const heim_octet_string null_entry_oid = { 2, rk_UNCONST("\x05\x00") };
129 static const unsigned sha512_oid_tree[] = { 2, 16, 840, 1, 101, 3, 4, 2, 3 };
130 const AlgorithmIdentifier _hx509_signature_sha512_data = {
131 { 9, rk_UNCONST(sha512_oid_tree) }, rk_UNCONST(&null_entry_oid)
134 static const unsigned sha384_oid_tree[] = { 2, 16, 840, 1, 101, 3, 4, 2, 2 };
135 const AlgorithmIdentifier _hx509_signature_sha384_data = {
136 { 9, rk_UNCONST(sha384_oid_tree) }, rk_UNCONST(&null_entry_oid)
139 static const unsigned sha256_oid_tree[] = { 2, 16, 840, 1, 101, 3, 4, 2, 1 };
140 const AlgorithmIdentifier _hx509_signature_sha256_data = {
141 { 9, rk_UNCONST(sha256_oid_tree) }, rk_UNCONST(&null_entry_oid)
144 static const unsigned sha1_oid_tree[] = { 1, 3, 14, 3, 2, 26 };
145 const AlgorithmIdentifier _hx509_signature_sha1_data = {
146 { 6, rk_UNCONST(sha1_oid_tree) }, rk_UNCONST(&null_entry_oid)
149 static const unsigned md5_oid_tree[] = { 1, 2, 840, 113549, 2, 5 };
150 const AlgorithmIdentifier _hx509_signature_md5_data = {
151 { 6, rk_UNCONST(md5_oid_tree) }, rk_UNCONST(&null_entry_oid)
154 static const unsigned ecPublicKey[] ={ 1, 2, 840, 10045, 2, 1 };
155 const AlgorithmIdentifier _hx509_signature_ecPublicKey = {
156 { 6, rk_UNCONST(ecPublicKey) }, NULL
159 static const unsigned ecdsa_with_sha256_oid[] ={ 1, 2, 840, 10045, 4, 3, 2 };
160 const AlgorithmIdentifier _hx509_signature_ecdsa_with_sha256_data = {
161 { 7, rk_UNCONST(ecdsa_with_sha256_oid) }, NULL
164 static const unsigned ecdsa_with_sha1_oid[] ={ 1, 2, 840, 10045, 4, 1 };
165 const AlgorithmIdentifier _hx509_signature_ecdsa_with_sha1_data = {
166 { 6, rk_UNCONST(ecdsa_with_sha1_oid) }, NULL
169 static const unsigned rsa_with_sha512_oid[] ={ 1, 2, 840, 113549, 1, 1, 13 };
170 const AlgorithmIdentifier _hx509_signature_rsa_with_sha512_data = {
171 { 7, rk_UNCONST(rsa_with_sha512_oid) }, NULL
174 static const unsigned rsa_with_sha384_oid[] ={ 1, 2, 840, 113549, 1, 1, 12 };
175 const AlgorithmIdentifier _hx509_signature_rsa_with_sha384_data = {
176 { 7, rk_UNCONST(rsa_with_sha384_oid) }, NULL
179 static const unsigned rsa_with_sha256_oid[] ={ 1, 2, 840, 113549, 1, 1, 11 };
180 const AlgorithmIdentifier _hx509_signature_rsa_with_sha256_data = {
181 { 7, rk_UNCONST(rsa_with_sha256_oid) }, NULL
184 static const unsigned rsa_with_sha1_oid[] ={ 1, 2, 840, 113549, 1, 1, 5 };
185 const AlgorithmIdentifier _hx509_signature_rsa_with_sha1_data = {
186 { 7, rk_UNCONST(rsa_with_sha1_oid) }, NULL
189 static const unsigned rsa_with_md5_oid[] ={ 1, 2, 840, 113549, 1, 1, 4 };
190 const AlgorithmIdentifier _hx509_signature_rsa_with_md5_data = {
191 { 7, rk_UNCONST(rsa_with_md5_oid) }, NULL
194 static const unsigned rsa_oid[] ={ 1, 2, 840, 113549, 1, 1, 1 };
195 const AlgorithmIdentifier _hx509_signature_rsa_data = {
196 { 7, rk_UNCONST(rsa_oid) }, NULL
199 static const unsigned rsa_pkcs1_x509_oid[] ={ 1, 2, 752, 43, 16, 1 };
200 const AlgorithmIdentifier _hx509_signature_rsa_pkcs1_x509_data = {
201 { 6, rk_UNCONST(rsa_pkcs1_x509_oid) }, NULL
204 static const unsigned des_rsdi_ede3_cbc_oid[] ={ 1, 2, 840, 113549, 3, 7 };
205 const AlgorithmIdentifier _hx509_des_rsdi_ede3_cbc_oid = {
206 { 6, rk_UNCONST(des_rsdi_ede3_cbc_oid) }, NULL
209 static const unsigned aes128_cbc_oid[] ={ 2, 16, 840, 1, 101, 3, 4, 1, 2 };
210 const AlgorithmIdentifier _hx509_crypto_aes128_cbc_data = {
211 { 9, rk_UNCONST(aes128_cbc_oid) }, NULL
214 static const unsigned aes256_cbc_oid[] ={ 2, 16, 840, 1, 101, 3, 4, 1, 42 };
215 const AlgorithmIdentifier _hx509_crypto_aes256_cbc_data = {
216 { 9, rk_UNCONST(aes256_cbc_oid) }, NULL
224 heim_int2BN(const heim_integer *i)
228 bn = BN_bin2bn(i->data, i->length, NULL);
230 BN_set_negative(bn, i->negative);
239 set_digest_alg(DigestAlgorithmIdentifier *id,
241 const void *param, size_t length)
245 id->parameters = malloc(sizeof(*id->parameters));
246 if (id->parameters == NULL)
248 id->parameters->data = malloc(length);
249 if (id->parameters->data == NULL) {
250 free(id->parameters);
251 id->parameters = NULL;
254 memcpy(id->parameters->data, param, length);
255 id->parameters->length = length;
257 id->parameters = NULL;
258 ret = der_copy_oid(oid, &id->algorithm);
260 if (id->parameters) {
261 free(id->parameters->data);
262 free(id->parameters);
263 id->parameters = NULL;
273 heim_oid2ecnid(heim_oid *oid)
276 * Now map to openssl OID fun
279 if (der_heim_oid_cmp(oid, ASN1_OID_ID_EC_GROUP_SECP256R1) == 0)
280 return NID_X9_62_prime256v1;
281 else if (der_heim_oid_cmp(oid, ASN1_OID_ID_EC_GROUP_SECP160R1) == 0)
282 return NID_secp160r1;
283 else if (der_heim_oid_cmp(oid, ASN1_OID_ID_EC_GROUP_SECP160R2) == 0)
284 return NID_secp160r2;
290 parse_ECParameters(hx509_context context,
291 heim_octet_string *parameters, int *nid)
293 ECParameters ecparam;
297 if (parameters == NULL) {
298 ret = HX509_PARSING_KEY_FAILED;
299 hx509_set_error_string(context, 0, ret,
300 "EC parameters missing");
304 ret = decode_ECParameters(parameters->data, parameters->length,
307 hx509_set_error_string(context, 0, ret,
308 "Failed to decode EC parameters");
312 if (ecparam.element != choice_ECParameters_namedCurve) {
313 free_ECParameters(&ecparam);
314 hx509_set_error_string(context, 0, ret,
315 "EC parameters is not a named curve");
316 return HX509_CRYPTO_SIG_INVALID_FORMAT;
319 *nid = heim_oid2ecnid(&ecparam.u.namedCurve);
320 free_ECParameters(&ecparam);
322 hx509_set_error_string(context, 0, ret,
323 "Failed to find matcing NID for EC curve");
324 return HX509_CRYPTO_SIG_INVALID_FORMAT;
335 ecdsa_verify_signature(hx509_context context,
336 const struct signature_alg *sig_alg,
337 const Certificate *signer,
338 const AlgorithmIdentifier *alg,
339 const heim_octet_string *data,
340 const heim_octet_string *sig)
342 const AlgorithmIdentifier *digest_alg;
343 const SubjectPublicKeyInfo *spi;
344 heim_octet_string digest;
349 const unsigned char *p;
352 digest_alg = sig_alg->digest_alg;
354 ret = _hx509_create_signature(context,
364 spi = &signer->tbsCertificate.subjectPublicKeyInfo;
366 if (der_heim_oid_cmp(&spi->algorithm.algorithm, ASN1_OID_ID_ECPUBLICKEY) != 0)
367 return HX509_CRYPTO_SIG_INVALID_FORMAT;
374 ret = parse_ECParameters(context, spi->algorithm.parameters, &groupnid);
376 der_free_octet_string(&digest);
381 * Create group, key, parse key
385 group = EC_GROUP_new_by_curve_name(groupnid);
386 EC_KEY_set_group(key, group);
387 EC_GROUP_free(group);
389 p = spi->subjectPublicKey.data;
390 len = spi->subjectPublicKey.length / 8;
392 if (o2i_ECPublicKey(&key, &p, len) == NULL) {
394 return HX509_CRYPTO_SIG_INVALID_FORMAT;
397 key = SubjectPublicKeyInfo2EC_KEY(spi);
400 ret = ECDSA_verify(-1, digest.data, digest.length,
401 sig->data, sig->length, key);
402 der_free_octet_string(&digest);
405 ret = HX509_CRYPTO_SIG_INVALID_FORMAT;
413 ecdsa_create_signature(hx509_context context,
414 const struct signature_alg *sig_alg,
415 const hx509_private_key signer,
416 const AlgorithmIdentifier *alg,
417 const heim_octet_string *data,
418 AlgorithmIdentifier *signatureAlgorithm,
419 heim_octet_string *sig)
421 const AlgorithmIdentifier *digest_alg;
422 heim_octet_string indata;
423 const heim_oid *sig_oid;
427 if (signer->ops && der_heim_oid_cmp(signer->ops->key_oid, ASN1_OID_ID_ECPUBLICKEY) != 0)
