1 /* evp_pkey.c */

     2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL

     3  * project 1999.

     4  */

     5 /* ====================================================================

     6  * Copyright (c) 1999-2002 The OpenSSL Project.  All rights reserved.

     7  *

     8  * Redistribution and use in source and binary forms, with or without

     9  * modification, are permitted provided that the following conditions

    10  * are met:

    11  *

    12  * 1. Redistributions of source code must retain the above copyright

    13  *    notice, this list of conditions and the following disclaimer. 

    14  *

    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

    18  *    distribution.

    19  *

    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/)"

    24  *

    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.

    29  *

    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.

    33  *

    34  * 6. Redistributions of any form whatsoever must retain the following

    35  *    acknowledgment:

    36  *    "This product includes software developed by the OpenSSL Project

    37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"

    38  *

    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  * ====================================================================

    52  *

    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).

    56  *

    57  */

    58 

    59 #include <stdio.h>

    60 #include <stdlib.h>

    61 #include "cryptlib.h"

    62 #include <openssl/x509.h>

    63 #include <openssl/rand.h>

    64 #ifndef OPENSSL_NO_RSA

    65 #include <openssl/rsa.h>

    66 #endif

    67 #ifndef OPENSSL_NO_DSA

    68 #include <openssl/dsa.h>

    69 #endif

    70 #include <openssl/bn.h>

    71 

    72 #ifndef OPENSSL_NO_DSA

    73 static int dsa_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8inf, EVP_PKEY *pkey);

    74 #endif

    75 #ifndef OPENSSL_NO_EC

    76 static int eckey_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8inf, EVP_PKEY *pkey);

    77 #endif

    78 

    79 /* Extract a private key from a PKCS8 structure */

    80 

    81 EXPORT_C EVP_PKEY *EVP_PKCS82PKEY(PKCS8_PRIV_KEY_INFO *p8)

    82 {

    83 	EVP_PKEY *pkey = NULL;

    84 #ifndef OPENSSL_NO_RSA

    85 	RSA *rsa = NULL;

    86 #endif

    87 #ifndef OPENSSL_NO_DSA

    88 	DSA *dsa = NULL;

    89 	ASN1_TYPE *t1, *t2;

    90 	ASN1_INTEGER *privkey;

    91 	STACK_OF(ASN1_TYPE) *ndsa = NULL;

    92 #endif

    93 #ifndef OPENSSL_NO_EC

    94 	EC_KEY *eckey = NULL;

    95 	const unsigned char *p_tmp;

    96 #endif

    97 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_EC)

    98 	ASN1_TYPE    *param = NULL;	

    99 	BN_CTX *ctx = NULL;

   100 	int plen;

   101 #endif

   102 	X509_ALGOR *a;

   103 	const unsigned char *p;

   104 	const unsigned char *cp;

   105 	int pkeylen;

   106 	int  nid;

   107 	char obj_tmp[80];

   108 

   109 	if(p8->pkey->type == V_ASN1_OCTET_STRING) {

   110 		p8->broken = PKCS8_OK;

   111 		p = p8->pkey->value.octet_string->data;

   112 		pkeylen = p8->pkey->value.octet_string->length;

   113 	} else {

   114 		p8->broken = PKCS8_NO_OCTET;

   115 		p = p8->pkey->value.sequence->data;

   116 		pkeylen = p8->pkey->value.sequence->length;

   117 	}

   118 	if (!(pkey = EVP_PKEY_new())) {

   119 		EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);

   120 		return NULL;

   121 	}

   122 	a = p8->pkeyalg;

   123 	nid = OBJ_obj2nid(a->algorithm);

   124 	switch(nid)

   125 	{

   126 #ifndef OPENSSL_NO_RSA

   127 		case NID_rsaEncryption:

   128 		cp = p;

   129 		if (!(rsa = d2i_RSAPrivateKey (NULL,&cp, pkeylen))) {

   130 			EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);

   131 			return NULL;

   132 		}

   133 		EVP_PKEY_assign_RSA (pkey, rsa);

   134 		break;

   135 #endif

   136 #ifndef OPENSSL_NO_DSA

   137 		case NID_dsa:

   138 		/* PKCS#8 DSA is weird: you just get a private key integer

   139 	         * and parameters in the AlgorithmIdentifier the pubkey must

   140 		 * be recalculated.

