2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 1999-2002 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
62 #include <openssl/x509.h>
63 #include <openssl/rand.h>
65 #ifndef OPENSSL_NO_DSA
66 static int dsa_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8inf, EVP_PKEY *pkey);
69 static int eckey_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8inf, EVP_PKEY *pkey);
72 /* Extract a private key from a PKCS8 structure */
74 EVP_PKEY *EVP_PKCS82PKEY (PKCS8_PRIV_KEY_INFO *p8)
76 EVP_PKEY *pkey = NULL;
77 #ifndef OPENSSL_NO_RSA
80 #ifndef OPENSSL_NO_DSA
83 STACK_OF(ASN1_TYPE) *ndsa = NULL;
88 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_EC)
89 ASN1_TYPE *param = NULL;
90 ASN1_INTEGER *privkey;
96 const unsigned char *cp;
101 if(p8->pkey->type == V_ASN1_OCTET_STRING) {
102 p8->broken = PKCS8_OK;
103 p = p8->pkey->value.octet_string->data;
104 pkeylen = p8->pkey->value.octet_string->length;
106 p8->broken = PKCS8_NO_OCTET;
107 p = p8->pkey->value.sequence->data;
108 pkeylen = p8->pkey->value.sequence->length;
110 if (!(pkey = EVP_PKEY_new())) {
111 EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
115 nid = OBJ_obj2nid(a->algorithm);
118 #ifndef OPENSSL_NO_RSA
119 case NID_rsaEncryption:
121 if (!(rsa = d2i_RSAPrivateKey (NULL,&cp, pkeylen))) {
122 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
125 EVP_PKEY_assign_RSA (pkey, rsa);
128 #ifndef OPENSSL_NO_DSA
130 /* PKCS#8 DSA is weird: you just get a private key integer
131 * and parameters in the AlgorithmIdentifier the pubkey must
135 /* Check for broken DSA PKCS#8, UGH! */
136 if(*p == (V_ASN1_SEQUENCE|V_ASN1_CONSTRUCTED)) {
137 if(!(ndsa = ASN1_seq_unpack_ASN1_TYPE(p, pkeylen,
140 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
143 if(sk_ASN1_TYPE_num(ndsa) != 2 ) {
144 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
147 /* Handle Two broken types:
148 * SEQUENCE {parameters, priv_key}
149 * SEQUENCE {pub_key, priv_key}
152 t1 = sk_ASN1_TYPE_value(ndsa, 0);
153 t2 = sk_ASN1_TYPE_value(ndsa, 1);
154 if(t1->type == V_ASN1_SEQUENCE) {
155 p8->broken = PKCS8_EMBEDDED_PARAM;
157 } else if(a->parameter->type == V_ASN1_SEQUENCE) {
158 p8->broken = PKCS8_NS_DB;
159 param = a->parameter;
161 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
165 if(t2->type != V_ASN1_INTEGER) {
166 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
169 privkey = t2->value.integer;
171 if (!(privkey=d2i_ASN1_INTEGER (NULL, &p, pkeylen))) {
172 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
175 param = p8->pkeyalg->parameter;
177 if (!param || (param->type != V_ASN1_SEQUENCE)) {
178 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
181 cp = p = param->value.sequence->data;
182 plen = param->value.sequence->length;
183 if (!(dsa = d2i_DSAparams (NULL, &cp, plen))) {
184 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
187 /* We have parameters now set private key */
188 if (!(dsa->priv_key = ASN1_INTEGER_to_BN(privkey, NULL))) {
189 EVPerr(EVP_F_EVP_PKCS82PKEY,EVP_R_BN_DECODE_ERROR);
192 /* Calculate public key (ouch!) */
193 if (!(dsa->pub_key = BN_new())) {
194 EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
197 if (!(ctx = BN_CTX_new())) {
198 EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
202 if (!BN_mod_exp(dsa->pub_key, dsa->g,
203 dsa->priv_key, dsa->p, ctx)) {
205 EVPerr(EVP_F_EVP_PKCS82PKEY,EVP_R_BN_PUBKEY_ERROR);
209 EVP_PKEY_assign_DSA(pkey, dsa);
211 if(ndsa) sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
212 else ASN1_INTEGER_free(privkey);
216 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
222 #ifndef OPENSSL_NO_EC
223 case NID_X9_62_id_ecPublicKey:
224 if (!(privkey=d2i_ASN1_INTEGER (NULL, &p, pkeylen)))
226 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
229 param = p8->pkeyalg->parameter;
231 if (!param || ((param->type != V_ASN1_SEQUENCE) &&
232 (param->type != V_ASN1_OBJECT)))
234 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
238 if (param->type == V_ASN1_SEQUENCE)
240 cp = p = param->value.sequence->data;
241 plen = param->value.sequence->length;
243 if (!(eckey = d2i_ECParameters(NULL, &cp, plen)))
