[thirdparty/openssl.git] / crypto / asn1 / x_pubkey.c

/* crypto/asn1/x_pubkey.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 * 
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 * 
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from 
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 * 
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * 
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#include <stdio.h>
#include "cryptlib.h"
#include <openssl/asn1t.h>
#include <openssl/x509.h>

/* Minor tweak to operation: free up EVP_PKEY */
static int pubkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it)
	{
	if (operation == ASN1_OP_FREE_POST)
		{
		X509_PUBKEY *pubkey = (X509_PUBKEY *)*pval;
		EVP_PKEY_free(pubkey->pkey);
		}
	return 1;
	}

ASN1_SEQUENCE_cb(X509_PUBKEY, pubkey_cb) = {
	ASN1_SIMPLE(X509_PUBKEY, algor, X509_ALGOR),
	ASN1_SIMPLE(X509_PUBKEY, public_key, ASN1_BIT_STRING)
} ASN1_SEQUENCE_END_cb(X509_PUBKEY, X509_PUBKEY)

IMPLEMENT_ASN1_FUNCTIONS(X509_PUBKEY)

int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey)
	{
	int ok=0;
	X509_PUBKEY *pk;
	X509_ALGOR *a;
	ASN1_OBJECT *o;
	unsigned char *s,*p = NULL;
	int i;

	if (x == NULL) return(0);

	if ((pk=X509_PUBKEY_new()) == NULL) goto err;
	a=pk->algor;

	/* set the algorithm id */
	if ((o=OBJ_nid2obj(pkey->type)) == NULL) goto err;
	ASN1_OBJECT_free(a->algorithm);
	a->algorithm=o;

	/* Set the parameter list */
	if (!pkey->save_parameters || (pkey->type == EVP_PKEY_RSA))
		{
		if ((a->parameter == NULL) ||
			(a->parameter->type != V_ASN1_NULL))
			{
			ASN1_TYPE_free(a->parameter);
			a->parameter=ASN1_TYPE_new();
			a->parameter->type=V_ASN1_NULL;
			}
		}
#ifndef OPENSSL_NO_DSA
	else if (pkey->type == EVP_PKEY_DSA)
		{
		unsigned char *pp;
		DSA *dsa;
		
		dsa=pkey->pkey.dsa;
		dsa->write_params=0;
		ASN1_TYPE_free(a->parameter);
		i=i2d_DSAparams(dsa,NULL);
		if ((p=(unsigned char *)OPENSSL_malloc(i)) == NULL) goto err;
		pp=p;
		i2d_DSAparams(dsa,&pp);
		a->parameter=ASN1_TYPE_new();
		a->parameter->type=V_ASN1_SEQUENCE;
		a->parameter->value.sequence=ASN1_STRING_new();
		ASN1_STRING_set(a->parameter->value.sequence,p,i);
		OPENSSL_free(p);
		}
#endif
#ifndef OPENSSL_NO_ECDSA
	else if (pkey->type == EVP_PKEY_ECDSA)
		{
		int nid=0;
		unsigned char *pp;
		ECDSA *ecdsa;
		
		ecdsa = pkey->pkey.ecdsa;
		ASN1_TYPE_free(a->parameter);

		if ((a->parameter = ASN1_TYPE_new()) == NULL)
			{
			X509err(X509_F_X509_PUBKEY_SET, ERR_R_ASN1_LIB);
			goto err;
			}

		if (EC_GROUP_get_asn1_flag(ecdsa->group)
                     && (nid = EC_GROUP_get_nid(ecdsa->group)))
			{
			/* just set the OID */
			a->parameter->type = V_ASN1_OBJECT;
			a->parameter->value.object = OBJ_nid2obj(nid);
			}
		else /* explicit parameters */
			{
			if ((i = i2d_ECDSAParameters(ecdsa, NULL)) == 0)
				{
				X509err(X509_F_X509_PUBKEY_SET, ERR_R_ECDSA_LIB);
				goto err;
				}
			if ((p = (unsigned char *) OPENSSL_malloc(i)) == NULL)
				{
				X509err(X509_F_X509_PUBKEY_SET, ERR_R_MALLOC_FAILURE);
				goto err;
				}	
			pp = p;
			if (!i2d_ECDSAParameters(ecdsa, &pp))
				{
				X509err(X509_F_X509_PUBKEY_SET, ERR_R_ECDSA_LIB);
				OPENSSL_free(p);
				goto err;
				}
			a->parameter->type = V_ASN1_SEQUENCE;
			if ((a->parameter->value.sequence = ASN1_STRING_new()) == NULL)
				{
				X509err(X509_F_X509_PUBKEY_SET, ERR_R_ASN1_LIB);
				OPENSSL_free(p);
				goto err;
				}
			ASN1_STRING_set(a->parameter->value.sequence, p, i);
			OPENSSL_free(p);
			}
		}
#endif
	else if (1)
		{
		X509err(X509_F_X509_PUBKEY_SET,X509_R_UNSUPPORTED_ALGORITHM);
		goto err;
		}

