sl@0: /* crypto/asn1/x_pubkey.c */
sl@0: /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
sl@0:  * All rights reserved.
sl@0:  *
sl@0:  * This package is an SSL implementation written
sl@0:  * by Eric Young (eay@cryptsoft.com).
sl@0:  * The implementation was written so as to conform with Netscapes SSL.
sl@0:  * 
sl@0:  * This library is free for commercial and non-commercial use as long as
sl@0:  * the following conditions are aheared to.  The following conditions
sl@0:  * apply to all code found in this distribution, be it the RC4, RSA,
sl@0:  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
sl@0:  * included with this distribution is covered by the same copyright terms
sl@0:  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
sl@0:  * 
sl@0:  * Copyright remains Eric Young's, and as such any Copyright notices in
sl@0:  * the code are not to be removed.
sl@0:  * If this package is used in a product, Eric Young should be given attribution
sl@0:  * as the author of the parts of the library used.
sl@0:  * This can be in the form of a textual message at program startup or
sl@0:  * in documentation (online or textual) provided with the package.
sl@0:  * 
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  * 1. Redistributions of source code must retain the copyright
sl@0:  *    notice, this list of conditions and the following disclaimer.
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in the
sl@0:  *    documentation and/or other materials provided with the distribution.
sl@0:  * 3. All advertising materials mentioning features or use of this software
sl@0:  *    must display the following acknowledgement:
sl@0:  *    "This product includes cryptographic software written by
sl@0:  *     Eric Young (eay@cryptsoft.com)"
sl@0:  *    The word 'cryptographic' can be left out if the rouines from the library
sl@0:  *    being used are not cryptographic related :-).
sl@0:  * 4. If you include any Windows specific code (or a derivative thereof) from 
sl@0:  *    the apps directory (application code) you must include an acknowledgement:
sl@0:  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
sl@0:  * 
sl@0:  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
sl@0:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
sl@0:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
sl@0:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
sl@0:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
sl@0:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
sl@0:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
sl@0:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
sl@0:  * SUCH DAMAGE.
sl@0:  * 
sl@0:  * The licence and distribution terms for any publically available version or