428 _hx509_abort("internal error passing private key to wrong ops");
430 sig_oid = sig_alg->sig_oid;
431 digest_alg = sig_alg->digest_alg;
433 if (signatureAlgorithm) {
434 ret = set_digest_alg(signatureAlgorithm, sig_oid, "\x05\x00", 2);
436 hx509_clear_error_string(context);
441 ret = _hx509_create_signature(context,
448 if (signatureAlgorithm)
449 free_AlgorithmIdentifier(signatureAlgorithm);
453 sig->length = ECDSA_size(signer->private_key.ecdsa);
454 sig->data = malloc(sig->length);
455 if (sig->data == NULL) {
456 der_free_octet_string(&indata);
458 hx509_set_error_string(context, 0, ret, "out of memory");
462 siglen = sig->length;
464 ret = ECDSA_sign(-1, indata.data, indata.length,
465 sig->data, &siglen, signer->private_key.ecdsa);
466 der_free_octet_string(&indata);
468 ret = HX509_CMS_FAILED_CREATE_SIGATURE;
469 hx509_set_error_string(context, 0, ret,
470 "ECDSA sign failed: %d", ret);
473 if (siglen > sig->length)
474 _hx509_abort("ECDSA signature prelen longer the output len");
476 sig->length = siglen;
480 if (signatureAlgorithm)
481 free_AlgorithmIdentifier(signatureAlgorithm);
486 ecdsa_available(const hx509_private_key signer,
487 const AlgorithmIdentifier *sig_alg)
489 const struct signature_alg *sig;
490 const EC_GROUP *group;
491 BN_CTX *bnctx = NULL;
492 BIGNUM *order = NULL;
495 if (der_heim_oid_cmp(signer->ops->key_oid, &asn1_oid_id_ecPublicKey) != 0)
496 _hx509_abort("internal error passing private key to wrong ops");
498 sig = find_sig_alg(&sig_alg->algorithm);
500 if (sig == NULL || sig->digest_size == 0)
503 group = EC_KEY_get0_group(signer->private_key.ecdsa);
507 bnctx = BN_CTX_new();
512 if (EC_GROUP_get_order(group, order, bnctx) != 1)
515 if (BN_num_bytes(order) > sig->digest_size)
521 BN_clear_free(order);
527 #endif /* HAVE_OPENSSL */
534 rsa_verify_signature(hx509_context context,
535 const struct signature_alg *sig_alg,
536 const Certificate *signer,
537 const AlgorithmIdentifier *alg,
538 const heim_octet_string *data,
539 const heim_octet_string *sig)
541 const SubjectPublicKeyInfo *spi;
548 const unsigned char *p;
550 memset(&di, 0, sizeof(di));
552 spi = &signer->tbsCertificate.subjectPublicKeyInfo;
554 p = spi->subjectPublicKey.data;
555 size = spi->subjectPublicKey.length / 8;
557 rsa = d2i_RSAPublicKey(NULL, &p, size);
560 hx509_set_error_string(context, 0, ret, "out of memory");
564 tosize = RSA_size(rsa);
568 hx509_set_error_string(context, 0, ret, "out of memory");
572 retsize = RSA_public_decrypt(sig->length, (unsigned char *)sig->data,
573 to, rsa, RSA_PKCS1_PADDING);
575 ret = HX509_CRYPTO_SIG_INVALID_FORMAT;
576 hx509_set_error_string(context, 0, ret,
577 "RSA public decrypt failed: %d", retsize);
581 if (retsize > tosize)
582 _hx509_abort("internal rsa decryption failure: ret > tosize");
584 if (sig_alg->flags & RA_RSA_USES_DIGEST_INFO) {
586 ret = decode_DigestInfo(to, retsize, &di, &size);
592 /* Check for extra data inside the sigature */
593 if (size != (size_t)retsize) {
594 ret = HX509_CRYPTO_SIG_INVALID_FORMAT;
595 hx509_set_error_string(context, 0, ret, "size from decryption mismatch");
599 if (sig_alg->digest_alg &&
600 der_heim_oid_cmp(&di.digestAlgorithm.algorithm,
601 &sig_alg->digest_alg->algorithm) != 0)
603 ret = HX509_CRYPTO_OID_MISMATCH;
604 hx509_set_error_string(context, 0, ret, "object identifier in RSA sig mismatch");
608 /* verify that the parameters are NULL or the NULL-type */
609 if (di.digestAlgorithm.parameters != NULL &&
610 (di.digestAlgorithm.parameters->length != 2 ||
611 memcmp(di.digestAlgorithm.parameters->data, "\x05\x00", 2) != 0))
613 ret = HX509_CRYPTO_SIG_INVALID_FORMAT;
614 hx509_set_error_string(context, 0, ret, "Extra parameters inside RSA signature");
618 ret = _hx509_verify_signature(context,
624 if ((size_t)retsize != data->length ||
625 ct_memcmp(to, data->data, retsize) != 0)
627 ret = HX509_CRYPTO_SIG_INVALID_FORMAT;
628 hx509_set_error_string(context, 0, ret, "RSA Signature incorrect");
636 free_DigestInfo(&di);
643 rsa_create_signature(hx509_context context,
644 const struct signature_alg *sig_alg,
645 const hx509_private_key signer,
646 const AlgorithmIdentifier *alg,
647 const heim_octet_string *data,
648 AlgorithmIdentifier *signatureAlgorithm,
649 heim_octet_string *sig)
651 const AlgorithmIdentifier *digest_alg;
652 heim_octet_string indata;
653 const heim_oid *sig_oid;
657 if (signer->ops && der_heim_oid_cmp(signer->ops->key_oid, ASN1_OID_ID_PKCS1_RSAENCRYPTION) != 0)
658 return HX509_ALG_NOT_SUPP;
661 sig_oid = &alg->algorithm;
663 sig_oid = signer->signature_alg;
665 if (der_heim_oid_cmp(sig_oid, ASN1_OID_ID_PKCS1_SHA512WITHRSAENCRYPTION) == 0) {
666 digest_alg = hx509_signature_sha512();
667 } else if (der_heim_oid_cmp(sig_oid, ASN1_OID_ID_PKCS1_SHA384WITHRSAENCRYPTION) == 0) {
668 digest_alg = hx509_signature_sha384();
669 } else if (der_heim_oid_cmp(sig_oid, ASN1_OID_ID_PKCS1_SHA256WITHRSAENCRYPTION) == 0) {
670 digest_alg = hx509_signature_sha256();
671 } else if (der_heim_oid_cmp(sig_oid, ASN1_OID_ID_PKCS1_SHA1WITHRSAENCRYPTION) == 0) {
672 digest_alg = hx509_signature_sha1();
673 } else if (der_heim_oid_cmp(sig_oid, ASN1_OID_ID_PKCS1_MD5WITHRSAENCRYPTION) == 0) {
674 digest_alg = hx509_signature_md5();
675 } else if (der_heim_oid_cmp(sig_oid, ASN1_OID_ID_PKCS1_MD5WITHRSAENCRYPTION) == 0) {
676 digest_alg = hx509_signature_md5();
677 } else if (der_heim_oid_cmp(sig_oid, ASN1_OID_ID_DSA_WITH_SHA1) == 0) {
678 digest_alg = hx509_signature_sha1();
679 } else if (der_heim_oid_cmp(sig_oid, ASN1_OID_ID_PKCS1_RSAENCRYPTION) == 0) {
680 digest_alg = hx509_signature_sha1();
681 } else if (der_heim_oid_cmp(sig_oid, ASN1_OID_ID_HEIM_RSA_PKCS1_X509) == 0) {
684 return HX509_ALG_NOT_SUPP;
686 if (signatureAlgorithm) {
687 ret = set_digest_alg(signatureAlgorithm, sig_oid, "\x05\x00", 2);
689 hx509_clear_error_string(context);
696 memset(&di, 0, sizeof(di));
698 ret = _hx509_create_signature(context,
706 ASN1_MALLOC_ENCODE(DigestInfo,
712 free_DigestInfo(&di);
714 hx509_set_error_string(context, 0, ret, "out of memory");
717 if (indata.length != size)
718 _hx509_abort("internal ASN.1 encoder error");
723 sig->length = RSA_size(signer->private_key.rsa);
724 sig->data = malloc(sig->length);
725 if (sig->data == NULL) {
726 der_free_octet_string(&indata);
727 hx509_set_error_string(context, 0, ENOMEM, "out of memory");
731 ret = RSA_private_encrypt(indata.length, indata.data,
733 signer->private_key.rsa,
735 if (indata.data != data->data)
736 der_free_octet_string(&indata);
738 ret = HX509_CMS_FAILED_CREATE_SIGATURE;
739 hx509_set_error_string(context, 0, ret,
740 "RSA private encrypt failed: %d", ret);
743 if ((size_t)ret > sig->length)
744 _hx509_abort("RSA signature prelen longer the output len");
752 rsa_private_key_import(hx509_context context,
753 const AlgorithmIdentifier *keyai,
756 hx509_key_format_t format,
757 hx509_private_key private_key)
760 case HX509_KEY_FORMAT_DER: {
761 const unsigned char *p = data;
763 private_key->private_key.rsa =
764 d2i_RSAPrivateKey(NULL, &p, len);
765 if (private_key->private_key.rsa == NULL) {
766 hx509_set_error_string(context, 0, HX509_PARSING_KEY_FAILED,
767 "Failed to parse RSA key");
768 return HX509_PARSING_KEY_FAILED;
770 private_key->signature_alg = ASN1_OID_ID_PKCS1_SHA1WITHRSAENCRYPTION;
775 return HX509_CRYPTO_KEY_FORMAT_UNSUPPORTED;