	if ((i=i2d_PublicKey(pkey,NULL)) <= 0) goto err;
	if ((s=(unsigned char *)OPENSSL_malloc(i+1)) == NULL)
		{
		X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE);
		goto err;
		}
	p=s;
	i2d_PublicKey(pkey,&p);
	if (!M_ASN1_BIT_STRING_set(pk->public_key,s,i)) goto err;
	/* Set number of unused bits to zero */
	pk->public_key->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07);
	pk->public_key->flags|=ASN1_STRING_FLAG_BITS_LEFT;

	OPENSSL_free(s);

#if 0
	CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
	pk->pkey=pkey;
#endif

	if (*x != NULL)
		X509_PUBKEY_free(*x);

	*x=pk;
	pk=NULL;

	ok=1;
err:
	if (pk != NULL) X509_PUBKEY_free(pk);
	return(ok);
	}

EVP_PKEY *X509_PUBKEY_get(X509_PUBKEY *key)
	{
	EVP_PKEY *ret=NULL;
	long j;
	int type;
	unsigned char *p;
#if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
	const unsigned char *cp;
	X509_ALGOR *a;
#endif

	if (key == NULL) goto err;

	if (key->pkey != NULL)
		{
		CRYPTO_add(&key->pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
		return(key->pkey);
		}

	if (key->public_key == NULL) goto err;

	type=OBJ_obj2nid(key->algor->algorithm);
	if ((ret = EVP_PKEY_new()) == NULL)
		{
		X509err(X509_F_X509_PUBKEY_GET, ERR_R_MALLOC_FAILURE);
		goto err;
		}
	ret->type = EVP_PKEY_type(type);

	/* the parameters must be extracted before the public key (ECDSA!) */
	
#if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
	a=key->algor;
#endif

	if (0)
		;
#ifndef OPENSSL_NO_DSA
	else if (ret->type == EVP_PKEY_DSA)
		{
		if (a->parameter && (a->parameter->type == V_ASN1_SEQUENCE))
			{
			if ((ret->pkey.dsa = DSA_new()) == NULL)
				{
				X509err(X509_F_X509_PUBKEY_GET, ERR_R_MALLOC_FAILURE);
				goto err;
				}
			ret->pkey.dsa->write_params=0;
			cp=p=a->parameter->value.sequence->data;
			j=a->parameter->value.sequence->length;
			if (!d2i_DSAparams(&ret->pkey.dsa, &cp, (long)j))
				goto err;
			}
		ret->save_parameters=1;
		}
#endif
#ifndef OPENSSL_NO_ECDSA
	else if (ret->type == EVP_PKEY_ECDSA)
		{
		if (a->parameter && (a->parameter->type == V_ASN1_SEQUENCE))
			{
			/* type == V_ASN1_SEQUENCE => we have explicit parameters
                         * (e.g. parameters in the X9_62_EC_PARAMETERS-structure )
			 */
			if ((ret->pkey.ecdsa= ECDSA_new()) == NULL)
				{
				X509err(X509_F_X509_PUBKEY_GET, ERR_R_MALLOC_FAILURE);
				goto err;
				}
			cp = p = a->parameter->value.sequence->data;
			j = a->parameter->value.sequence->length;
			if (!d2i_ECDSAParameters(&ret->pkey.ecdsa, &cp, (long)j))
				{
				X509err(X509_F_X509_PUBKEY_GET, ERR_R_ECDSA_LIB);
				goto err;
				}
			}
		else if (a->parameter && (a->parameter->type == V_ASN1_OBJECT))
			{
			/* type == V_ASN1_OBJECT => the parameters are given
			 * by an asn1 OID
			 */
			ECDSA *ecdsa;
			if (ret->pkey.ecdsa == NULL)
				ret->pkey.ecdsa = ECDSA_new();
			ecdsa = ret->pkey.ecdsa;
			if (ecdsa->group)
				EC_GROUP_free(ecdsa->group);
			if ((ecdsa->group = EC_GROUP_new_by_name(
                             OBJ_obj2nid(a->parameter->value.object))) == NULL)
				goto err;
			EC_GROUP_set_asn1_flag(ecdsa->group, 
						OPENSSL_EC_NAMED_CURVE);
			}
			/* the case implicitlyCA is currently not implemented */
		ret->save_parameters = 1;
		}
#endif

	p=key->public_key->data;
        j=key->public_key->length;
        if ((ret = d2i_PublicKey(type, &ret, &p, (long)j)) == NULL)
		{
		X509err(X509_F_X509_PUBKEY_GET, X509_R_ERR_ASN1_LIB);
		goto err;
		}

	key->pkey = ret;
	CRYPTO_add(&ret->references, 1, CRYPTO_LOCK_EVP_PKEY);
	return(ret);
err:
	if (ret != NULL)
		EVP_PKEY_free(ret);
	return(NULL);
	}