sl@0:  * derivative of this code cannot be changed.  i.e. this code cannot simply be
sl@0:  * copied and put under another distribution licence
sl@0:  * [including the GNU Public Licence.]
sl@0:  */
sl@0: 
sl@0: #include <stdio.h>
sl@0: #include "cryptlib.h"
sl@0: #include <openssl/asn1t.h>
sl@0: #include <openssl/x509.h>
sl@0: #ifndef OPENSSL_NO_RSA
sl@0: #include <openssl/rsa.h>
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_DSA
sl@0: #include <openssl/dsa.h>
sl@0: #endif
sl@0: 
sl@0: /* Minor tweak to operation: free up EVP_PKEY */
sl@0: static int pubkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it)
sl@0: 	{
sl@0: 	if (operation == ASN1_OP_FREE_POST)
sl@0: 		{
sl@0: 		X509_PUBKEY *pubkey = (X509_PUBKEY *)*pval;
sl@0: 		EVP_PKEY_free(pubkey->pkey);
sl@0: 		}
sl@0: 	return 1;
sl@0: 	}
sl@0: 
sl@0: ASN1_SEQUENCE_cb(X509_PUBKEY, pubkey_cb) = {
sl@0: 	ASN1_SIMPLE(X509_PUBKEY, algor, X509_ALGOR),
sl@0: 	ASN1_SIMPLE(X509_PUBKEY, public_key, ASN1_BIT_STRING)
sl@0: } ASN1_SEQUENCE_END_cb(X509_PUBKEY, X509_PUBKEY)
sl@0: 
sl@0: IMPLEMENT_ASN1_FUNCTIONS(X509_PUBKEY)
sl@0: 
sl@0: EXPORT_C int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey)
sl@0: 	{
sl@0: 	X509_PUBKEY *pk=NULL;
sl@0: 	X509_ALGOR *a;
sl@0: 	ASN1_OBJECT *o;
sl@0: 	unsigned char *s,*p = NULL;
sl@0: 	int i;
sl@0: 
sl@0: 	if (x == NULL) return(0);
sl@0: 
sl@0: 	if ((pk=X509_PUBKEY_new()) == NULL) goto err;
sl@0: 	a=pk->algor;
sl@0: 
sl@0: 	/* set the algorithm id */
sl@0: 	if ((o=OBJ_nid2obj(pkey->type)) == NULL) goto err;
sl@0: 	ASN1_OBJECT_free(a->algorithm);
sl@0: 	a->algorithm=o;
sl@0: 
sl@0: 	/* Set the parameter list */
sl@0: 	if (!pkey->save_parameters || (pkey->type == EVP_PKEY_RSA))
sl@0: 		{
sl@0: 		if ((a->parameter == NULL) ||
sl@0: 			(a->parameter->type != V_ASN1_NULL))
sl@0: 			{
sl@0: 			ASN1_TYPE_free(a->parameter);
sl@0: 			if (!(a->parameter=ASN1_TYPE_new()))
sl@0: 				{
sl@0: 				X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE);
sl@0: 				goto err;
sl@0: 				}
sl@0: 			a->parameter->type=V_ASN1_NULL;
sl@0: 			}
sl@0: 		}
sl@0: #ifndef OPENSSL_NO_DSA
sl@0: 	else if (pkey->type == EVP_PKEY_DSA)
sl@0: 		{
sl@0: 		unsigned char *pp;
sl@0: 		DSA *dsa;
sl@0: 		
sl@0: 		dsa=pkey->pkey.dsa;
sl@0: 		dsa->write_params=0;
sl@0: 		ASN1_TYPE_free(a->parameter);
sl@0: 		if ((i=i2d_DSAparams(dsa,NULL)) <= 0)
sl@0: 			goto err;
sl@0: 		if (!(p=(unsigned char *)OPENSSL_malloc(i)))
sl@0: 			{
sl@0: 			X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE);
sl@0: 			goto err;
sl@0: 			}
sl@0: 		pp=p;
sl@0: 		i2d_DSAparams(dsa,&pp);
sl@0: 		if (!(a->parameter=ASN1_TYPE_new()))
sl@0: 			{
sl@0: 			OPENSSL_free(p);
sl@0: 			X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE);