   141 		 */

   142 	

   143 		/* Check for broken DSA PKCS#8, UGH! */

   144 		if(*p == (V_ASN1_SEQUENCE|V_ASN1_CONSTRUCTED)) {

   145 		    if(!(ndsa = ASN1_seq_unpack_ASN1_TYPE(p, pkeylen, 

   146 							  d2i_ASN1_TYPE,

   147 							  ASN1_TYPE_free))) {

   148 			EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);

   149 			goto dsaerr;

   150 		    }

   151 		    if(sk_ASN1_TYPE_num(ndsa) != 2 ) {

   152 			EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);

   153 			goto dsaerr;

   154 		    }

   155 		    /* Handle Two broken types:

   156 		     * SEQUENCE {parameters, priv_key}

   157 		     * SEQUENCE {pub_key, priv_key}

   158 		     */

   159 

   160 		    t1 = sk_ASN1_TYPE_value(ndsa, 0);

   161 		    t2 = sk_ASN1_TYPE_value(ndsa, 1);

   162 		    if(t1->type == V_ASN1_SEQUENCE) {

   163 			p8->broken = PKCS8_EMBEDDED_PARAM;

   164 			param = t1;

   165 		    } else if(a->parameter->type == V_ASN1_SEQUENCE) {

   166 			p8->broken = PKCS8_NS_DB;

   167 			param = a->parameter;

   168 		    } else {

   169 			EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);

   170 			goto dsaerr;

   171 		    }

   172 

   173 		    if(t2->type != V_ASN1_INTEGER) {

   174 			EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);

   175 			goto dsaerr;

   176 		    }

   177 		    privkey = t2->value.integer;

   178 		} else {

   179 			if (!(privkey=d2i_ASN1_INTEGER (NULL, &p, pkeylen))) {

   180 				EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);

   181 				goto dsaerr;

   182 			}

   183 			param = p8->pkeyalg->parameter;

   184 		}

   185 		if (!param || (param->type != V_ASN1_SEQUENCE)) {

   186 			EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);

   187 			goto dsaerr;

   188 		}

   189 		cp = p = param->value.sequence->data;

   190 		plen = param->value.sequence->length;

   191 		if (!(dsa = d2i_DSAparams (NULL, &cp, plen))) {

   192 			EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);

   193 			goto dsaerr;

   194 		}

   195 		/* We have parameters now set private key */

   196 		if (!(dsa->priv_key = ASN1_INTEGER_to_BN(privkey, NULL))) {

   197 			EVPerr(EVP_F_EVP_PKCS82PKEY,EVP_R_BN_DECODE_ERROR);

   198 			goto dsaerr;

   199 		}

   200 		/* Calculate public key (ouch!) */

   201 		if (!(dsa->pub_key = BN_new())) {

   202 			EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);

   203 			goto dsaerr;

   204 		}

   205 		if (!(ctx = BN_CTX_new())) {

   206 			EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE);

   207 			goto dsaerr;

   208 		}

   209 			

   210 		if (!BN_mod_exp(dsa->pub_key, dsa->g,

   211 						 dsa->priv_key, dsa->p, ctx)) {

   212 			

   213 			EVPerr(EVP_F_EVP_PKCS82PKEY,EVP_R_BN_PUBKEY_ERROR);

   214 			goto dsaerr;

   215 		}

   216 

   217 		EVP_PKEY_assign_DSA(pkey, dsa);

   218 		BN_CTX_free (ctx);

   219 		if(ndsa) sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);

   220 		else ASN1_INTEGER_free(privkey);

   221 		break;

   222 		dsaerr:

   223 		BN_CTX_free (ctx);

   224 		sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);

   225 		DSA_free(dsa);

   226 		EVP_PKEY_free(pkey);

   227 		return NULL;

   228 		break;

   229 #endif

   230 #ifndef OPENSSL_NO_EC

   231 		case NID_X9_62_id_ecPublicKey:

   232 		p_tmp = p;

   233 		/* extract the ec parameters */

   234 		param = p8->pkeyalg->parameter;

   235 

   236 		if (!param || ((param->type != V_ASN1_SEQUENCE) &&

   237 		    (param->type != V_ASN1_OBJECT)))

   238 		{

   239 			EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);

   240 			goto ecerr;

   241 		}

   242 

   243 		if (param->type == V_ASN1_SEQUENCE)

   244 		{

   245 			cp = p = param->value.sequence->data;

   246 			plen = param->value.sequence->length;

   247 

   248 			if (!(eckey = d2i_ECParameters(NULL, &cp, plen)))

   249 			{

   250 				EVPerr(EVP_F_EVP_PKCS82PKEY,

   251 					EVP_R_DECODE_ERROR);

   252 				goto ecerr;

   253 			}

   254 		}

   255 		else

   256 		{

   257 			EC_GROUP *group;

   258 			cp = p = param->value.object->data;

   259 			plen = param->value.object->length;

   260 

   261 			/* type == V_ASN1_OBJECT => the parameters are given

   262 			 * by an asn1 OID

   263 			 */

   264 			if ((eckey = EC_KEY_new()) == NULL)

   265 			{

   266 				EVPerr(EVP_F_EVP_PKCS82PKEY,

   267 					ERR_R_MALLOC_FAILURE);

   268 				goto ecerr;

   269 			}

   270 			group = EC_GROUP_new_by_curve_name(OBJ_obj2nid(a->parameter->value.object));

   271 			if (group == NULL)

   272 				goto ecerr;

   273 			EC_GROUP_set_asn1_flag(group, OPENSSL_EC_NAMED_CURVE);

   274 			if (EC_KEY_set_group(eckey, group) == 0)

   275 				goto ecerr;

   276 			EC_GROUP_free(group);

   277 		}

   278 

   279 		/* We have parameters now set private key */

   280 		if (!d2i_ECPrivateKey(&eckey, &p_tmp, pkeylen))

   281 		{

   282 			EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_DECODE_ERROR);

   283 			goto ecerr;

   284 		}

   285 

   286 		/* calculate public key (if necessary) */

   287 		if (EC_KEY_get0_public_key(eckey) == NULL)

   288 		{

   289 			const BIGNUM *priv_key;

   290 			const EC_GROUP *group;

   291 			EC_POINT *pub_key;

   292 			/* the public key was not included in the SEC1 private

   293 			 * key => calculate the public key */

   294 			group   = EC_KEY_get0_group(eckey);

   295 			pub_key = EC_POINT_new(group);

   296 			if (pub_key == NULL)

   297 			{

   298 				EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_EC_LIB);

   299 				goto ecerr;

   300 			}

   301 			if (!EC_POINT_copy(pub_key, EC_GROUP_get0_generator(group)))

   302 			{

   303 				EC_POINT_free(pub_key);

   304 				EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_EC_LIB);

   305 				goto ecerr;

   306 			}

   307 			priv_key = EC_KEY_get0_private_key(eckey);

   308 			if (!EC_POINT_mul(group, pub_key, priv_key, NULL, NULL, ctx))

   309 			{

   310 				EC_POINT_free(pub_key);

   311 				EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_EC_LIB);

   312 				goto ecerr;

   313 			}

   314 			if (EC_KEY_set_public_key(eckey, pub_key) == 0)

   315 			{

   316 				EC_POINT_free(pub_key);

   317 				EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_EC_LIB);

   318 				goto ecerr;

   319 			}

   320 			EC_POINT_free(pub_key);

   321 		}

   322 

   323 		EVP_PKEY_assign_EC_KEY(pkey, eckey);

   324 		if (ctx)