/* Now two pseudo ASN1 routines that take an EVP_PKEY structure
 * and encode or decode as X509_PUBKEY
 */

EVP_PKEY *d2i_PUBKEY(EVP_PKEY **a, unsigned char **pp,
	     long length)
	{
	X509_PUBKEY *xpk;
	EVP_PKEY *pktmp;
	xpk = d2i_X509_PUBKEY(NULL, pp, length);
	if(!xpk) return NULL;
	pktmp = X509_PUBKEY_get(xpk);
	X509_PUBKEY_free(xpk);
	if(!pktmp) return NULL;
	if(a)
		{
		EVP_PKEY_free(*a);
		*a = pktmp;
		}
	return pktmp;
	}

int i2d_PUBKEY(EVP_PKEY *a, unsigned char **pp)
	{
	X509_PUBKEY *xpk=NULL;
	int ret;
	if(!a) return 0;
	if(!X509_PUBKEY_set(&xpk, a)) return 0;
	ret = i2d_X509_PUBKEY(xpk, pp);
	X509_PUBKEY_free(xpk);
	return ret;
	}

/* The following are equivalents but which return RSA and DSA
 * keys
 */
#ifndef OPENSSL_NO_RSA
RSA *d2i_RSA_PUBKEY(RSA **a, unsigned char **pp,
	     long length)
	{
	EVP_PKEY *pkey;
	RSA *key;
	unsigned char *q;
	q = *pp;
	pkey = d2i_PUBKEY(NULL, &q, length);
	if (!pkey) return NULL;
	key = EVP_PKEY_get1_RSA(pkey);
	EVP_PKEY_free(pkey);
	if (!key) return NULL;
	*pp = q;
	if (a)
		{
		RSA_free(*a);
		*a = key;
		}
	return key;
	}

int i2d_RSA_PUBKEY(RSA *a, unsigned char **pp)
	{
	EVP_PKEY *pktmp;
	int ret;
	if (!a) return 0;
	pktmp = EVP_PKEY_new();
	if (!pktmp)
		{
		ASN1err(ASN1_F_I2D_RSA_PUBKEY, ERR_R_MALLOC_FAILURE);
		return 0;
		}
	EVP_PKEY_set1_RSA(pktmp, a);
	ret = i2d_PUBKEY(pktmp, pp);
	EVP_PKEY_free(pktmp);
	return ret;
	}
#endif

#ifndef OPENSSL_NO_DSA
DSA *d2i_DSA_PUBKEY(DSA **a, unsigned char **pp,
	     long length)
	{
	EVP_PKEY *pkey;
	DSA *key;
	unsigned char *q;
	q = *pp;
	pkey = d2i_PUBKEY(NULL, &q, length);
	if (!pkey) return NULL;
	key = EVP_PKEY_get1_DSA(pkey);
	EVP_PKEY_free(pkey);
	if (!key) return NULL;
	*pp = q;
	if (a)
		{
		DSA_free(*a);
		*a = key;
		}
	return key;
	}

int i2d_DSA_PUBKEY(DSA *a, unsigned char **pp)
	{
	EVP_PKEY *pktmp;
	int ret;
	if(!a) return 0;
	pktmp = EVP_PKEY_new();
	if(!pktmp)
		{
		ASN1err(ASN1_F_I2D_DSA_PUBKEY, ERR_R_MALLOC_FAILURE);
		return 0;
		}
	EVP_PKEY_set1_DSA(pktmp, a);
	ret = i2d_PUBKEY(pktmp, pp);
	EVP_PKEY_free(pktmp);
	return ret;
	}
#endif