sl@0: 			goto err;
sl@0: 			}
sl@0: 		a->parameter->type=V_ASN1_SEQUENCE;
sl@0: 		if (!(a->parameter->value.sequence=ASN1_STRING_new()))
sl@0: 			{
sl@0: 			OPENSSL_free(p);
sl@0: 			X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE);
sl@0: 			goto err;
sl@0: 			}
sl@0: 		if (!ASN1_STRING_set(a->parameter->value.sequence,p,i))
sl@0: 			{
sl@0: 			OPENSSL_free(p);
sl@0: 			X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE);
sl@0: 			goto err;
sl@0: 			}
sl@0: 		OPENSSL_free(p);
sl@0: 		}
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_EC
sl@0: 	else if (pkey->type == EVP_PKEY_EC)
sl@0: 		{
sl@0: 		int nid=0;
sl@0: 		unsigned char *pp;
sl@0: 		EC_KEY *ec_key;
sl@0: 		const EC_GROUP *group;
sl@0: 		
sl@0: 		ec_key = pkey->pkey.ec;
sl@0: 		ASN1_TYPE_free(a->parameter);
sl@0: 
sl@0: 		if ((a->parameter = ASN1_TYPE_new()) == NULL)
sl@0: 			{
sl@0: 			X509err(X509_F_X509_PUBKEY_SET, ERR_R_ASN1_LIB);
sl@0: 			goto err;
sl@0: 			}
sl@0: 
sl@0: 		group = EC_KEY_get0_group(ec_key);
sl@0: 		if (EC_GROUP_get_asn1_flag(group)
sl@0:                      && (nid = EC_GROUP_get_curve_name(group)))
sl@0: 			{
sl@0: 			/* just set the OID */
sl@0: 			a->parameter->type = V_ASN1_OBJECT;
sl@0: 			a->parameter->value.object = OBJ_nid2obj(nid);
sl@0: 			}
sl@0: 		else /* explicit parameters */
sl@0: 			{
sl@0: 			if ((i = i2d_ECParameters(ec_key, NULL)) == 0)
sl@0: 				{
sl@0: 				X509err(X509_F_X509_PUBKEY_SET, ERR_R_EC_LIB);
sl@0: 				goto err;
sl@0: 				}
sl@0: 			if ((p = (unsigned char *) OPENSSL_malloc(i)) == NULL)
sl@0: 				{
sl@0: 				X509err(X509_F_X509_PUBKEY_SET, ERR_R_MALLOC_FAILURE);
sl@0: 				goto err;
sl@0: 				}	
sl@0: 			pp = p;
sl@0: 			if (!i2d_ECParameters(ec_key, &pp))
sl@0: 				{
sl@0: 				X509err(X509_F_X509_PUBKEY_SET, ERR_R_EC_LIB);
sl@0: 				OPENSSL_free(p);
sl@0: 				goto err;
sl@0: 				}
sl@0: 			a->parameter->type = V_ASN1_SEQUENCE;
sl@0: 			if ((a->parameter->value.sequence = ASN1_STRING_new()) == NULL)
sl@0: 				{
sl@0: 				X509err(X509_F_X509_PUBKEY_SET, ERR_R_ASN1_LIB);
sl@0: 				OPENSSL_free(p);
sl@0: 				goto err;
sl@0: 				}
sl@0: 			ASN1_STRING_set(a->parameter->value.sequence, p, i);
sl@0: 			OPENSSL_free(p);
sl@0: 			}
sl@0: 		}
sl@0: #endif
sl@0: 	else if (1)
sl@0: 		{
sl@0: 		X509err(X509_F_X509_PUBKEY_SET,X509_R_UNSUPPORTED_ALGORITHM);
sl@0: 		goto err;
sl@0: 		}
sl@0: 
sl@0: 	if ((i=i2d_PublicKey(pkey,NULL)) <= 0) goto err;
sl@0: 	if ((s=(unsigned char *)OPENSSL_malloc(i+1)) == NULL)
sl@0: 		{
sl@0: 		X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE);
sl@0: 		goto err;
sl@0: 		}
sl@0: 	p=s;
sl@0: 	i2d_PublicKey(pkey,&p);
sl@0: 	if (!M_ASN1_BIT_STRING_set(pk->public_key,s,i))
sl@0: 		{
sl@0: 		X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE);