   325 			BN_CTX_free(ctx);

   326 		break;

   327 ecerr:

   328 		if (ctx)

   329 			BN_CTX_free(ctx);

   330 		if (eckey)

   331 			EC_KEY_free(eckey);

   332 		if (pkey)

   333 			EVP_PKEY_free(pkey);

   334 		return NULL;

   335 #endif

   336 		default:

   337 		EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);

   338 		if (!a->algorithm) BUF_strlcpy (obj_tmp, "NULL", sizeof obj_tmp);

   339 		else i2t_ASN1_OBJECT(obj_tmp, 80, a->algorithm);

   340 		ERR_add_error_data(2, "TYPE=", obj_tmp);

   341 		EVP_PKEY_free (pkey);

   342 		return NULL;

   343 	}

   344 	return pkey;

   345 }

   346 

   347 EXPORT_C PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(EVP_PKEY *pkey)

   348 {

   349 	return EVP_PKEY2PKCS8_broken(pkey, PKCS8_OK);

   350 }

   351 

   352 /* Turn a private key into a PKCS8 structure */

   353 

   354 EXPORT_C PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8_broken(EVP_PKEY *pkey, int broken)

   355 {

   356 	PKCS8_PRIV_KEY_INFO *p8;

   357 

   358 	if (!(p8 = PKCS8_PRIV_KEY_INFO_new())) {	

   359 		EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,ERR_R_MALLOC_FAILURE);

   360 		return NULL;

   361 	}

   362 	p8->broken = broken;

   363 	if (!ASN1_INTEGER_set(p8->version, 0)) {

   364 		EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,ERR_R_MALLOC_FAILURE);

   365 		PKCS8_PRIV_KEY_INFO_free (p8);

   366 		return NULL;

   367 	}

   368 	if (!(p8->pkeyalg->parameter = ASN1_TYPE_new ())) {

   369 		EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,ERR_R_MALLOC_FAILURE);

   370 		PKCS8_PRIV_KEY_INFO_free (p8);

   371 		return NULL;

   372 	}

   373 	p8->pkey->type = V_ASN1_OCTET_STRING;

   374 	switch (EVP_PKEY_type(pkey->type)) {

   375 #ifndef OPENSSL_NO_RSA

   376 		case EVP_PKEY_RSA:

   377 

   378 		if(p8->broken == PKCS8_NO_OCTET) p8->pkey->type = V_ASN1_SEQUENCE;

   379 

   380 		p8->pkeyalg->algorithm = OBJ_nid2obj(NID_rsaEncryption);

   381 		p8->pkeyalg->parameter->type = V_ASN1_NULL;

   382 		if (!ASN1_pack_string_of (EVP_PKEY,pkey, i2d_PrivateKey,

   383 					 &p8->pkey->value.octet_string)) {

   384 			EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,ERR_R_MALLOC_FAILURE);

   385 			PKCS8_PRIV_KEY_INFO_free (p8);

   386 			return NULL;

   387 		}

   388 		break;

   389 #endif

   390 #ifndef OPENSSL_NO_DSA

   391 		case EVP_PKEY_DSA:

   392 		if(!dsa_pkey2pkcs8(p8, pkey)) {

   393 			PKCS8_PRIV_KEY_INFO_free (p8);

   394 			return NULL;

   395 		}

   396 

   397 		break;

   398 #endif

   399 #ifndef OPENSSL_NO_EC

   400 		case EVP_PKEY_EC:

   401 		if (!eckey_pkey2pkcs8(p8, pkey))

   402 		{

   403 			PKCS8_PRIV_KEY_INFO_free(p8);

   404 			return(NULL);

   405 		}

   406 		break;

   407 #endif

   408 		default:

   409 		EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);

   410 		PKCS8_PRIV_KEY_INFO_free (p8);

   411 		return NULL;

