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;
77 ASN1_INTEGER *privkey;
78 ASN1_TYPE *t1, *t2, *param = NULL;
88 if(p8->pkey->type == V_ASN1_OCTET_STRING) {
89 p8->broken = PKCS8_OK;
90 p = p8->pkey->value.octet_string->data;
91 pkeylen = p8->pkey->value.octet_string->length;
93 p8->broken = PKCS8_NO_OCTET;
94 p = p8->pkey->value.sequence->data;
95 pkeylen = p8->pkey->value.sequence->length;
97 if (!(pkey = EVP_PKEY_new())) {
98 EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
102 switch (OBJ_obj2nid(a->algorithm))
105 case NID_rsaEncryption:
106 if (!(rsa = d2i_RSAPrivateKey (NULL, &p, pkeylen))) {
107 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
110 EVP_PKEY_assign_RSA (pkey, rsa);
115 /* PKCS#8 DSA is weird: you just get a private key integer
116 * and parameters in the AlgorithmIdentifier the pubkey must
120 /* Check for broken DSA PKCS#8, UGH! */
121 if(*p == (V_ASN1_SEQUENCE|V_ASN1_CONSTRUCTED)) {
122 if(!(ndsa = ASN1_seq_unpack(p, pkeylen,
123 (char *(*)())d2i_ASN1_TYPE,
125 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
128 if(sk_num(ndsa) != 2 ) {
129 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
132 /* Handle Two broken types:
133 * SEQUENCE {parameters, priv_key}
134 * SEQUENCE {pub_key, priv_key}
137 t1 = (ASN1_TYPE *)sk_value(ndsa, 0);
138 t2 = (ASN1_TYPE *)sk_value(ndsa, 1);
139 if(t1->type == V_ASN1_SEQUENCE) {
140 p8->broken = PKCS8_EMBEDDED_PARAM;
142 } else if(a->parameter->type == V_ASN1_SEQUENCE) {
143 p8->broken = PKCS8_NS_DB;
144 param = a->parameter;
146 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
150 if(t2->type != V_ASN1_INTEGER) {
151 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
154 privkey = t2->value.integer;
155 } else if (!(privkey=d2i_ASN1_INTEGER (NULL, &p, pkeylen))) {
156 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
159 p = param->value.sequence->data;
160 plen = param->value.sequence->length;
161 if (!(dsa = d2i_DSAparams (NULL, &p, plen))) {
162 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);
165 /* We have parameters now set private key */
166 if (!(dsa->priv_key = ASN1_INTEGER_to_BN(privkey, NULL))) {
167 EVPerr(EVP_F_EVP_PKCS82PKEY,EVP_R_BN_DECODE_ERROR);
170 /* Calculate public key (ouch!) */
171 if (!(dsa->pub_key = BN_new())) {
172 EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
175 if (!(ctx = BN_CTX_new())) {
176 EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);
180 if (!BN_mod_exp(dsa->pub_key, dsa->g,
181 dsa->priv_key, dsa->p, ctx)) {
183 EVPerr(EVP_F_EVP_PKCS82PKEY,EVP_R_BN_PUBKEY_ERROR);
187 EVP_PKEY_assign_DSA(pkey, dsa);
189 sk_pop_free(ndsa, ASN1_TYPE_free);
193 sk_pop_free(ndsa, ASN1_TYPE_free);
200 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
201 if (!a->algorithm) strcpy (obj_tmp, "NULL");
202 else i2t_ASN1_OBJECT(obj_tmp, 80, a->algorithm);
203 ERR_add_error_data(2, "TYPE=", obj_tmp);
204 EVP_PKEY_free (pkey);
210 PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(EVP_PKEY *pkey)
212 return EVP_PKEY2PKCS8_broken(pkey, PKCS8_OK);
215 /* Turn a private key into a PKCS8 structure */
217 PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8_broken(EVP_PKEY *pkey, int broken)
219 PKCS8_PRIV_KEY_INFO *p8;
221 if (!(p8 = PKCS8_PRIV_KEY_INFO_new())) {
222 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
226 ASN1_INTEGER_set (p8->version, 0);
227 if (!(p8->pkeyalg->parameter = ASN1_TYPE_new ())) {
228 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
229 PKCS8_PRIV_KEY_INFO_free (p8);
232 p8->pkey->type = V_ASN1_OCTET_STRING;