#ifndef OPENSSL_NO_ECDSA
ECDSA *d2i_ECDSA_PUBKEY(ECDSA **a, unsigned char **pp, long length)
	{
	EVP_PKEY *pkey;
	ECDSA *key;
	unsigned char *q;
	q = *pp;
	pkey = d2i_PUBKEY(NULL, &q, length);
	if (!pkey) return(NULL);
	key = EVP_PKEY_get1_ECDSA(pkey);
	EVP_PKEY_free(pkey);
	if (!key)  return(NULL);
	*pp = q;
	if (a)
		{
		ECDSA_free(*a);
		*a = key;
		}
	return(key);
	}

int i2d_ECDSA_PUBKEY(ECDSA *a, unsigned char **pp)
	{
	EVP_PKEY *pktmp;
	int ret;
	if (!a)	return(0);
	if ((pktmp = EVP_PKEY_new()) == NULL)
		{
		ASN1err(ASN1_F_I2D_ECDSA_PUBKEY, ERR_R_MALLOC_FAILURE);
		return(0);
		}
	EVP_PKEY_set1_ECDSA(pktmp, a);
	ret = i2d_PUBKEY(pktmp, pp);
	EVP_PKEY_free(pktmp);
	return(ret);
	}
#endif
Commit	Line	Data
d02b48c6	1	/* crypto/asn1/x_pubkey.c */
58964a49	2	/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
d02b48c6 RE	3	* All rights reserved.
	4	*
	5	* This package is an SSL implementation written
	6	* by Eric Young (eay@cryptsoft.com).
	7	* The implementation was written so as to conform with Netscapes SSL.
	8	*
	9	* This library is free for commercial and non-commercial use as long as
	10	* the following conditions are aheared to. The following conditions
	11	* apply to all code found in this distribution, be it the RC4, RSA,
	12	* lhash, DES, etc., code; not just the SSL code. The SSL documentation
	13	* included with this distribution is covered by the same copyright terms
	14	* except that the holder is Tim Hudson (tjh@cryptsoft.com).
	15	*
	16	* Copyright remains Eric Young's, and as such any Copyright notices in
	17	* the code are not to be removed.
	18	* If this package is used in a product, Eric Young should be given attribution
	19	* as the author of the parts of the library used.
	20	* This can be in the form of a textual message at program startup or
	21	* in documentation (online or textual) provided with the package.
	22	*
	23	* Redistribution and use in source and binary forms, with or without
	24	* modification, are permitted provided that the following conditions
	25	* are met:
	26	* 1. Redistributions of source code must retain the copyright
	27	* notice, this list of conditions and the following disclaimer.
	28	* 2. Redistributions in binary form must reproduce the above copyright
	29	* notice, this list of conditions and the following disclaimer in the
	30	* documentation and/or other materials provided with the distribution.
	31	* 3. All advertising materials mentioning features or use of this software
	32	* must display the following acknowledgement:
	33	* "This product includes cryptographic software written by
	34	* Eric Young (eay@cryptsoft.com)"
	35	* The word 'cryptographic' can be left out if the rouines from the library
	36	* being used are not cryptographic related :-).
	37	* 4. If you include any Windows specific code (or a derivative thereof) from
	38	* the apps directory (application code) you must include an acknowledgement:
	39	* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
	40	*
	41	* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
	42	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	43	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	44	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	45	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	46	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	47	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	48	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	49	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	50	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	51	* SUCH DAMAGE.