782 rsa_private_key2SPKI(hx509_context context,
783 hx509_private_key private_key,
784 SubjectPublicKeyInfo *spki)
788 memset(spki, 0, sizeof(*spki));
790 len = i2d_RSAPublicKey(private_key->private_key.rsa, NULL);
792 spki->subjectPublicKey.data = malloc(len);
793 if (spki->subjectPublicKey.data == NULL) {
794 hx509_set_error_string(context, 0, ENOMEM, "malloc - out of memory");
797 spki->subjectPublicKey.length = len * 8;
799 ret = set_digest_alg(&spki->algorithm, ASN1_OID_ID_PKCS1_RSAENCRYPTION,
802 hx509_set_error_string(context, 0, ret, "malloc - out of memory");
803 free(spki->subjectPublicKey.data);
804 spki->subjectPublicKey.data = NULL;
805 spki->subjectPublicKey.length = 0;
810 unsigned char *pp = spki->subjectPublicKey.data;
811 i2d_RSAPublicKey(private_key->private_key.rsa, &pp);
818 rsa_generate_private_key(hx509_context context,
819 struct hx509_generate_private_context *ctx,
820 hx509_private_key private_key)
826 static const int default_rsa_e = 65537;
827 static const int default_rsa_bits = 2048;
829 private_key->private_key.rsa = RSA_new();
830 if (private_key->private_key.rsa == NULL) {
831 hx509_set_error_string(context, 0, HX509_PARSING_KEY_FAILED,
832 "Failed to generate RSA key");
833 return HX509_PARSING_KEY_FAILED;
837 BN_set_word(e, default_rsa_e);
839 bits = default_rsa_bits;
842 bits = ctx->num_bits;
844 ret = RSA_generate_key_ex(private_key->private_key.rsa, bits, e, NULL);
847 hx509_set_error_string(context, 0, HX509_PARSING_KEY_FAILED,
848 "Failed to generate RSA key");
849 return HX509_PARSING_KEY_FAILED;
851 private_key->signature_alg = ASN1_OID_ID_PKCS1_SHA1WITHRSAENCRYPTION;
857 rsa_private_key_export(hx509_context context,
858 const hx509_private_key key,
859 hx509_key_format_t format,
860 heim_octet_string *data)
868 case HX509_KEY_FORMAT_DER:
870 ret = i2d_RSAPrivateKey(key->private_key.rsa, NULL);
873 hx509_set_error_string(context, 0, ret,
874 "Private key is not exportable");
878 data->data = malloc(ret);
879 if (data->data == NULL) {
881 hx509_set_error_string(context, 0, ret, "malloc out of memory");
887 unsigned char *p = data->data;
888 i2d_RSAPrivateKey(key->private_key.rsa, &p);
892 return HX509_CRYPTO_KEY_FORMAT_UNSUPPORTED;
899 rsa_get_internal(hx509_context context,
900 hx509_private_key key,
905 if (strcasecmp(type, "rsa-modulus") == 0) {
906 RSA_get0_key(key->private_key.rsa, &n, NULL, NULL);
907 } else if (strcasecmp(type, "rsa-exponent") == 0) {
908 RSA_get0_key(key->private_key.rsa, NULL, &n, NULL);
916 static hx509_private_key_ops rsa_private_key_ops = {
918 ASN1_OID_ID_PKCS1_RSAENCRYPTION,
920 rsa_private_key2SPKI,
921 rsa_private_key_export,
922 rsa_private_key_import,
923 rsa_generate_private_key,
930 ecdsa_private_key2SPKI(hx509_context context,
931 hx509_private_key private_key,
932 SubjectPublicKeyInfo *spki)
934 memset(spki, 0, sizeof(*spki));
939 ecdsa_private_key_export(hx509_context context,
940 const hx509_private_key key,
941 hx509_key_format_t format,
942 heim_octet_string *data)
944 return HX509_CRYPTO_KEY_FORMAT_UNSUPPORTED;
948 ecdsa_private_key_import(hx509_context context,
949 const AlgorithmIdentifier *keyai,
952 hx509_key_format_t format,
953 hx509_private_key private_key)
955 const unsigned char *p = data;
956 EC_KEY **pkey = NULL;
958 if (keyai->parameters) {
964 ret = parse_ECParameters(context, keyai->parameters, &groupnid);
972 group = EC_GROUP_new_by_curve_name(groupnid);
977 EC_GROUP_set_asn1_flag(group, OPENSSL_EC_NAMED_CURVE);
978 if (EC_KEY_set_group(key, group) == 0) {
980 EC_GROUP_free(group);
983 EC_GROUP_free(group);
988 case HX509_KEY_FORMAT_DER:
990 private_key->private_key.ecdsa = d2i_ECPrivateKey(pkey, &p, len);
991 if (private_key->private_key.ecdsa == NULL) {
992 hx509_set_error_string(context, 0, HX509_PARSING_KEY_FAILED,
993 "Failed to parse EC private key");
994 return HX509_PARSING_KEY_FAILED;
996 private_key->signature_alg = ASN1_OID_ID_ECDSA_WITH_SHA256;
1000 return HX509_CRYPTO_KEY_FORMAT_UNSUPPORTED;
1007 ecdsa_generate_private_key(hx509_context context,
1008 struct hx509_generate_private_context *ctx,
1009 hx509_private_key private_key)
1015 ecdsa_get_internal(hx509_context context,
1016 hx509_private_key key,
1023 static hx509_private_key_ops ecdsa_private_key_ops = {
1025 ASN1_OID_ID_ECPUBLICKEY,
1027 ecdsa_private_key2SPKI,
1028 ecdsa_private_key_export,
1029 ecdsa_private_key_import,
1030 ecdsa_generate_private_key,
1034 #endif /* HAVE_OPENSSL */
1041 dsa_verify_signature(hx509_context context,
1042 const struct signature_alg *sig_alg,
1043 const Certificate *signer,
1044 const AlgorithmIdentifier *alg,
1045 const heim_octet_string *data,
1046 const heim_octet_string *sig)
1048 const SubjectPublicKeyInfo *spi;
1052 BIGNUM *key, *p, *q, *g;
1056 spi = &signer->tbsCertificate.subjectPublicKeyInfo;
1060 hx509_set_error_string(context, 0, ENOMEM, "out of memory");
1064 ret = decode_DSAPublicKey(spi->subjectPublicKey.data,
1065 spi->subjectPublicKey.length / 8,
1070 key = heim_int2BN(&pk);
1072 free_DSAPublicKey(&pk);
1076 hx509_set_error_string(context, 0, ret, "out of memory");
1080 ret = DSA_set0_key(dsa, key, NULL);
1085 hx509_set_error_string(context, 0, ret, "failed to set DSA key");
1089 if (spi->algorithm.parameters == NULL) {
1090 ret = HX509_CRYPTO_SIG_INVALID_FORMAT;
1091 hx509_set_error_string(context, 0, ret, "DSA parameters missing");
1095 ret = decode_DSAParams(spi->algorithm.parameters->data,
1096 spi->algorithm.parameters->length,
1100 hx509_set_error_string(context, 0, ret, "DSA parameters failed to decode");
1104 p = heim_int2BN(¶m.p);
1105 q = heim_int2BN(¶m.q);
1106 g = heim_int2BN(¶m.g);
1108 free_DSAParams(¶m);
1110 if (p == NULL || q == NULL || g == NULL) {
1115 hx509_set_error_string(context, 0, ret, "out of memory");
1119 ret = DSA_set0_pqg(dsa, p, q, g);
1126 hx509_set_error_string(context, 0, ret, "failed to set DSA parameters");
1130 ret = DSA_verify(-1, data->data, data->length,
1131 (unsigned char*)sig->data, sig->length,
1135 else if (ret == 0 || ret == -1) {
1136 ret = HX509_CRYPTO_BAD_SIGNATURE;
1137 hx509_set_error_string(context, 0, ret, "BAD DSA sigature");
1139 ret = HX509_CRYPTO_SIG_INVALID_FORMAT;
1140 hx509_set_error_string(context, 0, ret, "Invalid format of DSA sigature");
1151 dsa_parse_private_key(hx509_context context,
1154 hx509_private_key private_key)
1156 const unsigned char *p = data;
1158 private_key->private_key.dsa =
1159 d2i_DSAPrivateKey(NULL, &p, len);
1160 if (private_key->private_key.dsa == NULL)
1162 private_key->signature_alg = ASN1_OID_ID_DSA_WITH_SHA1;
1166 hx509_set_error_string(context, 0, HX509_PARSING_KEY_FAILED,
1167 "No support to parse DSA keys");
1168 return HX509_PARSING_KEY_FAILED;
1173 evp_md_create_signature(hx509_context context,
1174 const struct signature_alg *sig_alg,
1175 const hx509_private_key signer,
1176 const AlgorithmIdentifier *alg,
1177 const heim_octet_string *data,
1178 AlgorithmIdentifier *signatureAlgorithm,
1179 heim_octet_string *sig)
1181 size_t sigsize = EVP_MD_size(sig_alg->evp_md());
1184 memset(sig, 0, sizeof(*sig));
1186 if (signatureAlgorithm) {
1188 ret = set_digest_alg(signatureAlgorithm, sig_alg->sig_oid,
1195 sig->data = malloc(sigsize);
1196 if (sig->data == NULL) {
1200 sig->length = sigsize;
1202 ctx = EVP_MD_CTX_create();
1203 EVP_DigestInit_ex(ctx, sig_alg->evp_md(), NULL);