sl@0: 		goto err;
sl@0: 		}
sl@0:   	/* Set number of unused bits to zero */
sl@0: 	pk->public_key->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07);
sl@0: 	pk->public_key->flags|=ASN1_STRING_FLAG_BITS_LEFT;
sl@0: 
sl@0: 	OPENSSL_free(s);
sl@0: 
sl@0: #if 0
sl@0: 	CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
sl@0: 	pk->pkey=pkey;
sl@0: #endif
sl@0: 
sl@0: 	if (*x != NULL)
sl@0: 		X509_PUBKEY_free(*x);
sl@0: 
sl@0: 	*x=pk;
sl@0: 
sl@0: 	return 1;
sl@0: err:
sl@0: 	if (pk != NULL) X509_PUBKEY_free(pk);
sl@0: 	return 0;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C EVP_PKEY *X509_PUBKEY_get(X509_PUBKEY *key)
sl@0: 	{
sl@0: 	EVP_PKEY *ret=NULL;
sl@0: 	long j;
sl@0: 	int type;
sl@0: 	const unsigned char *p;
sl@0: #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
sl@0: 	const unsigned char *cp;
sl@0: 	X509_ALGOR *a;
sl@0: #endif
sl@0: 
sl@0: 	if (key == NULL) goto err;
sl@0: 
sl@0: 	if (key->pkey != NULL)
sl@0: 		{
sl@0: 		CRYPTO_add(&key->pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
sl@0: 		return(key->pkey);
sl@0: 		}
sl@0: 
sl@0: 	if (key->public_key == NULL) goto err;
sl@0: 
sl@0: 	type=OBJ_obj2nid(key->algor->algorithm);
sl@0: 	if ((ret = EVP_PKEY_new()) == NULL)
sl@0: 		{
sl@0: 		X509err(X509_F_X509_PUBKEY_GET, ERR_R_MALLOC_FAILURE);
sl@0: 		goto err;
sl@0: 		}
sl@0: 	ret->type = EVP_PKEY_type(type);
sl@0: 
sl@0: 	/* the parameters must be extracted before the public key (ECDSA!) */
sl@0: 	
sl@0: #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
sl@0: 	a=key->algor;
sl@0: #endif
sl@0: 
sl@0: 	if (0)
sl@0: 		;
sl@0: #ifndef OPENSSL_NO_DSA
sl@0: 	else if (ret->type == EVP_PKEY_DSA)
sl@0: 		{
sl@0: 		if (a->parameter && (a->parameter->type == V_ASN1_SEQUENCE))
sl@0: 			{
sl@0: 			if ((ret->pkey.dsa = DSA_new()) == NULL)
sl@0: 				{
sl@0: 				X509err(X509_F_X509_PUBKEY_GET, ERR_R_MALLOC_FAILURE);
sl@0: 				goto err;
sl@0: 				}
sl@0: 			ret->pkey.dsa->write_params=0;
sl@0: 			cp=p=a->parameter->value.sequence->data;
sl@0: 			j=a->parameter->value.sequence->length;
sl@0: 			if (!d2i_DSAparams(&ret->pkey.dsa, &cp, (long)j))
sl@0: 				goto err;
sl@0: 			}
sl@0: 		ret->save_parameters=1;
sl@0: 		}
sl@0: #endif
sl@0: #ifndef OPENSSL_NO_EC
sl@0: 	else if (ret->type == EVP_PKEY_EC)
sl@0: 		{
sl@0: 		if (a->parameter && (a->parameter->type == V_ASN1_SEQUENCE))
sl@0: 			{
sl@0: 			/* type == V_ASN1_SEQUENCE => we have explicit parameters
sl@0:                          * (e.g. parameters in the X9_62_EC_PARAMETERS-structure )
sl@0: 			 */
sl@0: 			if ((ret->pkey.ec= EC_KEY_new()) == NULL)
sl@0: 				{
sl@0: 				X509err(X509_F_X509_PUBKEY_GET, 
sl@0: 					ERR_R_MALLOC_FAILURE);
sl@0: 				goto err;
sl@0: 				}