	52	*
	53	* The licence and distribution terms for any publically available version or
	54	* derivative of this code cannot be changed. i.e. this code cannot simply be
	55	* copied and put under another distribution licence
	56	* [including the GNU Public Licence.]
	57	*/
	58
	59	#include <stdio.h>
	60	#include "cryptlib.h"
9d6b1ce6	61	#include <openssl/asn1t.h>
f0e8ae72	62	#include <openssl/x509.h>
d02b48c6	63
9d6b1ce6 DSH	64	/* Minor tweak to operation: free up EVP_PKEY */
9d6b1ce6 DSH	65	static int pubkey_cb(int operation, ASN1_VALUE *pval, const ASN1_ITEM it)
4d94ae00 BM	66	{
	67	if (operation == ASN1_OP_FREE_POST)
	68	{
9d6b1ce6 DSH	69	X509_PUBKEY pubkey = (X509_PUBKEY )*pval;
9d6b1ce6 DSH	70	EVP_PKEY_free(pubkey->pkey);
4d94ae00	71	}
9d6b1ce6	72	return 1;
4d94ae00	73	}
d02b48c6	74
9d6b1ce6 DSH	75	ASN1_SEQUENCE_cb(X509_PUBKEY, pubkey_cb) = {
	76	ASN1_SIMPLE(X509_PUBKEY, algor, X509_ALGOR),
	77	ASN1_SIMPLE(X509_PUBKEY, public_key, ASN1_BIT_STRING)
d339187b	78	} ASN1_SEQUENCE_END_cb(X509_PUBKEY, X509_PUBKEY)
d02b48c6	79
9d6b1ce6	80	IMPLEMENT_ASN1_FUNCTIONS(X509_PUBKEY)
d02b48c6	81
6b691a5c	82	int X509_PUBKEY_set(X509_PUBKEY *x, EVP_PKEY pkey)
d02b48c6 RE	83	{
	84	int ok=0;
	85	X509_PUBKEY *pk;
	86	X509_ALGOR *a;
	87	ASN1_OBJECT *o;
2d7ab7e9	88	unsigned char s,p = NULL;
d02b48c6 RE	89	int i;
	90
	91	if (x == NULL) return(0);
	92
	93	if ((pk=X509_PUBKEY_new()) == NULL) goto err;
	94	a=pk->algor;
	95
	96	/* set the algorithm id */
	97	if ((o=OBJ_nid2obj(pkey->type)) == NULL) goto err;
	98	ASN1_OBJECT_free(a->algorithm);
	99	a->algorithm=o;
	100
	101	/* Set the parameter list */
	102	if (!pkey->save_parameters \|\| (pkey->type == EVP_PKEY_RSA))
	103	{
	104	if ((a->parameter == NULL) \|\|
	105	(a->parameter->type != V_ASN1_NULL))
	106	{
	107	ASN1_TYPE_free(a->parameter);
	108	a->parameter=ASN1_TYPE_new();
	109	a->parameter->type=V_ASN1_NULL;
	110	}
	111	}
cf1b7d96	112	#ifndef OPENSSL_NO_DSA
4d94ae00	113	else if (pkey->type == EVP_PKEY_DSA)
d02b48c6 RE	114	{
	115	unsigned char *pp;
	116	DSA *dsa;
4d94ae00	117
d02b48c6 RE	118	dsa=pkey->pkey.dsa;
	119	dsa->write_params=0;
	120	ASN1_TYPE_free(a->parameter);
	121	i=i2d_DSAparams(dsa,NULL);
9cdf87f1	122	if ((p=(unsigned char *)OPENSSL_malloc(i)) == NULL) goto err;
d02b48c6 RE	123	pp=p;
	124	i2d_DSAparams(dsa,&pp);
	125	a->parameter=ASN1_TYPE_new();
	126	a->parameter->type=V_ASN1_SEQUENCE;
	127	a->parameter->value.sequence=ASN1_STRING_new();
	128	ASN1_STRING_set(a->parameter->value.sequence,p,i);
26a3a48d	129	OPENSSL_free(p);
d02b48c6	130	}
d02b48c6	131	#endif
4d94ae00 BM	132	#ifndef OPENSSL_NO_ECDSA
	133	else if (pkey->type == EVP_PKEY_ECDSA)
	134	{
b975183c	135	int nid=0;
4d94ae00 BM	136	unsigned char *pp;
	137	ECDSA *ecdsa;
	138
	139	ecdsa = pkey->pkey.ecdsa;
4d94ae00	140	ASN1_TYPE_free(a->parameter);
b975183c	141
4d94ae00 BM	142	if ((a->parameter = ASN1_TYPE_new()) == NULL)
	143	{
	144	X509err(X509_F_X509_PUBKEY_SET, ERR_R_ASN1_LIB);
4d94ae00 BM	145	goto err;
4d94ae00 BM	146	}
b975183c	147
254ef80d	148	if (EC_GROUP_get_asn1_flag(ecdsa->group)