245 EVPerr(EVP_F_EVP_PKCS82PKEY,
252 cp = p = param->value.object->data;
253 plen = param->value.object->length;
255 /* type == V_ASN1_OBJECT => the parameters are given
258 if ((eckey = EC_KEY_new()) == NULL)
260 EVPerr(EVP_F_EVP_PKCS82PKEY,
261 ERR_R_MALLOC_FAILURE);
264 if ((eckey->group = EC_GROUP_new_by_nid(
265 OBJ_obj2nid(a->parameter->value.object))) == NULL)
267 EC_GROUP_set_asn1_flag(eckey->group,
268 OPENSSL_EC_NAMED_CURVE);
271 /* We have parameters now set private key */
272 if (!(eckey->priv_key = ASN1_INTEGER_to_BN(privkey, NULL)))
274 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_BN_DECODE_ERROR);
277 /* Calculate public key */
278 if ((eckey->pub_key = EC_POINT_new(eckey->group)) == NULL)
280 EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_EC_LIB);
283 if (!EC_POINT_copy(eckey->pub_key,
284 EC_GROUP_get0_generator(eckey->group)))
286 EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_EC_LIB);
289 if (!EC_POINT_mul(eckey->group, eckey->pub_key,
290 eckey->priv_key, NULL, NULL, ctx))
292 EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_EC_LIB);
296 EVP_PKEY_assign_EC_KEY(pkey, eckey);
300 ASN1_INTEGER_free(privkey);
312 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
313 if (!a->algorithm) strcpy (obj_tmp, "NULL");
314 else i2t_ASN1_OBJECT(obj_tmp, 80, a->algorithm);
315 ERR_add_error_data(2, "TYPE=", obj_tmp);
316 EVP_PKEY_free (pkey);
322 PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(EVP_PKEY *pkey)
324 return EVP_PKEY2PKCS8_broken(pkey, PKCS8_OK);
327 /* Turn a private key into a PKCS8 structure */
329 PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8_broken(EVP_PKEY *pkey, int broken)
331 PKCS8_PRIV_KEY_INFO *p8;
333 if (!(p8 = PKCS8_PRIV_KEY_INFO_new())) {
334 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
338 ASN1_INTEGER_set (p8->version, 0);
339 if (!(p8->pkeyalg->parameter = ASN1_TYPE_new ())) {
340 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
341 PKCS8_PRIV_KEY_INFO_free (p8);
344 p8->pkey->type = V_ASN1_OCTET_STRING;
345 switch (EVP_PKEY_type(pkey->type)) {
346 #ifndef OPENSSL_NO_RSA
349 if(p8->broken == PKCS8_NO_OCTET) p8->pkey->type = V_ASN1_SEQUENCE;
351 p8->pkeyalg->algorithm = OBJ_nid2obj(NID_rsaEncryption);
352 p8->pkeyalg->parameter->type = V_ASN1_NULL;
353 if (!ASN1_pack_string ((char *)pkey, i2d_PrivateKey,
354 &p8->pkey->value.octet_string)) {
355 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
356 PKCS8_PRIV_KEY_INFO_free (p8);
361 #ifndef OPENSSL_NO_DSA
363 if(!dsa_pkey2pkcs8(p8, pkey)) {
364 PKCS8_PRIV_KEY_INFO_free (p8);
370 #ifndef OPENSSL_NO_EC
372 if (!eckey_pkey2pkcs8(p8, pkey))
374 PKCS8_PRIV_KEY_INFO_free(p8);
380 EVPerr(EVP_F_EVP_PKEY2PKCS8, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
381 PKCS8_PRIV_KEY_INFO_free (p8);
384 RAND_add(p8->pkey->value.octet_string->data,
385 p8->pkey->value.octet_string->length, 0);
389 PKCS8_PRIV_KEY_INFO *PKCS8_set_broken(PKCS8_PRIV_KEY_INFO *p8, int broken)
394 p8->broken = PKCS8_OK;
399 p8->broken = PKCS8_NO_OCTET;
400 p8->pkey->type = V_ASN1_SEQUENCE;
405 EVPerr(EVP_F_EVP_PKCS8_SET_BROKEN,EVP_R_PKCS8_UNKNOWN_BROKEN_TYPE);
412 #ifndef OPENSSL_NO_DSA
413 static int dsa_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8, EVP_PKEY *pkey)
418 STACK_OF(ASN1_TYPE) *ndsa;
419 unsigned char *p, *q;
422 p8->pkeyalg->algorithm = OBJ_nid2obj(NID_dsa);
423 len = i2d_DSAparams (pkey->pkey.dsa, NULL);
424 if (!(p = OPENSSL_malloc(len))) {
425 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
426 PKCS8_PRIV_KEY_INFO_free (p8);
430 i2d_DSAparams (pkey->pkey.dsa, &q);
431 params = ASN1_STRING_new();
432 ASN1_STRING_set(params, p, len);
434 /* Get private key into integer */
435 if (!(prkey = BN_to_ASN1_INTEGER (pkey->pkey.dsa->priv_key, NULL))) {
436 EVPerr(EVP_F_EVP_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
445 if (!ASN1_pack_string((char *)prkey, i2d_ASN1_INTEGER,
446 &p8->pkey->value.octet_string)) {
447 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
448 M_ASN1_INTEGER_free (prkey);
452 M_ASN1_INTEGER_free (prkey);
453 p8->pkeyalg->parameter->value.sequence = params;
