2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 1999 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 /* Extract a private key from a PKCS8 structure */
71 EVP_PKEY *EVP_PKCS82PKEY (PKCS8_PRIV_KEY_INFO *p8)
73 EVP_PKEY *pkey = NULL;
74 #ifndef OPENSSL_NO_RSA
77 #ifndef OPENSSL_NO_DSA
79 ASN1_INTEGER *privkey;
80 ASN1_TYPE *t1, *t2, *param = NULL;
81 STACK_OF(ASN1_TYPE) *ndsa = NULL;
87 const unsigned char *cp;
91 if(p8->pkey->type == V_ASN1_OCTET_STRING) {
92 p8->broken = PKCS8_OK;
93 p = p8->pkey->value.octet_string->data;
94 pkeylen = p8->pkey->value.octet_string->length;
96 p8->broken = PKCS8_NO_OCTET;
97 p = p8->pkey->value.sequence->data;
98 pkeylen = p8->pkey->value.sequence->length;
100 if (!(pkey = EVP_PKEY_new())) {
101 EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
105 switch (OBJ_obj2nid(a->algorithm))
107 #ifndef OPENSSL_NO_RSA
108 case NID_rsaEncryption:
110 if (!(rsa = d2i_RSAPrivateKey (NULL,&cp, pkeylen))) {
111 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
114 EVP_PKEY_assign_RSA (pkey, rsa);
117 #ifndef OPENSSL_NO_DSA
119 /* PKCS#8 DSA is weird: you just get a private key integer
120 * and parameters in the AlgorithmIdentifier the pubkey must
124 /* Check for broken DSA PKCS#8, UGH! */
125 if(*p == (V_ASN1_SEQUENCE|V_ASN1_CONSTRUCTED)) {
126 if(!(ndsa = ASN1_seq_unpack_ASN1_TYPE(p, pkeylen,
129 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
132 if(sk_ASN1_TYPE_num(ndsa) != 2 ) {
133 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
136 /* Handle Two broken types:
137 * SEQUENCE {parameters, priv_key}
138 * SEQUENCE {pub_key, priv_key}
141 t1 = sk_ASN1_TYPE_value(ndsa, 0);
142 t2 = sk_ASN1_TYPE_value(ndsa, 1);
143 if(t1->type == V_ASN1_SEQUENCE) {
144 p8->broken = PKCS8_EMBEDDED_PARAM;
146 } else if(a->parameter->type == V_ASN1_SEQUENCE) {
147 p8->broken = PKCS8_NS_DB;
148 param = a->parameter;
150 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
154 if(t2->type != V_ASN1_INTEGER) {
155 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
158 privkey = t2->value.integer;
160 if (!(privkey=d2i_ASN1_INTEGER (NULL, &p, pkeylen))) {
161 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
164 param = p8->pkeyalg->parameter;
166 if (!param || (param->type != V_ASN1_SEQUENCE)) {
167 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
170 cp = p = param->value.sequence->data;
171 plen = param->value.sequence->length;
172 if (!(dsa = d2i_DSAparams (NULL, &cp, plen))) {
173 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
176 /* We have parameters now set private key */
177 if (!(dsa->priv_key = ASN1_INTEGER_to_BN(privkey, NULL))) {
178 EVPerr(EVP_F_EVP_PKCS82PKEY,EVP_R_BN_DECODE_ERROR);
181 /* Calculate public key (ouch!) */
182 if (!(dsa->pub_key = BN_new())) {
183 EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
186 if (!(ctx = BN_CTX_new())) {
187 EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
191 if (!BN_mod_exp(dsa->pub_key, dsa->g,
192 dsa->priv_key, dsa->p, ctx)) {
194 EVPerr(EVP_F_EVP_PKCS82PKEY,EVP_R_BN_PUBKEY_ERROR);
198 EVP_PKEY_assign_DSA(pkey, dsa);
200 if(ndsa) sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
201 else ASN1_INTEGER_free(privkey);
205 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
212 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
213 if (!a->algorithm) BUF_strlcpy (obj_tmp, "NULL", sizeof obj_tmp);
214 else i2t_ASN1_OBJECT(obj_tmp, 80, a->algorithm);
215 ERR_add_error_data(2, "TYPE=", obj_tmp);
216 EVP_PKEY_free (pkey);
222 PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(EVP_PKEY *pkey)
224 return EVP_PKEY2PKCS8_broken(pkey, PKCS8_OK);
227 /* Turn a private key into a PKCS8 structure */
229 PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8_broken(EVP_PKEY *pkey, int broken)
231 PKCS8_PRIV_KEY_INFO *p8;
233 if (!(p8 = PKCS8_PRIV_KEY_INFO_new())) {
234 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
238 ASN1_INTEGER_set (p8->version, 0);