233 switch (EVP_PKEY_type(pkey->type)) {
237 if(p8->broken == PKCS8_NO_OCTET) p8->pkey->type = V_ASN1_SEQUENCE;
239 p8->pkeyalg->algorithm = OBJ_nid2obj(NID_rsaEncryption);
240 p8->pkeyalg->parameter->type = V_ASN1_NULL;
241 if (!ASN1_pack_string ((char *)pkey, i2d_PrivateKey,
242 &p8->pkey->value.octet_string)) {
243 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
244 PKCS8_PRIV_KEY_INFO_free (p8);
251 if(!dsa_pkey2pkcs8(p8, pkey)) {
252 PKCS8_PRIV_KEY_INFO_free (p8);
259 EVPerr(EVP_F_EVP_PKEY2PKCS8, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
260 PKCS8_PRIV_KEY_INFO_free (p8);
263 RAND_add(p8->pkey->value.octet_string->data,
264 p8->pkey->value.octet_string->length, 0);
268 PKCS8_PRIV_KEY_INFO *PKCS8_set_broken(PKCS8_PRIV_KEY_INFO *p8, int broken)
273 p8->broken = PKCS8_OK;
278 p8->broken = PKCS8_NO_OCTET;
279 p8->pkey->type = V_ASN1_SEQUENCE;
284 EVPerr(EVP_F_EVP_PKCS8_SET_BROKEN,EVP_R_PKCS8_UNKNOWN_BROKEN_TYPE);
292 static int dsa_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8, EVP_PKEY *pkey)
298 unsigned char *p, *q;
300 p8->pkeyalg->algorithm = OBJ_nid2obj(NID_dsa);
301 len = i2d_DSAparams (pkey->pkey.dsa, NULL);
302 if (!(p = Malloc(len))) {
303 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
304 PKCS8_PRIV_KEY_INFO_free (p8);
308 i2d_DSAparams (pkey->pkey.dsa, &q);
309 params = ASN1_STRING_new();
310 ASN1_STRING_set(params, p, len);
312 /* Get private key into integer */
313 if (!(prkey = BN_to_ASN1_INTEGER (pkey->pkey.dsa->priv_key, NULL))) {
314 EVPerr(EVP_F_EVP_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
323 if (!ASN1_pack_string((char *)prkey, i2d_ASN1_INTEGER,
324 &p8->pkey->value.octet_string)) {
325 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
326 M_ASN1_INTEGER_free (prkey);
330 M_ASN1_INTEGER_free (prkey);
331 p8->pkeyalg->parameter->value.sequence = params;
332 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
338 p8->pkeyalg->parameter->value.sequence = params;
339 p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;
340 ndsa = sk_new_null();
341 ttmp = ASN1_TYPE_new();
342 if (!(ttmp->value.integer = BN_to_ASN1_INTEGER (pkey->pkey.dsa->pub_key, NULL))) {
343 EVPerr(EVP_F_EVP_PKEY2PKCS8,EVP_R_ENCODE_ERROR);
344 PKCS8_PRIV_KEY_INFO_free(p8);
347 ttmp->type = V_ASN1_INTEGER;
348 sk_push(ndsa, (char *)ttmp);
350 ttmp = ASN1_TYPE_new();
351 ttmp->value.integer = prkey;
352 ttmp->type = V_ASN1_INTEGER;
353 sk_push(ndsa, (char *)ttmp);
355 p8->pkey->value.octet_string = ASN1_OCTET_STRING_new();
357 if (!ASN1_seq_pack(ndsa, i2d_ASN1_TYPE,
358 &p8->pkey->value.octet_string->data,
359 &p8->pkey->value.octet_string->length)) {
361 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
362 sk_pop_free(ndsa, ASN1_TYPE_free);
363 M_ASN1_INTEGER_free(prkey);
366 sk_pop_free(ndsa, ASN1_TYPE_free);
369 case PKCS8_EMBEDDED_PARAM:
371 p8->pkeyalg->parameter->type = V_ASN1_NULL;
372 ndsa = sk_new_null();
373 ttmp = ASN1_TYPE_new();
374 ttmp->value.sequence = params;
375 ttmp->type = V_ASN1_SEQUENCE;
376 sk_push(ndsa, (char *)ttmp);
378 ttmp = ASN1_TYPE_new();
379 ttmp->value.integer = prkey;
380 ttmp->type = V_ASN1_INTEGER;
381 sk_push(ndsa, (char *)ttmp);
383 p8->pkey->value.octet_string = ASN1_OCTET_STRING_new();
385 if (!ASN1_seq_pack(ndsa, i2d_ASN1_TYPE,
386 &p8->pkey->value.octet_string->data,
387 &p8->pkey->value.octet_string->length)) {
389 EVPerr(EVP_F_EVP_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);
390 sk_pop_free(ndsa, ASN1_TYPE_free);
391 M_ASN1_INTEGER_free (prkey);
394 sk_pop_free(ndsa, ASN1_TYPE_free);