   412 	}

   413 	RAND_add(p8->pkey->value.octet_string->data,

   414 		 p8->pkey->value.octet_string->length, 0.0);

   415 	return p8;

   416 }

   417 

   418 EXPORT_C PKCS8_PRIV_KEY_INFO *PKCS8_set_broken(PKCS8_PRIV_KEY_INFO *p8, int broken)

   419 {

   420 	switch (broken) {

   421 

   422 		case PKCS8_OK:

   423 		p8->broken = PKCS8_OK;

   424 		return p8;

   425 		break;

   426 

   427 		case PKCS8_NO_OCTET:

   428 		p8->broken = PKCS8_NO_OCTET;

   429 		p8->pkey->type = V_ASN1_SEQUENCE;

   430 		return p8;

   431 		break;

   432 

   433 		default:

   434 		EVPerr(EVP_F_PKCS8_SET_BROKEN,EVP_R_PKCS8_UNKNOWN_BROKEN_TYPE);

   435 		return NULL;

   436 	}

   437 }

   438 

   439 #ifndef OPENSSL_NO_DSA

   440 static int dsa_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8, EVP_PKEY *pkey)

   441 {

   442 	ASN1_STRING *params = NULL;

   443 	ASN1_INTEGER *prkey = NULL;

   444 	ASN1_TYPE *ttmp = NULL;

   445 	STACK_OF(ASN1_TYPE) *ndsa = NULL;

   446 	unsigned char *p = NULL, *q;

   447 	int len;

   448 

   449 	p8->pkeyalg->algorithm = OBJ_nid2obj(NID_dsa);

   450 	len = i2d_DSAparams (pkey->pkey.dsa, NULL);

   451 	if (!(p = OPENSSL_malloc(len))) {

   452 		EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);

   453 		goto err;

   454 	}

   455 	q = p;

   456 	i2d_DSAparams (pkey->pkey.dsa, &q);

   457 	if (!(params = ASN1_STRING_new())) {

   458 		EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);

   459 		goto err;

   460 	}

   461 	if (!ASN1_STRING_set(params, p, len)) {

   462 		EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);

   463 		goto err;

   464 	}

   465 	OPENSSL_free(p);

   466 	p = NULL;

   467 	/* Get private key into integer */

   468 	if (!(prkey = BN_to_ASN1_INTEGER (pkey->pkey.dsa->priv_key, NULL))) {

   469 		EVPerr(EVP_F_DSA_PKEY2PKCS8,EVP_R_ENCODE_ERROR);

   470 		goto err;

   471 	}

   472 

   473 	switch(p8->broken) {

   474 

   475 		case PKCS8_OK:

   476 		case PKCS8_NO_OCTET:

   477 

   478 		if (!ASN1_pack_string_of(ASN1_INTEGER,prkey, i2d_ASN1_INTEGER,

   479 					 &p8->pkey->value.octet_string)) {

   480 			EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);

   481 			goto err;

   482 		}

   483 

   484 		M_ASN1_INTEGER_free (prkey);

   485 		prkey = NULL;

   486 		p8->pkeyalg->parameter->value.sequence = params;

   487 		params = NULL;

   488 		p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;

   489 

   490 		break;

   491 

   492 		case PKCS8_NS_DB:

   493 

   494 		p8->pkeyalg->parameter->value.sequence = params;

   495 		params = NULL;

   496 		p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;

   497 		if (!(ndsa = sk_ASN1_TYPE_new_null())) {

   498 			EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);

   499 			goto err;

   500 		}

   501 		if (!(ttmp = ASN1_TYPE_new())) {

   502 			EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);

   503 			goto err;

   504 		}

   505 		if (!(ttmp->value.integer =

   506 			BN_to_ASN1_INTEGER(pkey->pkey.dsa->pub_key, NULL))) {

   507 			EVPerr(EVP_F_DSA_PKEY2PKCS8,EVP_R_ENCODE_ERROR);

   508 			goto err;

   509 		}

   510 		ttmp->type = V_ASN1_INTEGER;

