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 static int dsa_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8inf, EVP_PKEY *pkey);
67 /* Extract a private key from a PKCS8 structure */
69 EVP_PKEY *EVP_PKCS82PKEY (PKCS8_PRIV_KEY_INFO *p8)
71 EVP_PKEY *pkey = NULL;
72 #ifndef OPENSSL_NO_RSA
75 #ifndef OPENSSL_NO_DSA
77 ASN1_INTEGER *privkey;
78 ASN1_TYPE *t1, *t2, *param = NULL;
79 STACK_OF(ASN1_TYPE) *ndsa = NULL;
85 const unsigned char *cp;
89 if(p8->pkey->type == V_ASN1_OCTET_STRING) {
90 p8->broken = PKCS8_OK;
91 p = p8->pkey->value.octet_string->data;
92 pkeylen = p8->pkey->value.octet_string->length;
94 p8->broken = PKCS8_NO_OCTET;
95 p = p8->pkey->value.sequence->data;
96 pkeylen = p8->pkey->value.sequence->length;
98 if (!(pkey = EVP_PKEY_new())) {
99 EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
103 switch (OBJ_obj2nid(a->algorithm))
105 #ifndef OPENSSL_NO_RSA
106 case NID_rsaEncryption:
108 if (!(rsa = d2i_RSAPrivateKey (NULL,&cp, pkeylen))) {
109 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
112 EVP_PKEY_assign_RSA (pkey, rsa);
115 #ifndef OPENSSL_NO_DSA
117 /* PKCS#8 DSA is weird: you just get a private key integer
118 * and parameters in the AlgorithmIdentifier the pubkey must
122 /* Check for broken DSA PKCS#8, UGH! */
123 if(*p == (V_ASN1_SEQUENCE|V_ASN1_CONSTRUCTED)) {
124 if(!(ndsa = ASN1_seq_unpack_ASN1_TYPE(p, pkeylen,
127 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
130 if(sk_ASN1_TYPE_num(ndsa) != 2 ) {
131 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
134 /* Handle Two broken types:
135 * SEQUENCE {parameters, priv_key}
136 * SEQUENCE {pub_key, priv_key}
139 t1 = sk_ASN1_TYPE_value(ndsa, 0);
140 t2 = sk_ASN1_TYPE_value(ndsa, 1);
141 if(t1->type == V_ASN1_SEQUENCE) {
142 p8->broken = PKCS8_EMBEDDED_PARAM;
144 } else if(a->parameter->type == V_ASN1_SEQUENCE) {
145 p8->broken = PKCS8_NS_DB;
146 param = a->parameter;
148 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
152 if(t2->type != V_ASN1_INTEGER) {
153 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
156 privkey = t2->value.integer;
158 if (!(privkey=d2i_ASN1_INTEGER (NULL, &p, pkeylen))) {
159 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
162 param = p8->pkeyalg->parameter;
164 if (!param || (param->type != V_ASN1_SEQUENCE)) {
165 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
168 cp = p = param->value.sequence->data;
169 plen = param->value.sequence->length;
170 if (!(dsa = d2i_DSAparams (NULL, &cp, plen))) {
171 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
174 /* We have parameters now set private key */
175 if (!(dsa->priv_key = ASN1_INTEGER_to_BN(privkey, NULL))) {
176 EVPerr(EVP_F_EVP_PKCS82PKEY,EVP_R_BN_DECODE_ERROR);
179 /* Calculate public key (ouch!) */
180 if (!(dsa->pub_key = BN_new())) {
181 EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
184 if (!(ctx = BN_CTX_new())) {
185 EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
189 if (!BN_mod_exp(dsa->pub_key, dsa->g,
190 dsa->priv_key, dsa->p, ctx)) {
192 EVPerr(EVP_F_EVP_PKCS82PKEY,EVP_R_BN_PUBKEY_ERROR);
196 EVP_PKEY_assign_DSA(pkey, dsa);
198 if(ndsa) sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
199 else ASN1_INTEGER_free(privkey);
203 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
210 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
211 if (!a->algorithm) strcpy (obj_tmp, "NULL");
212 else i2t_ASN1_OBJECT(obj_tmp, 80, a->algorithm);
213 ERR_add_error_data(2, "TYPE=", obj_tmp);
214 EVP_PKEY_free (pkey);
220 PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(EVP_PKEY *pkey)
222 return EVP_PKEY2PKCS8_broken(pkey, PKCS8_OK);
225 /* Turn a private key into a PKCS8 structure */
227 PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8_broken(EVP_PKEY *pkey, int broken)
229 PKCS8_PRIV_KEY_INFO *p8;
231 if (!(p8 = PKCS8_PRIV_KEY_INFO_new())) {
232 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
236 ASN1_INTEGER_set (p8->version, 0);