sl@0: 			cp = p = a->parameter->value.sequence->data;
sl@0: 			j = a->parameter->value.sequence->length;
sl@0: 			if (!d2i_ECParameters(&ret->pkey.ec, &cp, (long)j))
sl@0: 				{
sl@0: 				X509err(X509_F_X509_PUBKEY_GET, ERR_R_EC_LIB);
sl@0: 				goto err;
sl@0: 				}
sl@0: 			}
sl@0: 		else if (a->parameter && (a->parameter->type == V_ASN1_OBJECT))
sl@0: 			{
sl@0: 			/* type == V_ASN1_OBJECT => the parameters are given
sl@0: 			 * by an asn1 OID
sl@0: 			 */
sl@0: 			EC_KEY   *ec_key;
sl@0: 			EC_GROUP *group;
sl@0: 
sl@0: 			if (ret->pkey.ec == NULL)
sl@0: 				ret->pkey.ec = EC_KEY_new();
sl@0: 			ec_key = ret->pkey.ec;
sl@0: 			if (ec_key == NULL)
sl@0: 				goto err;
sl@0: 			group = EC_GROUP_new_by_curve_name(OBJ_obj2nid(a->parameter->value.object));
sl@0: 			if (group == NULL)
sl@0: 				goto err;
sl@0: 			EC_GROUP_set_asn1_flag(group, OPENSSL_EC_NAMED_CURVE);
sl@0: 			if (EC_KEY_set_group(ec_key, group) == 0)
sl@0: 				goto err;
sl@0: 			EC_GROUP_free(group);
sl@0: 			}
sl@0: 			/* the case implicitlyCA is currently not implemented */
sl@0: 		ret->save_parameters = 1;
sl@0: 		}
sl@0: #endif
sl@0: 
sl@0: 	p=key->public_key->data;
sl@0:         j=key->public_key->length;
sl@0:         if (!d2i_PublicKey(type, &ret, &p, (long)j))
sl@0: 		{
sl@0: 		X509err(X509_F_X509_PUBKEY_GET, X509_R_ERR_ASN1_LIB);
sl@0: 		goto err;
sl@0: 		}
sl@0: 
sl@0: 	key->pkey = ret;
sl@0: 	CRYPTO_add(&ret->references, 1, CRYPTO_LOCK_EVP_PKEY);
sl@0: 	return(ret);
sl@0: err:
sl@0: 	if (ret != NULL)
sl@0: 		EVP_PKEY_free(ret);
sl@0: 	return(NULL);
sl@0: 	}
sl@0: 
sl@0: /* Now two pseudo ASN1 routines that take an EVP_PKEY structure
sl@0:  * and encode or decode as X509_PUBKEY
sl@0:  */
sl@0: 
sl@0: EXPORT_C EVP_PKEY *d2i_PUBKEY(EVP_PKEY **a, const unsigned char **pp,
sl@0: 	     long length)
sl@0: 	{
sl@0: 	X509_PUBKEY *xpk;
sl@0: 	EVP_PKEY *pktmp;
sl@0: 	xpk = d2i_X509_PUBKEY(NULL, pp, length);
sl@0: 	if(!xpk) return NULL;
sl@0: 	pktmp = X509_PUBKEY_get(xpk);
sl@0: 	X509_PUBKEY_free(xpk);
sl@0: 	if(!pktmp) return NULL;
sl@0: 	if(a)
sl@0: 		{
sl@0: 		EVP_PKEY_free(*a);
sl@0: 		*a = pktmp;
sl@0: 		}
sl@0: 	return pktmp;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int i2d_PUBKEY(EVP_PKEY *a, unsigned char **pp)
sl@0: 	{
sl@0: 	X509_PUBKEY *xpk=NULL;
sl@0: 	int ret;
sl@0: 	if(!a) return 0;
sl@0: 	if(!X509_PUBKEY_set(&xpk, a)) return 0;
sl@0: 	ret = i2d_X509_PUBKEY(xpk, pp);
sl@0: 	X509_PUBKEY_free(xpk);
sl@0: 	return ret;
sl@0: 	}
sl@0: 
sl@0: /* The following are equivalents but which return RSA and DSA
sl@0:  * keys
sl@0:  */
sl@0: #ifndef OPENSSL_NO_RSA
sl@0: EXPORT_C RSA *d2i_RSA_PUBKEY(RSA **a, const unsigned char **pp,
sl@0: 	     long length)
sl@0: 	{
sl@0: 	EVP_PKEY *pkey;
sl@0: 	RSA *key;