   511 		if (!sk_ASN1_TYPE_push(ndsa, ttmp)) {

   512 			EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);

   513 			goto err;

   514 		}

   515 

   516 		if (!(ttmp = ASN1_TYPE_new())) {

   517 			EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);

   518 			goto err;

   519 		}

   520 		ttmp->value.integer = prkey;

   521 		prkey = NULL;

   522 		ttmp->type = V_ASN1_INTEGER;

   523 		if (!sk_ASN1_TYPE_push(ndsa, ttmp)) {

   524 			EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);

   525 			goto err;

   526 		}

   527 		ttmp = NULL;

   528 

   529 		if (!(p8->pkey->value.octet_string = ASN1_OCTET_STRING_new())) {

   530 			EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);

   531 			goto err;

   532 		}

   533 

   534 		if (!ASN1_seq_pack_ASN1_TYPE(ndsa, i2d_ASN1_TYPE,

   535 					 &p8->pkey->value.octet_string->data,

   536 					 &p8->pkey->value.octet_string->length)) {

   537 

   538 			EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);

   539 			goto err;

   540 		}

   541 		sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);

   542 		break;

   543 

   544 		case PKCS8_EMBEDDED_PARAM:

   545 

   546 		p8->pkeyalg->parameter->type = V_ASN1_NULL;

   547 		if (!(ndsa = sk_ASN1_TYPE_new_null())) {

   548 			EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);

   549 			goto err;

   550 		}

   551 		if (!(ttmp = ASN1_TYPE_new())) {

   552 			EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);

   553 			goto err;

   554 		}

   555 		ttmp->value.sequence = params;

   556 		params = NULL;

   557 		ttmp->type = V_ASN1_SEQUENCE;

   558 		if (!sk_ASN1_TYPE_push(ndsa, ttmp)) {

   559 			EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);

   560 			goto err;

   561 		}

   562 

   563 		if (!(ttmp = ASN1_TYPE_new())) {

   564 			EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);

   565 			goto err;

   566 		}

   567 		ttmp->value.integer = prkey;

   568 		prkey = NULL;

   569 		ttmp->type = V_ASN1_INTEGER;

   570 		if (!sk_ASN1_TYPE_push(ndsa, ttmp)) {

   571 			EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);

   572 			goto err;

   573 		}

   574 		ttmp = NULL;

   575 

   576 		if (!(p8->pkey->value.octet_string = ASN1_OCTET_STRING_new())) {

   577 			EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);

   578 			goto err;

   579 		}

   580 

   581 		if (!ASN1_seq_pack_ASN1_TYPE(ndsa, i2d_ASN1_TYPE,

   582 					 &p8->pkey->value.octet_string->data,

   583 					 &p8->pkey->value.octet_string->length)) {

   584 

   585 			EVPerr(EVP_F_DSA_PKEY2PKCS8,ERR_R_MALLOC_FAILURE);

   586 			goto err;

   587 		}

   588 		sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);

   589 		break;

   590 	}

   591 	return 1;

   592 err:

   593 	if (p != NULL) OPENSSL_free(p);

   594 	if (params != NULL) ASN1_STRING_free(params);

   595 	if (prkey != NULL) M_ASN1_INTEGER_free(prkey);

   596 	if (ttmp != NULL) ASN1_TYPE_free(ttmp);

   597 	if (ndsa != NULL) sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);

   598 	return 0;

   599 }

   600 #endif

   601 

   602 #ifndef OPENSSL_NO_EC

   603 static int eckey_pkey2pkcs8(PKCS8_PRIV_KEY_INFO *p8, EVP_PKEY *pkey)

   604 {

   605 	EC_KEY		*ec_key;

   606 	const EC_GROUP  *group;

   607 	unsigned char	*p, *pp;

   608 	int 		nid, i, ret = 0;

   609 	unsigned int    tmp_flags, old_flags;

   610 

   611 	ec_key = pkey->pkey.ec;