239 if (!(p8->pkeyalg->parameter = ASN1_TYPE_new ())) {
240 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
241 PKCS8_PRIV_KEY_INFO_free (p8);
244 p8->pkey->type = V_ASN1_OCTET_STRING;
245 switch (EVP_PKEY_type(pkey->type)) {
246 #ifndef OPENSSL_NO_RSA
249 if(p8->broken == PKCS8_NO_OCTET) p8->pkey->type = V_ASN1_SEQUENCE;
251 p8->pkeyalg->algorithm = OBJ_nid2obj(NID_rsaEncryption);
252 p8->pkeyalg->parameter->type = V_ASN1_NULL;
253 if (!ASN1_pack_string ((char *)pkey, i2d_PrivateKey,
254 &p8->pkey->value.octet_string)) {
255 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
256 PKCS8_PRIV_KEY_INFO_free (p8);
261 #ifndef OPENSSL_NO_DSA
263 if(!dsa_pkey2pkcs8(p8, pkey)) {
264 PKCS8_PRIV_KEY_INFO_free (p8);
271 EVPerr(EVP_F_EVP_PKEY2PKCS8, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
272 PKCS8_PRIV_KEY_INFO_free (p8);
275 RAND_add(p8->pkey->value.octet_string->data,
276 p8->pkey->value.octet_string->length, 0);
280 PKCS8_PRIV_KEY_INFO *PKCS8_set_broken(PKCS8_PRIV_KEY_INFO *p8, int broken)
285 p8->broken = PKCS8_OK;
290 p8->broken = PKCS8_NO_OCTET;
291 p8->pkey->type = V_ASN1_SEQUENCE;
296 EVPerr(EVP_F_EVP_PKCS8_SET_BROKEN,EVP_R_PKCS8_UNKNOWN_BROKEN_TYPE);
303 #ifndef OPENSSL_NO_DSA
304 static int dsa_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8, EVP_PKEY *pkey)
309 STACK_OF(ASN1_TYPE) *ndsa;
310 unsigned char *p, *q;
313 p8->pkeyalg->algorithm = OBJ_nid2obj(NID_dsa);
314 len = i2d_DSAparams (pkey->pkey.dsa, NULL);
315 if (!(p = OPENSSL_malloc(len))) {
316 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
317 PKCS8_PRIV_KEY_INFO_free (p8);
321 i2d_DSAparams (pkey->pkey.dsa, &q);
322 params = ASN1_STRING_new();
323 ASN1_STRING_set(params, p, len);
325 /* Get private key into integer */
326 if (!(prkey = BN_to_ASN1_INTEGER (pkey->pkey.dsa->priv_key, NULL))) {
327 EVPerr(EVP_F_EVP_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
336 if (!ASN1_pack_string((char *)prkey, i2d_ASN1_INTEGER,
337 &p8->pkey->value.octet_string)) {
338 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
339 M_ASN1_INTEGER_free (prkey);
343 M_ASN1_INTEGER_free (prkey);
344 p8->pkeyalg->parameter->value.sequence = params;
345 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
351 p8->pkeyalg->parameter->value.sequence = params;
352 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
353 ndsa = sk_ASN1_TYPE_new_null();
354 ttmp = ASN1_TYPE_new();
355 if (!(ttmp->value.integer = BN_to_ASN1_INTEGER (pkey->pkey.dsa->pub_key, NULL))) {
356 EVPerr(EVP_F_EVP_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
357 PKCS8_PRIV_KEY_INFO_free(p8);
360 ttmp->type = V_ASN1_INTEGER;
361 sk_ASN1_TYPE_push(ndsa, ttmp);
363 ttmp = ASN1_TYPE_new();
364 ttmp->value.integer = prkey;
365 ttmp->type = V_ASN1_INTEGER;
366 sk_ASN1_TYPE_push(ndsa, ttmp);
368 p8->pkey->value.octet_string = ASN1_OCTET_STRING_new();
370 if (!ASN1_seq_pack_ASN1_TYPE(ndsa, i2d_ASN1_TYPE,
371 &p8->pkey->value.octet_string->data,
372 &p8->pkey->value.octet_string->length)) {
374 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
375 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
376 M_ASN1_INTEGER_free(prkey);
379 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
382 case PKCS8_EMBEDDED_PARAM:
384 p8->pkeyalg->parameter->type = V_ASN1_NULL;
385 ndsa = sk_ASN1_TYPE_new_null();
386 ttmp = ASN1_TYPE_new();
387 ttmp->value.sequence = params;
388 ttmp->type = V_ASN1_SEQUENCE;
389 sk_ASN1_TYPE_push(ndsa, ttmp);
391 ttmp = ASN1_TYPE_new();
392 ttmp->value.integer = prkey;
393 ttmp->type = V_ASN1_INTEGER;
394 sk_ASN1_TYPE_push(ndsa, ttmp);
396 p8->pkey->value.octet_string = ASN1_OCTET_STRING_new();
398 if (!ASN1_seq_pack_ASN1_TYPE(ndsa, i2d_ASN1_TYPE,
399 &p8->pkey->value.octet_string->data,
400 &p8->pkey->value.octet_string->length)) {
402 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
403 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
404 M_ASN1_INTEGER_free (prkey);
407 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);