237 if (!(p8->pkeyalg->parameter = ASN1_TYPE_new ())) {
238 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
239 PKCS8_PRIV_KEY_INFO_free (p8);
242 p8->pkey->type = V_ASN1_OCTET_STRING;
243 switch (EVP_PKEY_type(pkey->type)) {
244 #ifndef OPENSSL_NO_RSA
247 if(p8->broken == PKCS8_NO_OCTET) p8->pkey->type = V_ASN1_SEQUENCE;
249 p8->pkeyalg->algorithm = OBJ_nid2obj(NID_rsaEncryption);
250 p8->pkeyalg->parameter->type = V_ASN1_NULL;
251 if (!ASN1_pack_string ((char *)pkey, i2d_PrivateKey,
252 &p8->pkey->value.octet_string)) {
253 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
254 PKCS8_PRIV_KEY_INFO_free (p8);
259 #ifndef OPENSSL_NO_DSA
261 if(!dsa_pkey2pkcs8(p8, pkey)) {
262 PKCS8_PRIV_KEY_INFO_free (p8);
269 EVPerr(EVP_F_EVP_PKEY2PKCS8, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
270 PKCS8_PRIV_KEY_INFO_free (p8);
273 RAND_add(p8->pkey->value.octet_string->data,
274 p8->pkey->value.octet_string->length, 0);
278 PKCS8_PRIV_KEY_INFO *PKCS8_set_broken(PKCS8_PRIV_KEY_INFO *p8, int broken)
283 p8->broken = PKCS8_OK;
288 p8->broken = PKCS8_NO_OCTET;
289 p8->pkey->type = V_ASN1_SEQUENCE;
294 EVPerr(EVP_F_EVP_PKCS8_SET_BROKEN,EVP_R_PKCS8_UNKNOWN_BROKEN_TYPE);
301 #ifndef OPENSSL_NO_DSA
302 static int dsa_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8, EVP_PKEY *pkey)
307 STACK_OF(ASN1_TYPE) *ndsa;
308 unsigned char *p, *q;
311 p8->pkeyalg->algorithm = OBJ_nid2obj(NID_dsa);
312 len = i2d_DSAparams (pkey->pkey.dsa, NULL);
313 if (!(p = OPENSSL_malloc(len))) {
314 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
315 PKCS8_PRIV_KEY_INFO_free (p8);
319 i2d_DSAparams (pkey->pkey.dsa, &q);
320 params = ASN1_STRING_new();
321 ASN1_STRING_set(params, p, len);
323 /* Get private key into integer */
324 if (!(prkey = BN_to_ASN1_INTEGER (pkey->pkey.dsa->priv_key, NULL))) {
325 EVPerr(EVP_F_EVP_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
334 if (!ASN1_pack_string((char *)prkey, i2d_ASN1_INTEGER,
335 &p8->pkey->value.octet_string)) {
336 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
337 M_ASN1_INTEGER_free (prkey);
341 M_ASN1_INTEGER_free (prkey);
342 p8->pkeyalg->parameter->value.sequence = params;
343 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
349 p8->pkeyalg->parameter->value.sequence = params;
350 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
351 ndsa = sk_ASN1_TYPE_new_null();
352 ttmp = ASN1_TYPE_new();
353 if (!(ttmp->value.integer = BN_to_ASN1_INTEGER (pkey->pkey.dsa->pub_key, NULL))) {
354 EVPerr(EVP_F_EVP_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
355 PKCS8_PRIV_KEY_INFO_free(p8);
358 ttmp->type = V_ASN1_INTEGER;
359 sk_ASN1_TYPE_push(ndsa, ttmp);
361 ttmp = ASN1_TYPE_new();
362 ttmp->value.integer = prkey;
363 ttmp->type = V_ASN1_INTEGER;
364 sk_ASN1_TYPE_push(ndsa, ttmp);
366 p8->pkey->value.octet_string = ASN1_OCTET_STRING_new();
368 if (!ASN1_seq_pack_ASN1_TYPE(ndsa, i2d_ASN1_TYPE,
369 &p8->pkey->value.octet_string->data,
370 &p8->pkey->value.octet_string->length)) {
372 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
373 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
374 M_ASN1_INTEGER_free(prkey);
377 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
380 case PKCS8_EMBEDDED_PARAM:
382 p8->pkeyalg->parameter->type = V_ASN1_NULL;
383 ndsa = sk_ASN1_TYPE_new_null();
384 ttmp = ASN1_TYPE_new();
385 ttmp->value.sequence = params;
386 ttmp->type = V_ASN1_SEQUENCE;
387 sk_ASN1_TYPE_push(ndsa, ttmp);
389 ttmp = ASN1_TYPE_new();
390 ttmp->value.integer = prkey;
391 ttmp->type = V_ASN1_INTEGER;
392 sk_ASN1_TYPE_push(ndsa, ttmp);
394 p8->pkey->value.octet_string = ASN1_OCTET_STRING_new();
396 if (!ASN1_seq_pack_ASN1_TYPE(ndsa, i2d_ASN1_TYPE,
397 &p8->pkey->value.octet_string->data,
398 &p8->pkey->value.octet_string->length)) {
400 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
401 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
402 M_ASN1_INTEGER_free (prkey);
405 sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);