   612 	if (ec_key == NULL || (group = EC_KEY_get0_group(ec_key)) == NULL) 

   613 	{

   614 		EVPerr(EVP_F_ECKEY_PKEY2PKCS8, EVP_R_MISSING_PARAMETERS);

   615 		return 0;

   616 	}

   617 

   618 	/* set the ec parameters OID */

   619 	if (p8->pkeyalg->algorithm)

   620 		ASN1_OBJECT_free(p8->pkeyalg->algorithm);

   621 

   622 	p8->pkeyalg->algorithm = OBJ_nid2obj(NID_X9_62_id_ecPublicKey);

   623 

   624 	/* set the ec parameters */

   625 

   626 	if (p8->pkeyalg->parameter)

   627 	{

   628 		ASN1_TYPE_free(p8->pkeyalg->parameter);

   629 		p8->pkeyalg->parameter = NULL;

   630 	}

   631 

   632 	if ((p8->pkeyalg->parameter = ASN1_TYPE_new()) == NULL)

   633 	{

   634 		EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);

   635 		return 0;

   636 	}

   637 	

   638 	if (EC_GROUP_get_asn1_flag(group)

   639                      && (nid = EC_GROUP_get_curve_name(group)))

   640 	{

   641 		/* we have a 'named curve' => just set the OID */

   642 		p8->pkeyalg->parameter->type = V_ASN1_OBJECT;

   643 		p8->pkeyalg->parameter->value.object = OBJ_nid2obj(nid);

   644 	}

   645 	else	/* explicit parameters */

   646 	{

   647 		if ((i = i2d_ECParameters(ec_key, NULL)) == 0)

   648 		{

   649 			EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_EC_LIB);

   650 			return 0;

   651 		}

   652 		if ((p = (unsigned char *) OPENSSL_malloc(i)) == NULL)

   653 		{

   654 			EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);

   655 			return 0;

   656 		}	

   657 		pp = p;

   658 		if (!i2d_ECParameters(ec_key, &pp))

   659 		{

   660 			EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_EC_LIB);

   661 			OPENSSL_free(p);

   662 			return 0;

   663 		}

   664 		p8->pkeyalg->parameter->type = V_ASN1_SEQUENCE;

   665 		if ((p8->pkeyalg->parameter->value.sequence 

   666 			= ASN1_STRING_new()) == NULL)

   667 		{

   668 			EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_ASN1_LIB);

   669 			OPENSSL_free(p);

   670 			return 0;

   671 		}

   672 		ASN1_STRING_set(p8->pkeyalg->parameter->value.sequence, p, i);

   673 		OPENSSL_free(p);

   674 	}

   675 

   676 	/* set the private key */

   677 

   678 	/* do not include the parameters in the SEC1 private key

   679 	 * see PKCS#11 12.11 */

   680 	old_flags = EC_KEY_get_enc_flags(pkey->pkey.ec);

   681 	tmp_flags = old_flags | EC_PKEY_NO_PARAMETERS;

   682 	EC_KEY_set_enc_flags(pkey->pkey.ec, tmp_flags);

   683 	i = i2d_ECPrivateKey(pkey->pkey.ec, NULL);

   684 	if (!i)

   685 	{

   686 		EC_KEY_set_enc_flags(pkey->pkey.ec, old_flags);

   687 		EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_EC_LIB);

   688 		return 0;

   689 	}

   690 	p = (unsigned char *) OPENSSL_malloc(i);

   691 	if (!p)

   692 	{

   693 		EC_KEY_set_enc_flags(pkey->pkey.ec, old_flags);

   694 		EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);

   695 		return 0;

   696 	}

   697 	pp = p;

   698 	if (!i2d_ECPrivateKey(pkey->pkey.ec, &pp))

   699 	{

   700 		EC_KEY_set_enc_flags(pkey->pkey.ec, old_flags);

   701 		EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_EC_LIB);

   702 		OPENSSL_free(p);

   703 		return 0;