1204 EVP_DigestUpdate(ctx, data->data, data->length);
1205 EVP_DigestFinal_ex(ctx, sig->data, NULL);
1206 EVP_MD_CTX_destroy(ctx);
1213 evp_md_verify_signature(hx509_context context,
1214 const struct signature_alg *sig_alg,
1215 const Certificate *signer,
1216 const AlgorithmIdentifier *alg,
1217 const heim_octet_string *data,
1218 const heim_octet_string *sig)
1220 unsigned char digest[EVP_MAX_MD_SIZE];
1222 size_t sigsize = EVP_MD_size(sig_alg->evp_md());
1224 if (sig->length != sigsize || sigsize > sizeof(digest)) {
1225 hx509_set_error_string(context, 0, HX509_CRYPTO_SIG_INVALID_FORMAT,
1226 "SHA256 sigature have wrong length");
1227 return HX509_CRYPTO_SIG_INVALID_FORMAT;
1230 ctx = EVP_MD_CTX_create();
1231 EVP_DigestInit_ex(ctx, sig_alg->evp_md(), NULL);
1232 EVP_DigestUpdate(ctx, data->data, data->length);
1233 EVP_DigestFinal_ex(ctx, digest, NULL);
1234 EVP_MD_CTX_destroy(ctx);
1236 if (ct_memcmp(digest, sig->data, sigsize) != 0) {
1237 hx509_set_error_string(context, 0, HX509_CRYPTO_BAD_SIGNATURE,
1238 "Bad %s sigature", sig_alg->name);
1239 return HX509_CRYPTO_BAD_SIGNATURE;
1247 static const struct signature_alg ecdsa_with_sha256_alg = {
1248 "ecdsa-with-sha256",
1249 ASN1_OID_ID_ECDSA_WITH_SHA256,
1250 &_hx509_signature_ecdsa_with_sha256_data,
1251 ASN1_OID_ID_ECPUBLICKEY,
1252 &_hx509_signature_sha256_data,
1253 PROVIDE_CONF|REQUIRE_SIGNER|RA_RSA_USES_DIGEST_INFO|SIG_PUBLIC_SIG|SELF_SIGNED_OK,
1256 ecdsa_verify_signature,
1257 ecdsa_create_signature,
1261 static const struct signature_alg ecdsa_with_sha1_alg = {
1263 ASN1_OID_ID_ECDSA_WITH_SHA1,
1264 &_hx509_signature_ecdsa_with_sha1_data,
1265 ASN1_OID_ID_ECPUBLICKEY,
1266 &_hx509_signature_sha1_data,
1267 PROVIDE_CONF|REQUIRE_SIGNER|RA_RSA_USES_DIGEST_INFO|SIG_PUBLIC_SIG|SELF_SIGNED_OK,
1270 ecdsa_verify_signature,
1271 ecdsa_create_signature,
1277 static const struct signature_alg heim_rsa_pkcs1_x509 = {
1279 ASN1_OID_ID_HEIM_RSA_PKCS1_X509,
1280 &_hx509_signature_rsa_pkcs1_x509_data,
1281 ASN1_OID_ID_PKCS1_RSAENCRYPTION,
1283 PROVIDE_CONF|REQUIRE_SIGNER|SIG_PUBLIC_SIG,
1286 rsa_verify_signature,
1287 rsa_create_signature,
1291 static const struct signature_alg pkcs1_rsa_sha1_alg = {
1293 ASN1_OID_ID_PKCS1_RSAENCRYPTION,
1294 &_hx509_signature_rsa_with_sha1_data,
1295 ASN1_OID_ID_PKCS1_RSAENCRYPTION,
1297 PROVIDE_CONF|REQUIRE_SIGNER|RA_RSA_USES_DIGEST_INFO|SIG_PUBLIC_SIG|SELF_SIGNED_OK,
1300 rsa_verify_signature,
1301 rsa_create_signature,
1305 static const struct signature_alg rsa_with_sha512_alg = {
1307 ASN1_OID_ID_PKCS1_SHA512WITHRSAENCRYPTION,
1308 &_hx509_signature_rsa_with_sha512_data,
1309 ASN1_OID_ID_PKCS1_RSAENCRYPTION,
1310 &_hx509_signature_sha512_data,
1311 PROVIDE_CONF|REQUIRE_SIGNER|RA_RSA_USES_DIGEST_INFO|SIG_PUBLIC_SIG|SELF_SIGNED_OK,
1314 rsa_verify_signature,
1315 rsa_create_signature,
1319 static const struct signature_alg rsa_with_sha384_alg = {
1321 ASN1_OID_ID_PKCS1_SHA384WITHRSAENCRYPTION,
1322 &_hx509_signature_rsa_with_sha384_data,
1323 ASN1_OID_ID_PKCS1_RSAENCRYPTION,
1324 &_hx509_signature_sha384_data,
1325 PROVIDE_CONF|REQUIRE_SIGNER|RA_RSA_USES_DIGEST_INFO|SIG_PUBLIC_SIG|SELF_SIGNED_OK,
1328 rsa_verify_signature,
1329 rsa_create_signature,
1333 static const struct signature_alg rsa_with_sha256_alg = {
1335 ASN1_OID_ID_PKCS1_SHA256WITHRSAENCRYPTION,
1336 &_hx509_signature_rsa_with_sha256_data,
1337 ASN1_OID_ID_PKCS1_RSAENCRYPTION,
1338 &_hx509_signature_sha256_data,
1339 PROVIDE_CONF|REQUIRE_SIGNER|RA_RSA_USES_DIGEST_INFO|SIG_PUBLIC_SIG|SELF_SIGNED_OK,
1342 rsa_verify_signature,
1343 rsa_create_signature,
1347 static const struct signature_alg rsa_with_sha1_alg = {
1349 ASN1_OID_ID_PKCS1_SHA1WITHRSAENCRYPTION,
1350 &_hx509_signature_rsa_with_sha1_data,
1351 ASN1_OID_ID_PKCS1_RSAENCRYPTION,
1352 &_hx509_signature_sha1_data,
1353 PROVIDE_CONF|REQUIRE_SIGNER|RA_RSA_USES_DIGEST_INFO|SIG_PUBLIC_SIG|SELF_SIGNED_OK,
1356 rsa_verify_signature,
1357 rsa_create_signature,
1361 static const struct signature_alg rsa_with_sha1_alg_secsig = {
1363 ASN1_OID_ID_SECSIG_SHA_1WITHRSAENCRYPTION,
1364 &_hx509_signature_rsa_with_sha1_data,
1365 ASN1_OID_ID_PKCS1_RSAENCRYPTION,
1366 &_hx509_signature_sha1_data,
1367 PROVIDE_CONF|REQUIRE_SIGNER|RA_RSA_USES_DIGEST_INFO|SIG_PUBLIC_SIG|SELF_SIGNED_OK,
1370 rsa_verify_signature,
1371 rsa_create_signature,
1375 static const struct signature_alg rsa_with_md5_alg = {
1377 ASN1_OID_ID_PKCS1_MD5WITHRSAENCRYPTION,
1378 &_hx509_signature_rsa_with_md5_data,
1379 ASN1_OID_ID_PKCS1_RSAENCRYPTION,
1380 &_hx509_signature_md5_data,
1381 PROVIDE_CONF|REQUIRE_SIGNER|RA_RSA_USES_DIGEST_INFO|SIG_PUBLIC_SIG,
1384 rsa_verify_signature,
1385 rsa_create_signature,
1389 static const struct signature_alg dsa_sha1_alg = {
1391 ASN1_OID_ID_DSA_WITH_SHA1,
1394 &_hx509_signature_sha1_data,
1395 PROVIDE_CONF|REQUIRE_SIGNER|SIG_PUBLIC_SIG,
1398 dsa_verify_signature,
1399 /* create_signature */ NULL,
1403 static const struct signature_alg sha512_alg = {
1406 &_hx509_signature_sha512_data,
1412 evp_md_verify_signature,
1413 evp_md_create_signature,
1417 static const struct signature_alg sha384_alg = {
1420 &_hx509_signature_sha384_data,
1426 evp_md_verify_signature,
1427 evp_md_create_signature,
1431 static const struct signature_alg sha256_alg = {
1434 &_hx509_signature_sha256_data,
1440 evp_md_verify_signature,
1441 evp_md_create_signature,
1445 static const struct signature_alg sha1_alg = {
1447 ASN1_OID_ID_SECSIG_SHA_1,
1448 &_hx509_signature_sha1_data,
1454 evp_md_verify_signature,
1455 evp_md_create_signature,
1459 static const struct signature_alg md5_alg = {
1461 ASN1_OID_ID_RSA_DIGEST_MD5,
1462 &_hx509_signature_md5_data,
1468 evp_md_verify_signature,
1474 * Order matter in this structure, "best" first for each "key
1475 * compatible" type (type is ECDSA, RSA, DSA, none, etc)
1478 static const struct signature_alg *sig_algs[] = {
1480 &ecdsa_with_sha256_alg,
1481 &ecdsa_with_sha1_alg,
1483 &rsa_with_sha512_alg,
1484 &rsa_with_sha384_alg,
1485 &rsa_with_sha256_alg,
1487 &rsa_with_sha1_alg_secsig,
1488 &pkcs1_rsa_sha1_alg,
1490 &heim_rsa_pkcs1_x509,
1500 static const struct signature_alg *
1501 find_sig_alg(const heim_oid *oid)
1504 for (i = 0; sig_algs[i]; i++)
1505 if (der_heim_oid_cmp(sig_algs[i]->sig_oid, oid) == 0)
1510 static const AlgorithmIdentifier *
1511 alg_for_privatekey(const hx509_private_key pk, int type)
1513 const heim_oid *keytype;
1516 if (pk->ops == NULL)
1519 keytype = pk->ops->key_oid;
1521 for (i = 0; sig_algs[i]; i++) {
1522 if (sig_algs[i]->key_oid == NULL)
1524 if (der_heim_oid_cmp(sig_algs[i]->key_oid, keytype) != 0)
1526 if (pk->ops->available &&
1527 pk->ops->available(pk, sig_algs[i]->sig_alg) == 0)
1529 if (type == HX509_SELECT_PUBLIC_SIG)
1530 return sig_algs[i]->sig_alg;
1531 if (type == HX509_SELECT_DIGEST)
1532 return sig_algs[i]->digest_alg;
1543 static struct hx509_private_key_ops *private_algs[] = {
1544 &rsa_private_key_ops,
1546 &ecdsa_private_key_ops,
1551 hx509_private_key_ops *
1552 hx509_find_private_alg(const heim_oid *oid)
1555 for (i = 0; private_algs[i]; i++) {
1556 if (private_algs[i]->key_oid == NULL)
1558 if (der_heim_oid_cmp(private_algs[i]->key_oid, oid) == 0)
1559 return private_algs[i];
1565 * Check if the algorithm `alg' have a best before date, and if it
1566 * des, make sure the its before the time `t'.