458c2917	149	&& (nid = EC_GROUP_get_nid(ecdsa->group)))
4d94ae00	150	{
b975183c BM	151	/* just set the OID */
	152	a->parameter->type = V_ASN1_OBJECT;
	153	a->parameter->value.object = OBJ_nid2obj(nid);
	154	}
	155	else /* explicit parameters */
	156	{
	157	if ((i = i2d_ECDSAParameters(ecdsa, NULL)) == 0)
	158	{
	159	X509err(X509_F_X509_PUBKEY_SET, ERR_R_ECDSA_LIB);
	160	goto err;
	161	}
	162	if ((p = (unsigned char *) OPENSSL_malloc(i)) == NULL)
	163	{
	164	X509err(X509_F_X509_PUBKEY_SET, ERR_R_MALLOC_FAILURE);
	165	goto err;
	166	}
	167	pp = p;
	168	if (!i2d_ECDSAParameters(ecdsa, &pp))
	169	{
	170	X509err(X509_F_X509_PUBKEY_SET, ERR_R_ECDSA_LIB);
	171	OPENSSL_free(p);
	172	goto err;
	173	}
	174	a->parameter->type = V_ASN1_SEQUENCE;
	175	if ((a->parameter->value.sequence = ASN1_STRING_new()) == NULL)
	176	{
	177	X509err(X509_F_X509_PUBKEY_SET, ERR_R_ASN1_LIB);
	178	OPENSSL_free(p);
	179	goto err;
	180	}
	181	ASN1_STRING_set(a->parameter->value.sequence, p, i);
4d94ae00	182	OPENSSL_free(p);
4d94ae00	183	}
4d94ae00 BM	184	}
	185	#endif
	186	else if (1)
d02b48c6 RE	187	{
	188	X509err(X509_F_X509_PUBKEY_SET,X509_R_UNSUPPORTED_ALGORITHM);
	189	goto err;
	190	}
	191
ad65ce75	192	if ((i=i2d_PublicKey(pkey,NULL)) <= 0) goto err;
9cdf87f1 RL	193	if ((s=(unsigned char *)OPENSSL_malloc(i+1)) == NULL)
	194	{
	195	X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE);
	196	goto err;
	197	}
d02b48c6 RE	198	p=s;
d02b48c6 RE	199	i2d_PublicKey(pkey,&p);
08e9c1af	200	if (!M_ASN1_BIT_STRING_set(pk->public_key,s,i)) goto err;
c35f549e DSH	201	/* Set number of unused bits to zero */
	202	pk->public_key->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT\|0x07);
	203	pk->public_key->flags\|=ASN1_STRING_FLAG_BITS_LEFT;
	204
26a3a48d	205	OPENSSL_free(s);
d02b48c6	206
e77066ea	207	#if 0
d02b48c6 RE	208	CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
d02b48c6 RE	209	pk->pkey=pkey;
e77066ea	210	#endif
d02b48c6 RE	211
	212	if (*x != NULL)
	213	X509_PUBKEY_free(*x);
	214
	215	*x=pk;
	216	pk=NULL;
	217
	218	ok=1;
	219	err:
	220	if (pk != NULL) X509_PUBKEY_free(pk);
	221	return(ok);
	222	}
	223
6b691a5c	224	EVP_PKEY X509_PUBKEY_get(X509_PUBKEY key)
d02b48c6 RE	225	{
	226	EVP_PKEY *ret=NULL;
	227	long j;
	228	int type;
	229	unsigned char *p;
690ecff7	230	#if !defined(OPENSSL_NO_DSA) \|\| !defined(OPENSSL_NO_ECDSA)
b7fe2f96	231	const unsigned char *cp;
d02b48c6	232	X509_ALGOR *a;
58964a49 RE	233	#endif
	234
	235	if (key == NULL) goto err;
	236
cdbb8c2f	237	if (key->pkey != NULL)
4d94ae00 BM	238	{
	239	CRYPTO_add(&key->pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
	240	return(key->pkey);
	241	}
58964a49 RE	242
58964a49 RE	243	if (key->public_key == NULL) goto err;
d02b48c6	244
d02b48c6	245	type=OBJ_obj2nid(key->algor->algorithm);
4d94ae00	246	if ((ret = EVP_PKEY_new()) == NULL)
d02b48c6	247	{
4d94ae00	248	X509err(X509_F_X509_PUBKEY_GET, ERR_R_MALLOC_FAILURE);
d02b48c6 RE	249	goto err;
d02b48c6 RE	250	}
4d94ae00	251	ret->type = EVP_PKEY_type(type);
d02b48c6	252
4d94ae00 BM	253	/* the parameters must be extracted before the public key (ECDSA!) */
4d94ae00 BM	254
690ecff7	255	#if !defined(OPENSSL_NO_DSA) \|\| !defined(OPENSSL_NO_ECDSA)
d02b48c6	256	a=key->algor;
690ecff7	257	#endif
4d94ae00 BM	258
	259	if (0)
	260	;
	261	#ifndef OPENSSL_NO_DSA
	262	else if (ret->type == EVP_PKEY_DSA)