   704 	}

   705 	/* restore old encoding flags */

   706 	EC_KEY_set_enc_flags(pkey->pkey.ec, old_flags);

   707 

   708 	switch(p8->broken) {

   709 

   710 		case PKCS8_OK:

   711 		p8->pkey->value.octet_string = ASN1_OCTET_STRING_new();

   712 		if (!p8->pkey->value.octet_string ||

   713 		    !M_ASN1_OCTET_STRING_set(p8->pkey->value.octet_string,

   714 		    (const void *)p, i))

   715 

   716 		{

   717 			EVPerr(EVP_F_ECKEY_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);

   718 		}

   719 		else

   720 			ret = 1;

   721 		break;

   722 		case PKCS8_NO_OCTET:		/* RSA specific */

   723 		case PKCS8_NS_DB:		/* DSA specific */

   724 		case PKCS8_EMBEDDED_PARAM:	/* DSA specific */

   725 		default:

   726 			EVPerr(EVP_F_ECKEY_PKEY2PKCS8,EVP_R_ENCODE_ERROR);

   727 	}

   728 	OPENSSL_cleanse(p, (size_t)i);

   729 	OPENSSL_free(p);

   730 	return ret;

   731 }

   732 #endif

   733 

   734 /* EVP_PKEY attribute functions */

   735 

   736 EXPORT_C int EVP_PKEY_get_attr_count(const EVP_PKEY *key)

   737 {

   738 	return X509at_get_attr_count(key->attributes);

   739 }

   740 

   741 EXPORT_C int EVP_PKEY_get_attr_by_NID(const EVP_PKEY *key, int nid,

   742 			  int lastpos)

   743 {

   744 	return X509at_get_attr_by_NID(key->attributes, nid, lastpos);

   745 }

   746 

   747 EXPORT_C int EVP_PKEY_get_attr_by_OBJ(const EVP_PKEY *key, ASN1_OBJECT *obj,

   748 			  int lastpos)

   749 {

   750 	return X509at_get_attr_by_OBJ(key->attributes, obj, lastpos);

   751 }

   752 

   753 EXPORT_C X509_ATTRIBUTE *EVP_PKEY_get_attr(const EVP_PKEY *key, int loc)

   754 {

   755 	return X509at_get_attr(key->attributes, loc);

   756 }

   757 

   758 EXPORT_C X509_ATTRIBUTE *EVP_PKEY_delete_attr(EVP_PKEY *key, int loc)

   759 {

   760 	return X509at_delete_attr(key->attributes, loc);

   761 }

   762 

   763 EXPORT_C int EVP_PKEY_add1_attr(EVP_PKEY *key, X509_ATTRIBUTE *attr)

   764 {

   765 	if(X509at_add1_attr(&key->attributes, attr)) return 1;

   766 	return 0;

   767 }

   768 

   769 EXPORT_C int EVP_PKEY_add1_attr_by_OBJ(EVP_PKEY *key,

   770 			const ASN1_OBJECT *obj, int type,

   771 			const unsigned char *bytes, int len)

   772 {

   773 	if(X509at_add1_attr_by_OBJ(&key->attributes, obj,

   774 				type, bytes, len)) return 1;

   775 	return 0;

   776 }

   777 

   778 EXPORT_C int EVP_PKEY_add1_attr_by_NID(EVP_PKEY *key,

   779 			int nid, int type,

   780 			const unsigned char *bytes, int len)

   781 {

   782 	if(X509at_add1_attr_by_NID(&key->attributes, nid,

   783 				type, bytes, len)) return 1;

   784 	return 0;

   785 }

   786 

   787 EXPORT_C int EVP_PKEY_add1_attr_by_txt(EVP_PKEY *key,

   788 			const char *attrname, int type,

   789 			const unsigned char *bytes, int len)

   790 {

   791 	if(X509at_add1_attr_by_txt(&key->attributes, attrname,

   792 				type, bytes, len)) return 1;

   793 	return 0;

   794 }