1570 _hx509_signature_best_before(hx509_context context,
1571 const AlgorithmIdentifier *alg,
1574 const struct signature_alg *md;
1576 md = find_sig_alg(&alg->algorithm);
1578 hx509_clear_error_string(context);
1579 return HX509_SIG_ALG_NO_SUPPORTED;
1581 if (md->best_before && md->best_before < t) {
1582 hx509_set_error_string(context, 0, HX509_CRYPTO_ALGORITHM_BEST_BEFORE,
1583 "Algorithm %s has passed it best before date",
1585 return HX509_CRYPTO_ALGORITHM_BEST_BEFORE;
1591 _hx509_self_signed_valid(hx509_context context,
1592 const AlgorithmIdentifier *alg)
1594 const struct signature_alg *md;
1596 md = find_sig_alg(&alg->algorithm);
1598 hx509_clear_error_string(context);
1599 return HX509_SIG_ALG_NO_SUPPORTED;
1601 if ((md->flags & SELF_SIGNED_OK) == 0) {
1602 hx509_set_error_string(context, 0, HX509_CRYPTO_ALGORITHM_BEST_BEFORE,
1603 "Algorithm %s not trusted for self signatures",
1605 return HX509_CRYPTO_ALGORITHM_BEST_BEFORE;
1612 _hx509_verify_signature(hx509_context context,
1613 const hx509_cert cert,
1614 const AlgorithmIdentifier *alg,
1615 const heim_octet_string *data,
1616 const heim_octet_string *sig)
1618 const struct signature_alg *md;
1619 const Certificate *signer = NULL;
1622 signer = _hx509_get_cert(cert);
1624 md = find_sig_alg(&alg->algorithm);
1626 hx509_clear_error_string(context);
1627 return HX509_SIG_ALG_NO_SUPPORTED;
1629 if (signer && (md->flags & PROVIDE_CONF) == 0) {
1630 hx509_clear_error_string(context);
1631 return HX509_CRYPTO_SIG_NO_CONF;
1633 if (signer == NULL && (md->flags & REQUIRE_SIGNER)) {
1634 hx509_clear_error_string(context);
1635 return HX509_CRYPTO_SIGNATURE_WITHOUT_SIGNER;
1637 if (md->key_oid && signer) {
1638 const SubjectPublicKeyInfo *spi;
1639 spi = &signer->tbsCertificate.subjectPublicKeyInfo;
1641 if (der_heim_oid_cmp(&spi->algorithm.algorithm, md->key_oid) != 0) {
1642 hx509_clear_error_string(context);
1643 return HX509_SIG_ALG_DONT_MATCH_KEY_ALG;
1646 return (*md->verify_signature)(context, md, signer, alg, data, sig);
1650 _hx509_create_signature(hx509_context context,
1651 const hx509_private_key signer,
1652 const AlgorithmIdentifier *alg,
1653 const heim_octet_string *data,
1654 AlgorithmIdentifier *signatureAlgorithm,
1655 heim_octet_string *sig)
1657 const struct signature_alg *md;
1659 md = find_sig_alg(&alg->algorithm);
1661 hx509_set_error_string(context, 0, HX509_SIG_ALG_NO_SUPPORTED,
1662 "algorithm no supported");
1663 return HX509_SIG_ALG_NO_SUPPORTED;
1666 if (signer && (md->flags & PROVIDE_CONF) == 0) {
1667 hx509_set_error_string(context, 0, HX509_SIG_ALG_NO_SUPPORTED,
1668 "algorithm provides no conf");
1669 return HX509_CRYPTO_SIG_NO_CONF;
1672 return (*md->create_signature)(context, md, signer, alg, data,
1673 signatureAlgorithm, sig);
1677 _hx509_create_signature_bitstring(hx509_context context,
1678 const hx509_private_key signer,
1679 const AlgorithmIdentifier *alg,
1680 const heim_octet_string *data,
1681 AlgorithmIdentifier *signatureAlgorithm,
1682 heim_bit_string *sig)
1684 heim_octet_string os;
1687 ret = _hx509_create_signature(context, signer, alg,
1688 data, signatureAlgorithm, &os);
1691 sig->data = os.data;
1692 sig->length = os.length * 8;
1697 _hx509_public_encrypt(hx509_context context,
1698 const heim_octet_string *cleartext,
1699 const Certificate *cert,
1700 heim_oid *encryption_oid,
1701 heim_octet_string *ciphertext)
1703 const SubjectPublicKeyInfo *spi;
1709 const unsigned char *p;
1711 ciphertext->data = NULL;
1712 ciphertext->length = 0;
1714 spi = &cert->tbsCertificate.subjectPublicKeyInfo;
1716 p = spi->subjectPublicKey.data;
1717 size = spi->subjectPublicKey.length / 8;
1719 rsa = d2i_RSAPublicKey(NULL, &p, size);
1721 hx509_set_error_string(context, 0, ENOMEM, "out of memory");
1725 tosize = RSA_size(rsa);
1726 to = malloc(tosize);
1729 hx509_set_error_string(context, 0, ENOMEM, "out of memory");
1733 ret = RSA_public_encrypt(cleartext->length,
1734 (unsigned char *)cleartext->data,
1735 to, rsa, RSA_PKCS1_PADDING);
1739 hx509_set_error_string(context, 0, HX509_CRYPTO_RSA_PUBLIC_ENCRYPT,
1740 "RSA public encrypt failed with %d", ret);
1741 return HX509_CRYPTO_RSA_PUBLIC_ENCRYPT;
1744 _hx509_abort("internal rsa decryption failure: ret > tosize");
1746 ciphertext->length = ret;
1747 ciphertext->data = to;
1749 ret = der_copy_oid(ASN1_OID_ID_PKCS1_RSAENCRYPTION, encryption_oid);
1751 der_free_octet_string(ciphertext);
1752 hx509_set_error_string(context, 0, ENOMEM, "out of memory");
1760 hx509_private_key_private_decrypt(hx509_context context,
1761 const heim_octet_string *ciphertext,
1762 const heim_oid *encryption_oid,
1763 hx509_private_key p,
1764 heim_octet_string *cleartext)
1768 cleartext->data = NULL;
1769 cleartext->length = 0;
1771 if (p->private_key.rsa == NULL) {
1772 hx509_set_error_string(context, 0, HX509_PRIVATE_KEY_MISSING,
1773 "Private RSA key missing");
1774 return HX509_PRIVATE_KEY_MISSING;
1777 cleartext->length = RSA_size(p->private_key.rsa);
1778 cleartext->data = malloc(cleartext->length);
1779 if (cleartext->data == NULL) {
1780 hx509_set_error_string(context, 0, ENOMEM, "out of memory");
1783 ret = RSA_private_decrypt(ciphertext->length, ciphertext->data,
1788 der_free_octet_string(cleartext);
1789 hx509_set_error_string(context, 0, HX509_CRYPTO_RSA_PRIVATE_DECRYPT,
1790 "Failed to decrypt using private key: %d", ret);
1791 return HX509_CRYPTO_RSA_PRIVATE_DECRYPT;
1793 if (cleartext->length < (size_t)ret)
1794 _hx509_abort("internal rsa decryption failure: ret > tosize");
1796 cleartext->length = ret;
1803 hx509_parse_private_key(hx509_context context,
1804 const AlgorithmIdentifier *keyai,
1807 hx509_key_format_t format,
1808 hx509_private_key *private_key)
1810 struct hx509_private_key_ops *ops;
1813 *private_key = NULL;
1815 ops = hx509_find_private_alg(&keyai->algorithm);
1817 hx509_clear_error_string(context);
1818 return HX509_SIG_ALG_NO_SUPPORTED;
1821 ret = hx509_private_key_init(private_key, ops, NULL);
1823 hx509_set_error_string(context, 0, ret, "out of memory");
1827 ret = (*ops->import)(context, keyai, data, len, format, *private_key);
1829 hx509_private_key_free(private_key);
1839 hx509_private_key2SPKI(hx509_context context,
1840 hx509_private_key private_key,
1841 SubjectPublicKeyInfo *spki)
1843 const struct hx509_private_key_ops *ops = private_key->ops;
1844 if (ops == NULL || ops->get_spki == NULL) {
1845 hx509_set_error_string(context, 0, HX509_UNIMPLEMENTED_OPERATION,
1846 "Private key have no key2SPKI function");
1847 return HX509_UNIMPLEMENTED_OPERATION;
1849 return (*ops->get_spki)(context, private_key, spki);
1853 _hx509_generate_private_key_init(hx509_context context,
1854 const heim_oid *oid,
1855 struct hx509_generate_private_context **ctx)
1859 if (der_heim_oid_cmp(oid, ASN1_OID_ID_PKCS1_RSAENCRYPTION) != 0) {
1860 hx509_set_error_string(context, 0, EINVAL,
1861 "private key not an RSA key");
1865 *ctx = calloc(1, sizeof(**ctx));
1867 hx509_set_error_string(context, 0, ENOMEM, "out of memory");
1870 (*ctx)->key_oid = oid;
1876 _hx509_generate_private_key_is_ca(hx509_context context,
1877 struct hx509_generate_private_context *ctx)
1884 _hx509_generate_private_key_bits(hx509_context context,
1885 struct hx509_generate_private_context *ctx,
1888 ctx->num_bits = bits;
1894 _hx509_generate_private_key_free(struct hx509_generate_private_context **ctx)
1901 _hx509_generate_private_key(hx509_context context,
1902 struct hx509_generate_private_context *ctx,
1903 hx509_private_key *private_key)
1905 struct hx509_private_key_ops *ops;
1908 *private_key = NULL;
1910 ops = hx509_find_private_alg(ctx->key_oid);
1912 hx509_clear_error_string(context);
1913 return HX509_SIG_ALG_NO_SUPPORTED;
1916 ret = hx509_private_key_init(private_key, ops, NULL);
1918 hx509_set_error_string(context, 0, ret, "out of memory");
1922 ret = (*ops->generate_private_key)(context, ctx, *private_key);