d02b48c6	263	{
c962479b	264	if (a->parameter && (a->parameter->type == V_ASN1_SEQUENCE))
d02b48c6	265	{
4d94ae00 BM	266	if ((ret->pkey.dsa = DSA_new()) == NULL)
	267	{
	268	X509err(X509_F_X509_PUBKEY_GET, ERR_R_MALLOC_FAILURE);
	269	goto err;
	270	}
d02b48c6	271	ret->pkey.dsa->write_params=0;
a4aba800	272	cp=p=a->parameter->value.sequence->data;
d02b48c6	273	j=a->parameter->value.sequence->length;
4d94ae00	274	if (!d2i_DSAparams(&ret->pkey.dsa, &cp, (long)j))
d02b48c6 RE	275	goto err;
	276	}
	277	ret->save_parameters=1;
	278	}
	279	#endif
4d94ae00 BM	280	#ifndef OPENSSL_NO_ECDSA
	281	else if (ret->type == EVP_PKEY_ECDSA)
	282	{
	283	if (a->parameter && (a->parameter->type == V_ASN1_SEQUENCE))
	284	{
b975183c BM	285	/* type == V_ASN1_SEQUENCE => we have explicit parameters
	286	* (e.g. parameters in the X9_62_EC_PARAMETERS-structure )
	287	*/
4d94ae00 BM	288	if ((ret->pkey.ecdsa= ECDSA_new()) == NULL)
	289	{
	290	X509err(X509_F_X509_PUBKEY_GET, ERR_R_MALLOC_FAILURE);
	291	goto err;
	292	}
4d94ae00 BM	293	cp = p = a->parameter->value.sequence->data;
	294	j = a->parameter->value.sequence->length;
	295	if (!d2i_ECDSAParameters(&ret->pkey.ecdsa, &cp, (long)j))
	296	{
	297	X509err(X509_F_X509_PUBKEY_GET, ERR_R_ECDSA_LIB);
	298	goto err;
	299	}
	300	}
b975183c BM	301	else if (a->parameter && (a->parameter->type == V_ASN1_OBJECT))
	302	{
	303	/* type == V_ASN1_OBJECT => the parameters are given
	304	* by an asn1 OID
	305	*/
458c2917	306	ECDSA *ecdsa;
b975183c BM	307	if (ret->pkey.ecdsa == NULL)
b975183c BM	308	ret->pkey.ecdsa = ECDSA_new();
458c2917 BM	309	ecdsa = ret->pkey.ecdsa;
	310	if (ecdsa->group)
	311	EC_GROUP_free(ecdsa->group);
	312	if ((ecdsa->group = EC_GROUP_new_by_name(
	313	OBJ_obj2nid(a->parameter->value.object))) == NULL)
b975183c	314	goto err;
254ef80d BM	315	EC_GROUP_set_asn1_flag(ecdsa->group,
254ef80d BM	316	OPENSSL_EC_NAMED_CURVE);
b975183c BM	317	}
b975183c BM	318	/* the case implicitlyCA is currently not implemented */
4d94ae00 BM	319	ret->save_parameters = 1;
	320	}
	321	#endif
	322
	323	p=key->public_key->data;
	324	j=key->public_key->length;
	325	if ((ret = d2i_PublicKey(type, &ret, &p, (long)j)) == NULL)
	326	{
	327	X509err(X509_F_X509_PUBKEY_GET, X509_R_ERR_ASN1_LIB);
	328	goto err;
	329	}
	330
	331	key->pkey = ret;
	332	CRYPTO_add(&ret->references, 1, CRYPTO_LOCK_EVP_PKEY);
d02b48c6 RE	333	return(ret);
	334	err:
	335	if (ret != NULL)
	336	EVP_PKEY_free(ret);
	337	return(NULL);
	338	}
	339
52664f50 DSH	340	/* Now two pseudo ASN1 routines that take an EVP_PKEY structure
	341	* and encode or decode as X509_PUBKEY
	342	*/
	343
	344	EVP_PKEY d2i_PUBKEY(EVP_PKEY a, unsigned char *pp,
	345	long length)
4d94ae00	346	{
52664f50 DSH	347	X509_PUBKEY *xpk;
	348	EVP_PKEY *pktmp;
	349	xpk = d2i_X509_PUBKEY(NULL, pp, length);
	350	if(!xpk) return NULL;
	351	pktmp = X509_PUBKEY_get(xpk);
	352	X509_PUBKEY_free(xpk);
	353	if(!pktmp) return NULL;
4d94ae00 BM	354	if(a)
4d94ae00 BM	355	{
52664f50 DSH	356	EVP_PKEY_free(*a);
52664f50 DSH	357	*a = pktmp;
4d94ae00	358	}
52664f50	359	return pktmp;
4d94ae00	360	}
52664f50 DSH	361
52664f50 DSH	362	int i2d_PUBKEY(EVP_PKEY a, unsigned char *pp)
4d94ae00	363	{
52664f50 DSH	364	X509_PUBKEY *xpk=NULL;
	365	int ret;
	366	if(!a) return 0;
	367	if(!X509_PUBKEY_set(&xpk, a)) return 0;