454 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
460 p8->pkeyalg->parameter->value.sequence = params;
461 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
462 ndsa = sk_ASN1_TYPE_new_null();
463 ttmp = ASN1_TYPE_new();
464 if (!(ttmp->value.integer = BN_to_ASN1_INTEGER (pkey->pkey.dsa->pub_key, NULL))) {
465 EVPerr(EVP_F_EVP_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
466 PKCS8_PRIV_KEY_INFO_free(p8);
469 ttmp->type = V_ASN1_INTEGER;
470 sk_ASN1_TYPE_push(ndsa, ttmp);
472 ttmp = ASN1_TYPE_new();
473 ttmp->value.integer = prkey;
474 ttmp->type = V_ASN1_INTEGER;
475 sk_ASN1_TYPE_push(ndsa, ttmp);
477 p8->pkey->value.octet_string = ASN1_OCTET_STRING_new();
479 if (!ASN1_seq_pack_ASN1_TYPE(ndsa, i2d_ASN1_TYPE,
480 &p8->pkey->value.octet_string->data,
481 &p8->pkey->value.octet_string->length)) {
483 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
484 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
485 M_ASN1_INTEGER_free(prkey);
488 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
491 case PKCS8_EMBEDDED_PARAM:
493 p8->pkeyalg->parameter->type = V_ASN1_NULL;
494 ndsa = sk_ASN1_TYPE_new_null();
495 ttmp = ASN1_TYPE_new();
496 ttmp->value.sequence = params;
497 ttmp->type = V_ASN1_SEQUENCE;
498 sk_ASN1_TYPE_push(ndsa, ttmp);
500 ttmp = ASN1_TYPE_new();
501 ttmp->value.integer = prkey;
502 ttmp->type = V_ASN1_INTEGER;
503 sk_ASN1_TYPE_push(ndsa, ttmp);
505 p8->pkey->value.octet_string = ASN1_OCTET_STRING_new();
507 if (!ASN1_seq_pack_ASN1_TYPE(ndsa, i2d_ASN1_TYPE,
508 &p8->pkey->value.octet_string->data,
509 &p8->pkey->value.octet_string->length)) {
511 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
512 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
513 M_ASN1_INTEGER_free (prkey);
516 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
523 #ifndef OPENSSL_NO_EC
524 static int eckey_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8, EVP_PKEY *pkey)
527 ASN1_INTEGER *prkey = NULL;
528 unsigned char *p, *pp;
531 if (pkey->pkey.eckey == NULL || pkey->pkey.eckey->group == NULL)
533 EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, EVP_R_MISSING_PARAMETERS);
536 eckey = pkey->pkey.eckey;
538 /* set the ec parameters OID */
539 if (p8->pkeyalg->algorithm)
540 ASN1_OBJECT_free(p8->pkeyalg->algorithm);
542 p8->pkeyalg->algorithm = OBJ_nid2obj(NID_X9_62_id_ecPublicKey);
544 /* set the ec parameters */
546 if (p8->pkeyalg->parameter)
548 ASN1_TYPE_free(p8->pkeyalg->parameter);
549 p8->pkeyalg->parameter = NULL;
552 if ((p8->pkeyalg->parameter = ASN1_TYPE_new()) == NULL)
554 EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
558 if (EC_GROUP_get_asn1_flag(eckey->group)
559 && (nid = EC_GROUP_get_nid(eckey->group)))
561 /* we have a 'named curve' => just set the OID */
562 p8->pkeyalg->parameter->type = V_ASN1_OBJECT;
563 p8->pkeyalg->parameter->value.object = OBJ_nid2obj(nid);
565 else /* explicit parameters */
568 if ((i = i2d_ECParameters(eckey, NULL)) == 0)
570 EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, ERR_R_EC_LIB);
573 if ((p = (unsigned char *) OPENSSL_malloc(i)) == NULL)
575 EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
579 if (!i2d_ECParameters(eckey, &pp))
581 EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, ERR_R_EC_LIB);
585 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
586 if ((p8->pkeyalg->parameter->value.sequence
587 = ASN1_STRING_new()) == NULL)
589 EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, ERR_R_ASN1_LIB);
593 ASN1_STRING_set(p8->pkeyalg->parameter->value.sequence, p, i);
597 /* set the private key */
598 if ((prkey = BN_to_ASN1_INTEGER(pkey->pkey.eckey->priv_key, NULL))
601 EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, ERR_R_ASN1_LIB);
608 if (!ASN1_pack_string((char *)prkey, i2d_ASN1_INTEGER,
609 &p8->pkey->value.octet_string))
611 EVPerr(EVP_F_EC_KEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
612 M_ASN1_INTEGER_free(prkey);
616 ASN1_INTEGER_free(prkey);
619 case PKCS8_NO_OCTET: /* RSA specific */
620 case PKCS8_NS_DB: /* DSA specific */
621 case PKCS8_EMBEDDED_PARAM: /* DSA specific */
623 EVPerr(EVP_F_EVP_PKEY2PKCS8,EVP_R_ENCODE_ERROR);