1924 hx509_private_key_free(private_key);
1933 const AlgorithmIdentifier *
1934 hx509_signature_sha512(void)
1935 { return &_hx509_signature_sha512_data; }
1937 const AlgorithmIdentifier *
1938 hx509_signature_sha384(void)
1939 { return &_hx509_signature_sha384_data; }
1941 const AlgorithmIdentifier *
1942 hx509_signature_sha256(void)
1943 { return &_hx509_signature_sha256_data; }
1945 const AlgorithmIdentifier *
1946 hx509_signature_sha1(void)
1947 { return &_hx509_signature_sha1_data; }
1949 const AlgorithmIdentifier *
1950 hx509_signature_md5(void)
1951 { return &_hx509_signature_md5_data; }
1953 const AlgorithmIdentifier *
1954 hx509_signature_ecPublicKey(void)
1955 { return &_hx509_signature_ecPublicKey; }
1957 const AlgorithmIdentifier *
1958 hx509_signature_ecdsa_with_sha256(void)
1959 { return &_hx509_signature_ecdsa_with_sha256_data; }
1961 const AlgorithmIdentifier *
1962 hx509_signature_ecdsa_with_sha1(void)
1963 { return &_hx509_signature_ecdsa_with_sha1_data; }
1965 const AlgorithmIdentifier *
1966 hx509_signature_rsa_with_sha512(void)
1967 { return &_hx509_signature_rsa_with_sha512_data; }
1969 const AlgorithmIdentifier *
1970 hx509_signature_rsa_with_sha384(void)
1971 { return &_hx509_signature_rsa_with_sha384_data; }
1973 const AlgorithmIdentifier *
1974 hx509_signature_rsa_with_sha256(void)
1975 { return &_hx509_signature_rsa_with_sha256_data; }
1977 const AlgorithmIdentifier *
1978 hx509_signature_rsa_with_sha1(void)
1979 { return &_hx509_signature_rsa_with_sha1_data; }
1981 const AlgorithmIdentifier *
1982 hx509_signature_rsa_with_md5(void)
1983 { return &_hx509_signature_rsa_with_md5_data; }
1985 const AlgorithmIdentifier *
1986 hx509_signature_rsa(void)
1987 { return &_hx509_signature_rsa_data; }
1989 const AlgorithmIdentifier *
1990 hx509_signature_rsa_pkcs1_x509(void)
1991 { return &_hx509_signature_rsa_pkcs1_x509_data; }
1993 const AlgorithmIdentifier *
1994 hx509_crypto_des_rsdi_ede3_cbc(void)
1995 { return &_hx509_des_rsdi_ede3_cbc_oid; }
1997 const AlgorithmIdentifier *
1998 hx509_crypto_aes128_cbc(void)
1999 { return &_hx509_crypto_aes128_cbc_data; }
2001 const AlgorithmIdentifier *
2002 hx509_crypto_aes256_cbc(void)
2003 { return &_hx509_crypto_aes256_cbc_data; }
2009 const AlgorithmIdentifier * _hx509_crypto_default_sig_alg =
2010 &_hx509_signature_rsa_with_sha256_data;
2011 const AlgorithmIdentifier * _hx509_crypto_default_digest_alg =
2012 &_hx509_signature_sha256_data;
2013 const AlgorithmIdentifier * _hx509_crypto_default_secret_alg =
2014 &_hx509_crypto_aes128_cbc_data;
2021 hx509_private_key_init(hx509_private_key *key,
2022 hx509_private_key_ops *ops,
2025 *key = calloc(1, sizeof(**key));
2030 (*key)->private_key.keydata = keydata;
2035 _hx509_private_key_ref(hx509_private_key key)
2038 _hx509_abort("key refcount <= 0 on ref");
2040 if (key->ref == UINT_MAX)
2041 _hx509_abort("key refcount == UINT_MAX on ref");
2046 _hx509_private_pem_name(hx509_private_key key)
2048 return key->ops->pemtype;
2052 hx509_private_key_free(hx509_private_key *key)
2054 if (key == NULL || *key == NULL)
2057 if ((*key)->ref == 0)
2058 _hx509_abort("key refcount == 0 on free");
2059 if (--(*key)->ref > 0)
2062 if ((*key)->ops && der_heim_oid_cmp((*key)->ops->key_oid, ASN1_OID_ID_PKCS1_RSAENCRYPTION) == 0) {
2063 if ((*key)->private_key.rsa)
2064 RSA_free((*key)->private_key.rsa);
2066 } else if ((*key)->ops && der_heim_oid_cmp((*key)->ops->key_oid, ASN1_OID_ID_ECPUBLICKEY) == 0) {
2067 if ((*key)->private_key.ecdsa)
2068 EC_KEY_free((*key)->private_key.ecdsa);
2071 (*key)->private_key.rsa = NULL;
2078 hx509_private_key_assign_rsa(hx509_private_key key, void *ptr)
2080 if (key->private_key.rsa)
2081 RSA_free(key->private_key.rsa);
2082 key->private_key.rsa = ptr;
2083 key->signature_alg = ASN1_OID_ID_PKCS1_SHA1WITHRSAENCRYPTION;
2084 key->md = &pkcs1_rsa_sha1_alg;
2088 _hx509_private_key_oid(hx509_context context,
2089 const hx509_private_key key,
2093 ret = der_copy_oid(key->ops->key_oid, data);
2095 hx509_set_error_string(context, 0, ret, "malloc out of memory");
2100 _hx509_private_key_exportable(hx509_private_key key)
2102 if (key->ops->export == NULL)
2108 _hx509_private_key_get_internal(hx509_context context,
2109 hx509_private_key key,
2112 if (key->ops->get_internal == NULL)
2114 return (*key->ops->get_internal)(context, key, type);
2118 _hx509_private_key_export(hx509_context context,
2119 const hx509_private_key key,
2120 hx509_key_format_t format,
2121 heim_octet_string *data)
2123 if (key->ops->export == NULL) {
2124 hx509_clear_error_string(context);
2125 return HX509_UNIMPLEMENTED_OPERATION;
2127 return (*key->ops->export)(context, key, format, data);
2134 struct hx509cipher {
2137 #define CIPHER_WEAK 1
2138 const heim_oid *oid;
2139 const AlgorithmIdentifier *(*ai_func)(void);
2140 const EVP_CIPHER *(*evp_func)(void);
2141 int (*get_params)(hx509_context, const hx509_crypto,
2142 const heim_octet_string *, heim_octet_string *);
2143 int (*set_params)(hx509_context, const heim_octet_string *,
2144 hx509_crypto, heim_octet_string *);
2147 struct hx509_crypto_data {
2150 #define ALLOW_WEAK 1
2152 #define PADDING_NONE 2
2153 #define PADDING_PKCS7 4
2154 #define PADDING_FLAGS (2|4)
2155 const struct hx509cipher *cipher;
2156 const EVP_CIPHER *c;
2157 heim_octet_string key;
2166 static unsigned private_rc2_40_oid_data[] = { 127, 1 };
2168 static heim_oid asn1_oid_private_rc2_40 =
2169 { 2, private_rc2_40_oid_data };
2176 CMSCBCParam_get(hx509_context context, const hx509_crypto crypto,
2177 const heim_octet_string *ivec, heim_octet_string *param)
2182 assert(crypto->param == NULL);
2186 ASN1_MALLOC_ENCODE(CMSCBCParameter, param->data, param->length,
2188 if (ret == 0 && size != param->length)
2189 _hx509_abort("Internal asn1 encoder failure");
2191 hx509_clear_error_string(context);
2196 CMSCBCParam_set(hx509_context context, const heim_octet_string *param,
2197 hx509_crypto crypto, heim_octet_string *ivec)
2203 ret = decode_CMSCBCParameter(param->data, param->length, ivec, NULL);
2205 hx509_clear_error_string(context);
2210 struct _RC2_params {
2211 int maximum_effective_key;
2215 CMSRC2CBCParam_get(hx509_context context, const hx509_crypto crypto,
2216 const heim_octet_string *ivec, heim_octet_string *param)
2218 CMSRC2CBCParameter rc2params;
2219 const struct _RC2_params *p = crypto->param;
2220 int maximum_effective_key = 128;
2224 memset(&rc2params, 0, sizeof(rc2params));
2227 maximum_effective_key = p->maximum_effective_key;
2229 switch(maximum_effective_key) {
2231 rc2params.rc2ParameterVersion = 160;
2234 rc2params.rc2ParameterVersion = 120;
2237 rc2params.rc2ParameterVersion = 58;
2240 rc2params.iv = *ivec;
2242 ASN1_MALLOC_ENCODE(CMSRC2CBCParameter, param->data, param->length,
2243 &rc2params, &size, ret);
2244 if (ret == 0 && size != param->length)
2245 _hx509_abort("Internal asn1 encoder failure");
2251 CMSRC2CBCParam_set(hx509_context context, const heim_octet_string *param,
2252 hx509_crypto crypto, heim_octet_string *ivec)
2254 CMSRC2CBCParameter rc2param;
2255 struct _RC2_params *p;
2259 ret = decode_CMSRC2CBCParameter(param->data, param->length,
2262 hx509_clear_error_string(context);
2266 p = calloc(1, sizeof(*p));
2268 free_CMSRC2CBCParameter(&rc2param);
2269 hx509_clear_error_string(context);
2272 switch(rc2param.rc2ParameterVersion) {
2274 crypto->c = EVP_rc2_40_cbc();
2275 p->maximum_effective_key = 40;
2278 crypto->c = EVP_rc2_64_cbc();
2279 p->maximum_effective_key = 64;
2282 crypto->c = EVP_rc2_cbc();
2283 p->maximum_effective_key = 128;
2287 free_CMSRC2CBCParameter(&rc2param);
2288 return HX509_CRYPTO_SIG_INVALID_FORMAT;
2291 ret = der_copy_octet_string(&rc2param.iv, ivec);
2292 free_CMSRC2CBCParameter(&rc2param);
2295 hx509_clear_error_string(context);
2306 static const struct hx509cipher ciphers[] = {
2310 ASN1_OID_ID_PKCS3_RC2_CBC,