	368	ret = i2d_X509_PUBKEY(xpk, pp);
	369	X509_PUBKEY_free(xpk);
	370	return ret;
4d94ae00	371	}
52664f50 DSH	372
	373	/* The following are equivalents but which return RSA and DSA
	374	* keys
	375	*/
cf1b7d96	376	#ifndef OPENSSL_NO_RSA
52664f50 DSH	377	RSA d2i_RSA_PUBKEY(RSA a, unsigned char *pp,
52664f50 DSH	378	long length)
4d94ae00	379	{
52664f50 DSH	380	EVP_PKEY *pkey;
	381	RSA *key;
	382	unsigned char *q;
	383	q = *pp;
	384	pkey = d2i_PUBKEY(NULL, &q, length);
4d94ae00	385	if (!pkey) return NULL;
c7cb16a8	386	key = EVP_PKEY_get1_RSA(pkey);
52664f50	387	EVP_PKEY_free(pkey);
4d94ae00	388	if (!key) return NULL;
52664f50	389	*pp = q;
4d94ae00 BM	390	if (a)
4d94ae00 BM	391	{
52664f50 DSH	392	RSA_free(*a);
52664f50 DSH	393	*a = key;
4d94ae00	394	}
52664f50	395	return key;
4d94ae00	396	}
52664f50 DSH	397
52664f50 DSH	398	int i2d_RSA_PUBKEY(RSA a, unsigned char *pp)
4d94ae00	399	{
52664f50 DSH	400	EVP_PKEY *pktmp;
52664f50 DSH	401	int ret;
4d94ae00	402	if (!a) return 0;
52664f50	403	pktmp = EVP_PKEY_new();
4d94ae00 BM	404	if (!pktmp)
4d94ae00 BM	405	{
52664f50 DSH	406	ASN1err(ASN1_F_I2D_RSA_PUBKEY, ERR_R_MALLOC_FAILURE);
52664f50 DSH	407	return 0;
4d94ae00	408	}
c7cb16a8	409	EVP_PKEY_set1_RSA(pktmp, a);
52664f50 DSH	410	ret = i2d_PUBKEY(pktmp, pp);
	411	EVP_PKEY_free(pktmp);
	412	return ret;
4d94ae00	413	}
12aefe78	414	#endif
52664f50	415
cf1b7d96	416	#ifndef OPENSSL_NO_DSA
52664f50 DSH	417	DSA d2i_DSA_PUBKEY(DSA a, unsigned char *pp,
52664f50 DSH	418	long length)
4d94ae00	419	{
52664f50 DSH	420	EVP_PKEY *pkey;
	421	DSA *key;
	422	unsigned char *q;
	423	q = *pp;
	424	pkey = d2i_PUBKEY(NULL, &q, length);
4d94ae00	425	if (!pkey) return NULL;
c7cb16a8	426	key = EVP_PKEY_get1_DSA(pkey);
52664f50	427	EVP_PKEY_free(pkey);
4d94ae00	428	if (!key) return NULL;
52664f50	429	*pp = q;
4d94ae00 BM	430	if (a)
4d94ae00 BM	431	{
52664f50 DSH	432	DSA_free(*a);
52664f50 DSH	433	*a = key;
4d94ae00	434	}
52664f50	435	return key;
4d94ae00	436	}
52664f50 DSH	437
52664f50 DSH	438	int i2d_DSA_PUBKEY(DSA a, unsigned char *pp)
4d94ae00	439	{
52664f50 DSH	440	EVP_PKEY *pktmp;
	441	int ret;
	442	if(!a) return 0;
	443	pktmp = EVP_PKEY_new();
4d94ae00 BM	444	if(!pktmp)
4d94ae00 BM	445	{
52664f50 DSH	446	ASN1err(ASN1_F_I2D_DSA_PUBKEY, ERR_R_MALLOC_FAILURE);
52664f50 DSH	447	return 0;
4d94ae00	448	}
c7cb16a8	449	EVP_PKEY_set1_DSA(pktmp, a);
52664f50 DSH	450	ret = i2d_PUBKEY(pktmp, pp);
	451	EVP_PKEY_free(pktmp);
	452	return ret;
4d94ae00 BM	453	}
	454	#endif
	455
	456	#ifndef OPENSSL_NO_ECDSA
	457	ECDSA d2i_ECDSA_PUBKEY(ECDSA a, unsigned char *pp, long length)
	458	{
	459	EVP_PKEY *pkey;
	460	ECDSA *key;
	461	unsigned char *q;
	462	q = *pp;
	463	pkey = d2i_PUBKEY(NULL, &q, length);
	464	if (!pkey) return(NULL);
	465	key = EVP_PKEY_get1_ECDSA(pkey);
	466	EVP_PKEY_free(pkey);
	467	if (!key) return(NULL);
	468	*pp = q;
	469	if (a)
	470	{
	471	ECDSA_free(*a);
	472	*a = key;
	473	}
	474	return(key);
	475	}
	476
	477	int i2d_ECDSA_PUBKEY(ECDSA a, unsigned char *pp)
	478	{
	479	EVP_PKEY *pktmp;
	480	int ret;
	481	if (!a) return(0);
	482	if ((pktmp = EVP_PKEY_new()) == NULL)
	483	{
	484	ASN1err(ASN1_F_I2D_ECDSA_PUBKEY, ERR_R_MALLOC_FAILURE);
	485	return(0);
	486	}
	487	EVP_PKEY_set1_ECDSA(pktmp, a);
	488	ret = i2d_PUBKEY(pktmp, pp);
	489	EVP_PKEY_free(pktmp);
	490	return(ret);
	491	}
12aefe78	492	#endif