sl@0: 	const unsigned char *q;
sl@0: 	q = *pp;
sl@0: 	pkey = d2i_PUBKEY(NULL, &q, length);
sl@0: 	if (!pkey) return NULL;
sl@0: 	key = EVP_PKEY_get1_RSA(pkey);
sl@0: 	EVP_PKEY_free(pkey);
sl@0: 	if (!key) return NULL;
sl@0: 	*pp = q;
sl@0: 	if (a)
sl@0: 		{
sl@0: 		RSA_free(*a);
sl@0: 		*a = key;
sl@0: 		}
sl@0: 	return key;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int i2d_RSA_PUBKEY(RSA *a, unsigned char **pp)
sl@0: 	{
sl@0: 	EVP_PKEY *pktmp;
sl@0: 	int ret;
sl@0: 	if (!a) return 0;
sl@0: 	pktmp = EVP_PKEY_new();
sl@0: 	if (!pktmp)
sl@0: 		{
sl@0: 		ASN1err(ASN1_F_I2D_RSA_PUBKEY, ERR_R_MALLOC_FAILURE);
sl@0: 		return 0;
sl@0: 		}
sl@0: 	EVP_PKEY_set1_RSA(pktmp, a);
sl@0: 	ret = i2d_PUBKEY(pktmp, pp);
sl@0: 	EVP_PKEY_free(pktmp);
sl@0: 	return ret;
sl@0: 	}
sl@0: #endif
sl@0: 
sl@0: #ifndef OPENSSL_NO_DSA
sl@0: EXPORT_C DSA *d2i_DSA_PUBKEY(DSA **a, const unsigned char **pp,
sl@0: 	     long length)
sl@0: 	{
sl@0: 	EVP_PKEY *pkey;
sl@0: 	DSA *key;
sl@0: 	const unsigned char *q;
sl@0: 	q = *pp;
sl@0: 	pkey = d2i_PUBKEY(NULL, &q, length);
sl@0: 	if (!pkey) return NULL;
sl@0: 	key = EVP_PKEY_get1_DSA(pkey);
sl@0: 	EVP_PKEY_free(pkey);
sl@0: 	if (!key) return NULL;
sl@0: 	*pp = q;
sl@0: 	if (a)
sl@0: 		{
sl@0: 		DSA_free(*a);
sl@0: 		*a = key;
sl@0: 		}
sl@0: 	return key;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int i2d_DSA_PUBKEY(DSA *a, unsigned char **pp)
sl@0: 	{
sl@0: 	EVP_PKEY *pktmp;
sl@0: 	int ret;
sl@0: 	if(!a) return 0;
sl@0: 	pktmp = EVP_PKEY_new();
sl@0: 	if(!pktmp)
sl@0: 		{
sl@0: 		ASN1err(ASN1_F_I2D_DSA_PUBKEY, ERR_R_MALLOC_FAILURE);
sl@0: 		return 0;
sl@0: 		}
sl@0: 	EVP_PKEY_set1_DSA(pktmp, a);
sl@0: 	ret = i2d_PUBKEY(pktmp, pp);
sl@0: 	EVP_PKEY_free(pktmp);
sl@0: 	return ret;
sl@0: 	}
sl@0: #endif
sl@0: 
sl@0: #ifndef OPENSSL_NO_EC
sl@0: EXPORT_C EC_KEY *d2i_EC_PUBKEY(EC_KEY **a, const unsigned char **pp, long length)
sl@0: 	{
sl@0: 	EVP_PKEY *pkey;
sl@0: 	EC_KEY *key;
sl@0: 	const unsigned char *q;
sl@0: 	q = *pp;
sl@0: 	pkey = d2i_PUBKEY(NULL, &q, length);
sl@0: 	if (!pkey) return(NULL);
sl@0: 	key = EVP_PKEY_get1_EC_KEY(pkey);
sl@0: 	EVP_PKEY_free(pkey);
sl@0: 	if (!key)  return(NULL);
sl@0: 	*pp = q;
sl@0: 	if (a)
sl@0: 		{
sl@0: 		EC_KEY_free(*a);
sl@0: 		*a = key;
sl@0: 		}
sl@0: 	return(key);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int i2d_EC_PUBKEY(EC_KEY *a, unsigned char **pp)
sl@0: 	{
sl@0: 	EVP_PKEY *pktmp;
sl@0: 	int ret;
sl@0: 	if (!a)	return(0);
sl@0: 	if ((pktmp = EVP_PKEY_new()) == NULL)
sl@0: 		{
sl@0: 		ASN1err(ASN1_F_I2D_EC_PUBKEY, ERR_R_MALLOC_FAILURE);
sl@0: 		return(0);
sl@0: 		}
sl@0: 	EVP_PKEY_set1_EC_KEY(pktmp, a);
sl@0: 	ret = i2d_PUBKEY(pktmp, pp);
sl@0: 	EVP_PKEY_free(pktmp);
sl@0: 	return(ret);
sl@0: 	}
sl@0: #endif