2319 ASN1_OID_ID_RSADSI_RC2_CBC,
2328 &asn1_oid_private_rc2_40,
2337 ASN1_OID_ID_PKCS3_DES_EDE3_CBC,
2346 ASN1_OID_ID_RSADSI_DES_EDE3_CBC,
2347 hx509_crypto_des_rsdi_ede3_cbc,
2355 ASN1_OID_ID_AES_128_CBC,
2356 hx509_crypto_aes128_cbc,
2364 ASN1_OID_ID_AES_192_CBC,
2373 ASN1_OID_ID_AES_256_CBC,
2374 hx509_crypto_aes256_cbc,
2381 static const struct hx509cipher *
2382 find_cipher_by_oid(const heim_oid *oid)
2386 for (i = 0; i < sizeof(ciphers)/sizeof(ciphers[0]); i++)
2387 if (der_heim_oid_cmp(oid, ciphers[i].oid) == 0)
2393 static const struct hx509cipher *
2394 find_cipher_by_name(const char *name)
2398 for (i = 0; i < sizeof(ciphers)/sizeof(ciphers[0]); i++)
2399 if (strcasecmp(name, ciphers[i].name) == 0)
2407 hx509_crypto_enctype_by_name(const char *name)
2409 const struct hx509cipher *cipher;
2411 cipher = find_cipher_by_name(name);
2418 hx509_crypto_init(hx509_context context,
2419 const char *provider,
2420 const heim_oid *enctype,
2421 hx509_crypto *crypto)
2423 const struct hx509cipher *cipher;
2427 cipher = find_cipher_by_oid(enctype);
2428 if (cipher == NULL) {
2429 hx509_set_error_string(context, 0, HX509_ALG_NOT_SUPP,
2430 "Algorithm not supported");
2431 return HX509_ALG_NOT_SUPP;
2434 *crypto = calloc(1, sizeof(**crypto));
2435 if (*crypto == NULL) {
2436 hx509_clear_error_string(context);
2440 (*crypto)->flags = PADDING_PKCS7;
2441 (*crypto)->cipher = cipher;
2442 (*crypto)->c = (*cipher->evp_func)();
2444 if (der_copy_oid(enctype, &(*crypto)->oid)) {
2445 hx509_crypto_destroy(*crypto);
2447 hx509_clear_error_string(context);
2455 hx509_crypto_provider(hx509_crypto crypto)
2461 hx509_crypto_destroy(hx509_crypto crypto)
2465 if (crypto->key.data)
2466 free(crypto->key.data);
2468 free(crypto->param);
2469 der_free_oid(&crypto->oid);
2470 memset(crypto, 0, sizeof(*crypto));
2475 hx509_crypto_set_key_name(hx509_crypto crypto, const char *name)
2481 hx509_crypto_allow_weak(hx509_crypto crypto)
2483 crypto->flags |= ALLOW_WEAK;
2487 hx509_crypto_set_padding(hx509_crypto crypto, int padding_type)
2489 switch (padding_type) {
2490 case HX509_CRYPTO_PADDING_PKCS7:
2491 crypto->flags &= ~PADDING_FLAGS;
2492 crypto->flags |= PADDING_PKCS7;
2494 case HX509_CRYPTO_PADDING_NONE:
2495 crypto->flags &= ~PADDING_FLAGS;
2496 crypto->flags |= PADDING_NONE;
2499 _hx509_abort("Invalid padding");
2504 hx509_crypto_set_key_data(hx509_crypto crypto, const void *data, size_t length)
2506 if (EVP_CIPHER_key_length(crypto->c) > (int)length)
2507 return HX509_CRYPTO_INTERNAL_ERROR;
2509 if (crypto->key.data) {
2510 free(crypto->key.data);
2511 crypto->key.data = NULL;
2512 crypto->key.length = 0;
2514 crypto->key.data = malloc(length);
2515 if (crypto->key.data == NULL)
2517 memcpy(crypto->key.data, data, length);
2518 crypto->key.length = length;
2524 hx509_crypto_set_random_key(hx509_crypto crypto, heim_octet_string *key)
2526 if (crypto->key.data) {
2527 free(crypto->key.data);
2528 crypto->key.length = 0;
2531 crypto->key.length = EVP_CIPHER_key_length(crypto->c);
2532 crypto->key.data = malloc(crypto->key.length);
2533 if (crypto->key.data == NULL) {
2534 crypto->key.length = 0;
2537 if (RAND_bytes(crypto->key.data, crypto->key.length) <= 0) {
2538 free(crypto->key.data);
2539 crypto->key.data = NULL;
2540 crypto->key.length = 0;
2541 return HX509_CRYPTO_INTERNAL_ERROR;
2544 return der_copy_octet_string(&crypto->key, key);
2550 hx509_crypto_set_params(hx509_context context,
2551 hx509_crypto crypto,
2552 const heim_octet_string *param,
2553 heim_octet_string *ivec)
2555 return (*crypto->cipher->set_params)(context, param, crypto, ivec);
2559 hx509_crypto_get_params(hx509_context context,
2560 hx509_crypto crypto,
2561 const heim_octet_string *ivec,
2562 heim_octet_string *param)
2564 return (*crypto->cipher->get_params)(context, crypto, ivec, param);
2568 hx509_crypto_random_iv(hx509_crypto crypto, heim_octet_string *ivec)
2570 ivec->length = EVP_CIPHER_iv_length(crypto->c);
2571 ivec->data = malloc(ivec->length);
2572 if (ivec->data == NULL) {
2577 if (RAND_bytes(ivec->data, ivec->length) <= 0) {
2581 return HX509_CRYPTO_INTERNAL_ERROR;
2587 hx509_crypto_encrypt(hx509_crypto crypto,
2589 const size_t length,
2590 const heim_octet_string *ivec,
2591 heim_octet_string **ciphertext)
2593 EVP_CIPHER_CTX *evp;
2594 size_t padsize, bsize;
2599 if ((crypto->cipher->flags & CIPHER_WEAK) &&
2600 (crypto->flags & ALLOW_WEAK) == 0)
2601 return HX509_CRYPTO_ALGORITHM_BEST_BEFORE;
2603 assert(EVP_CIPHER_iv_length(crypto->c) == (int)ivec->length);
2605 evp = EVP_CIPHER_CTX_new();
2609 ret = EVP_CipherInit_ex(evp, crypto->c, NULL,
2610 crypto->key.data, ivec->data, 1);
2612 ret = HX509_CRYPTO_INTERNAL_ERROR;
2616 *ciphertext = calloc(1, sizeof(**ciphertext));
2617 if (*ciphertext == NULL) {
2622 assert(crypto->flags & PADDING_FLAGS);
2624 bsize = EVP_CIPHER_block_size(crypto->c);
2627 if (crypto->flags & PADDING_NONE) {
2628 if (bsize != 1 && (length % bsize) != 0)
2629 return HX509_CMS_PADDING_ERROR;
2630 } else if (crypto->flags & PADDING_PKCS7) {
2632 padsize = bsize - (length % bsize);
2635 (*ciphertext)->length = length + padsize;
2636 (*ciphertext)->data = malloc(length + padsize);
2637 if ((*ciphertext)->data == NULL) {
2642 memcpy((*ciphertext)->data, data, length);
2645 unsigned char *p = (*ciphertext)->data;
2647 for (i = 0; i < padsize; i++)
2651 ret = EVP_Cipher(evp, (*ciphertext)->data,
2652 (*ciphertext)->data,
2655 ret = HX509_CRYPTO_INTERNAL_ERROR;
2663 if ((*ciphertext)->data) {
2664 free((*ciphertext)->data);
2670 EVP_CIPHER_CTX_free(evp);
2676 hx509_crypto_decrypt(hx509_crypto crypto,
2678 const size_t length,
2679 heim_octet_string *ivec,
2680 heim_octet_string *clear)
2682 EVP_CIPHER_CTX *evp;
2689 if ((crypto->cipher->flags & CIPHER_WEAK) &&
2690 (crypto->flags & ALLOW_WEAK) == 0)
2691 return HX509_CRYPTO_ALGORITHM_BEST_BEFORE;
2693 if (ivec && EVP_CIPHER_iv_length(crypto->c) < (int)ivec->length)
2694 return HX509_CRYPTO_INTERNAL_ERROR;
2696 if (crypto->key.data == NULL)
2697 return HX509_CRYPTO_INTERNAL_ERROR;
2702 evp = EVP_CIPHER_CTX_new();
2706 ret = EVP_CipherInit_ex(evp, crypto->c, NULL,
2707 crypto->key.data, idata, 0);
2709 EVP_CIPHER_CTX_free(evp);
2710 return HX509_CRYPTO_INTERNAL_ERROR;
2713 clear->length = length;
2714 clear->data = malloc(length);
2715 if (clear->data == NULL) {
2716 EVP_CIPHER_CTX_free(evp);
2721 if (EVP_Cipher(evp, clear->data, data, length) != 1) {
2722 EVP_CIPHER_CTX_free(evp);
2723 return HX509_CRYPTO_INTERNAL_ERROR;
2725 EVP_CIPHER_CTX_free(evp);
2727 if ((crypto->flags & PADDING_PKCS7) && EVP_CIPHER_block_size(crypto->c) > 1) {
2730 int j, bsize = EVP_CIPHER_block_size(crypto->c);
2732 if ((int)clear->length < bsize) {
2733 ret = HX509_CMS_PADDING_ERROR;
2738 p += clear->length - 1;
2740 if (padsize > bsize) {
2741 ret = HX509_CMS_PADDING_ERROR;
2744 clear->length -= padsize;
2745 for (j = 0; j < padsize; j++) {
2746 if (*p-- != padsize) {
2747 ret = HX509_CMS_PADDING_ERROR;
2763 typedef int (*PBE_string2key_func)(hx509_context,
2765 const heim_octet_string *,
2766 hx509_crypto *, heim_octet_string *,
2767 heim_octet_string *,
2768 const heim_oid *, const EVP_MD *);
2771 PBE_string2key(hx509_context context,
2772 const char *password,
2773 const heim_octet_string *parameters,
2774 hx509_crypto *crypto,
2775 heim_octet_string *key, heim_octet_string *iv,
2776 const heim_oid *enc_oid,
2779 PKCS12_PBEParams p12params;
2782 int iter, saltlen, ret;
2783 unsigned char *salt;
2785 passwordlen = password ? strlen(password) : 0;
2787 if (parameters == NULL)
2788 return HX509_ALG_NOT_SUPP;
2790 ret = decode_PKCS12_PBEParams(parameters->data,
2796 if (p12params.iterations)
2797 iter = *p12params.iterations;
2800 salt = p12params.salt.data;
2801 saltlen = p12params.salt.length;
2803 if (!PKCS12_key_gen (password, passwordlen, salt, saltlen,
2804 PKCS12_KEY_ID, iter, key->length, key->data, md)) {
2805 ret = HX509_CRYPTO_INTERNAL_ERROR;
2809 if (!PKCS12_key_gen (password, passwordlen, salt, saltlen,
2810 PKCS12_IV_ID, iter, iv->length, iv->data, md)) {
2811 ret = HX509_CRYPTO_INTERNAL_ERROR;
2815 ret = hx509_crypto_init(context, NULL, enc_oid, &c);
2819 hx509_crypto_allow_weak(c);
2821 ret = hx509_crypto_set_key_data(c, key->data, key->length);
2823 hx509_crypto_destroy(c);
2829 free_PKCS12_PBEParams(&p12params);
2833 static const heim_oid *
2834 find_string2key(const heim_oid *oid,
2835 const EVP_CIPHER **c,
2837 PBE_string2key_func *s2k)
2839 if (der_heim_oid_cmp(oid, ASN1_OID_ID_PBEWITHSHAAND40BITRC2_CBC) == 0) {
2840 *c = EVP_rc2_40_cbc();
2842 *s2k = PBE_string2key;
2843 return &asn1_oid_private_rc2_40;
2844 } else if (der_heim_oid_cmp(oid, ASN1_OID_ID_PBEWITHSHAAND128BITRC2_CBC) == 0) {
2847 *s2k = PBE_string2key;
2848 return ASN1_OID_ID_PKCS3_RC2_CBC;
2850 } else if (der_heim_oid_cmp(oid, ASN1_OID_ID_PBEWITHSHAAND40BITRC4) == 0) {
2853 *s2k = PBE_string2key;
2855 } else if (der_heim_oid_cmp(oid, ASN1_OID_ID_PBEWITHSHAAND128BITRC4) == 0) {
2858 *s2k = PBE_string2key;
2859 return ASN1_OID_ID_PKCS3_RC4;
2861 } else if (der_heim_oid_cmp(oid, ASN1_OID_ID_PBEWITHSHAAND3_KEYTRIPLEDES_CBC) == 0) {
2862 *c = EVP_des_ede3_cbc();
2864 *s2k = PBE_string2key;
2865 return ASN1_OID_ID_PKCS3_DES_EDE3_CBC;
2876 _hx509_pbe_encrypt(hx509_context context,
2878 const AlgorithmIdentifier *ai,
2879 const heim_octet_string *content,
2880 heim_octet_string *econtent)
2882 hx509_clear_error_string(context);
2891 _hx509_pbe_decrypt(hx509_context context,
2893 const AlgorithmIdentifier *ai,
2894 const heim_octet_string *econtent,
2895 heim_octet_string *content)
2897 const struct _hx509_password *pw;
2898 heim_octet_string key, iv;
2899 const heim_oid *enc_oid;
2900 const EVP_CIPHER *c;
2902 PBE_string2key_func s2k;
2906 memset(&key, 0, sizeof(key));
2907 memset(&iv, 0, sizeof(iv));
2909 memset(content, 0, sizeof(*content));
2911 enc_oid = find_string2key(&ai->algorithm, &c, &md, &s2k);
2912 if (enc_oid == NULL) {
2913 hx509_set_error_string(context, 0, HX509_ALG_NOT_SUPP,
2914 "String to key algorithm not supported");
2915 ret = HX509_ALG_NOT_SUPP;
2919 key.length = EVP_CIPHER_key_length(c);
2920 key.data = malloc(key.length);
2921 if (key.data == NULL) {
2923 hx509_clear_error_string(context);
2927 iv.length = EVP_CIPHER_iv_length(c);
2928 iv.data = malloc(iv.length);
2929 if (iv.data == NULL) {
2931 hx509_clear_error_string(context);
2935 pw = _hx509_lock_get_passwords(lock);
2937 ret = HX509_CRYPTO_INTERNAL_ERROR;
2938 for (i = 0; i < pw->len + 1; i++) {
2939 hx509_crypto crypto;
2940 const char *password;
2943 password = pw->val[i];
2944 else if (i < pw->len + 1)
2949 ret = (*s2k)(context, password, ai->parameters, &crypto,
2950 &key, &iv, enc_oid, md);
2954 ret = hx509_crypto_decrypt(crypto,
2959 hx509_crypto_destroy(crypto);
2966 der_free_octet_string(&key);
2968 der_free_octet_string(&iv);
2978 match_keys_rsa(hx509_cert c, hx509_private_key private_key)
2980 const Certificate *cert;
2981 const SubjectPublicKeyInfo *spi;
2984 const BIGNUM *d, *p, *q, *dmp1, *dmq1, *iqmp;
2985 BIGNUM *new_d, *new_p, *new_q, *new_dmp1, *new_dmq1, *new_iqmp, *n, *e;
2989 if (private_key->private_key.rsa == NULL)
2992 rsa = private_key->private_key.rsa;
2993 RSA_get0_key(rsa, NULL, NULL, &d);
2994 RSA_get0_factors(rsa, &p, &q);
2995 RSA_get0_crt_params(rsa, &dmp1, &dmq1, &iqmp);
2996 if (d == NULL || p == NULL || q == NULL)
2999 cert = _hx509_get_cert(c);
3000 spi = &cert->tbsCertificate.subjectPublicKeyInfo;
3006 ret = decode_RSAPublicKey(spi->subjectPublicKey.data,
3007 spi->subjectPublicKey.length / 8,
3013 n = heim_int2BN(&pk.modulus);
3014 e = heim_int2BN(&pk.publicExponent);
3016 free_RSAPublicKey(&pk);
3021 new_dmp1 = BN_dup(dmp1);
3022 new_dmq1 = BN_dup(dmq1);
3023 new_iqmp = BN_dup(iqmp);
3025 if (n == NULL || e == NULL ||
3026 new_d == NULL || new_p == NULL|| new_q == NULL ||
3027 new_dmp1 == NULL || new_dmq1 == NULL || new_iqmp == NULL) {
3040 ret = RSA_set0_key(rsa, new_d, n, e);
3055 ret = RSA_set0_factors(rsa, new_p, new_q);
3067 ret = RSA_set0_crt_params(rsa, new_dmp1, new_dmq1, new_iqmp);
3077 ret = RSA_check_key(rsa);
3084 match_keys_ec(hx509_cert c, hx509_private_key private_key)
3086 return 1; /* XXX use EC_KEY_check_key */
3091 _hx509_match_keys(hx509_cert c, hx509_private_key key)
3093 if (der_heim_oid_cmp(key->ops->key_oid, ASN1_OID_ID_PKCS1_RSAENCRYPTION) == 0)
3094 return match_keys_rsa(c, key);
3095 if (der_heim_oid_cmp(key->ops->key_oid, ASN1_OID_ID_ECPUBLICKEY) == 0)
3096 return match_keys_ec(c, key);
3102 static const heim_oid *
3103 find_keytype(const hx509_private_key key)
3105 const struct signature_alg *md;
3110 md = find_sig_alg(key->signature_alg);
3117 hx509_crypto_select(const hx509_context context,
3119 const hx509_private_key source,
3120 hx509_peer_info peer,
3121 AlgorithmIdentifier *selected)
3123 const AlgorithmIdentifier *def = NULL;
3127 memset(selected, 0, sizeof(*selected));
3129 if (type == HX509_SELECT_DIGEST) {
3132 def = alg_for_privatekey(source, type);
3134 def = _hx509_crypto_default_digest_alg;
3135 } else if (type == HX509_SELECT_PUBLIC_SIG) {
3136 bits = SIG_PUBLIC_SIG;
3137 /* XXX depend on `source´ and `peer´ */
3139 def = alg_for_privatekey(source, type);
3141 def = _hx509_crypto_default_sig_alg;
3142 } else if (type == HX509_SELECT_SECRET_ENC) {
3144 def = _hx509_crypto_default_secret_alg;
3146 hx509_set_error_string(context, 0, EINVAL,
3147 "Unknown type %d of selection", type);
3152 const heim_oid *keytype = NULL;
3154 keytype = find_keytype(source);
3156 for (i = 0; i < peer->len; i++) {
3157 for (j = 0; sig_algs[j]; j++) {
3158 if ((sig_algs[j]->flags & bits) != bits)
3160 if (der_heim_oid_cmp(sig_algs[j]->sig_oid,
3161 &peer->val[i].algorithm) != 0)
3163 if (keytype && sig_algs[j]->key_oid &&
3164 der_heim_oid_cmp(keytype, sig_algs[j]->key_oid))
3167 /* found one, use that */
3168 ret = copy_AlgorithmIdentifier(&peer->val[i], selected);
3170 hx509_clear_error_string(context);
3173 if (bits & SIG_SECRET) {
3174 const struct hx509cipher *cipher;
3176 cipher = find_cipher_by_oid(&peer->val[i].algorithm);
3179 if (cipher->ai_func == NULL)
3181 ret = copy_AlgorithmIdentifier(cipher->ai_func(), selected);
3183 hx509_clear_error_string(context);
3190 ret = copy_AlgorithmIdentifier(def, selected);
3192 hx509_clear_error_string(context);
3197 hx509_crypto_available(hx509_context context,
3200 AlgorithmIdentifier **val,
3203 const heim_oid *keytype = NULL;
3204 unsigned int len, i;
3210 if (type == HX509_SELECT_ALL) {
3211 bits = SIG_DIGEST | SIG_PUBLIC_SIG | SIG_SECRET;
3212 } else if (type == HX509_SELECT_DIGEST) {
3214 } else if (type == HX509_SELECT_PUBLIC_SIG) {
3215 bits = SIG_PUBLIC_SIG;
3217 hx509_set_error_string(context, 0, EINVAL,
3218 "Unknown type %d of available", type);
3223 keytype = find_keytype(_hx509_cert_private_key(source));
3226 for (i = 0; sig_algs[i]; i++) {
3227 if ((sig_algs[i]->flags & bits) == 0)
3229 if (sig_algs[i]->sig_alg == NULL)
3231 if (keytype && sig_algs[i]->key_oid &&
3232 der_heim_oid_cmp(sig_algs[i]->key_oid, keytype))
3235 /* found one, add that to the list */
3236 ptr = realloc(*val, sizeof(**val) * (len + 1));
3241 ret = copy_AlgorithmIdentifier(sig_algs[i]->sig_alg, &(*val)[len]);
3248 if (bits & SIG_SECRET) {
3250 for (i = 0; i < sizeof(ciphers)/sizeof(ciphers[0]); i++) {
3252 if (ciphers[i].flags & CIPHER_WEAK)
3254 if (ciphers[i].ai_func == NULL)
3257 ptr = realloc(*val, sizeof(**val) * (len + 1));
3262 ret = copy_AlgorithmIdentifier((ciphers[i].ai_func)(), &(*val)[len]);
3273 for (i = 0; i < len; i++)
3274 free_AlgorithmIdentifier(&(*val)[i]);
3277 hx509_set_error_string(context, 0, ENOMEM, "out of memory");
3282 hx509_crypto_free_algs(AlgorithmIdentifier *val,
3286 for (i = 0; i < len; i++)
3287 free_AlgorithmIdentifier(&val[i]);