[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/asn1_mac.h>
#include <openssl/x509.h>

int i2d_X509_PUBKEY(X509_PUBKEY *a, unsigned char **pp)
	{
	M_ASN1_I2D_vars(a);

	M_ASN1_I2D_len(a->algor,	i2d_X509_ALGOR);
	M_ASN1_I2D_len(a->public_key,	i2d_ASN1_BIT_STRING);

	M_ASN1_I2D_seq_total();

	M_ASN1_I2D_put(a->algor,	i2d_X509_ALGOR);
	M_ASN1_I2D_put(a->public_key,	i2d_ASN1_BIT_STRING);

	M_ASN1_I2D_finish();
	}

X509_PUBKEY *d2i_X509_PUBKEY(X509_PUBKEY **a, unsigned char **pp,
	     long length)
	{
	M_ASN1_D2I_vars(a,X509_PUBKEY *,X509_PUBKEY_new);

	M_ASN1_D2I_Init();
	M_ASN1_D2I_start_sequence();
	M_ASN1_D2I_get(ret->algor,d2i_X509_ALGOR);
	M_ASN1_D2I_get(ret->public_key,d2i_ASN1_BIT_STRING);
	if (ret->pkey != NULL)
		{
		EVP_PKEY_free(ret->pkey);
		ret->pkey=NULL;
		}
	M_ASN1_D2I_Finish(a,X509_PUBKEY_free,ASN1_F_D2I_X509_PUBKEY);
	}

X509_PUBKEY *X509_PUBKEY_new(void)
	{
	X509_PUBKEY *ret=NULL;
	ASN1_CTX c;

	M_ASN1_New_Malloc(ret,X509_PUBKEY);
	M_ASN1_New(ret->algor,X509_ALGOR_new);
	M_ASN1_New(ret->public_key,M_ASN1_BIT_STRING_new);
	ret->pkey=NULL;
	return(ret);
	M_ASN1_New_Error(ASN1_F_X509_PUBKEY_NEW);
	}

void X509_PUBKEY_free(X509_PUBKEY *a)
	{
	if (a == NULL) return;
	X509_ALGOR_free(a->algor);
	M_ASN1_BIT_STRING_free(a->public_key);
	if (a->pkey != NULL) EVP_PKEY_free(a->pkey);
	Free((char *)a);
	}

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;
	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;
			}
		}
	else
#ifndef NO_DSA
		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);
		p=(unsigned char *)Malloc(i);
		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);
		Free(p);
		}
	else
#endif
		{
		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 *)Malloc(i+1)) == NULL) 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;

	Free(s);

	CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
	pk->pkey=pkey;

	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;
#ifndef NO_DSA
	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);
	p=key->public_key->data;
        j=key->public_key->length;
        if ((ret=d2i_PublicKey(type,NULL,&p,(long)j)) == NULL)
		{
		X509err(X509_F_X509_PUBKEY_GET,X509_R_ERR_ASN1_LIB);
		goto err;
		}
	ret->save_parameters=0;

#ifndef NO_DSA
	a=key->algor;
	if (ret->type == EVP_PKEY_DSA)
		{
		if (a->parameter->type == V_ASN1_SEQUENCE)
			{
			ret->pkey.dsa->write_params=0;
			p=a->parameter->value.sequence->data;
			j=a->parameter->value.sequence->length;
			if (!d2i_DSAparams(&ret->pkey.dsa,&p,(long)j))
				goto err;
			}
		ret->save_parameters=1;
		}
#endif
	key->pkey=ret;
	CRYPTO_add(&ret->references,1,CRYPTO_LOCK_EVP_PKEY);
	return(ret);
err:
	if (ret != NULL)
		EVP_PKEY_free(ret);
	return(NULL);
	}
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"
ec577822	61	#include <openssl/asn1_mac.h>
f0e8ae72	62	#include <openssl/x509.h>
d02b48c6	63
6b691a5c	64	int i2d_X509_PUBKEY(X509_PUBKEY a, unsigned char *pp)
d02b48c6 RE	65	{
	66	M_ASN1_I2D_vars(a);
	67
	68	M_ASN1_I2D_len(a->algor, i2d_X509_ALGOR);
	69	M_ASN1_I2D_len(a->public_key, i2d_ASN1_BIT_STRING);
	70
	71	M_ASN1_I2D_seq_total();
	72
	73	M_ASN1_I2D_put(a->algor, i2d_X509_ALGOR);
	74	M_ASN1_I2D_put(a->public_key, i2d_ASN1_BIT_STRING);
	75
	76	M_ASN1_I2D_finish();
	77	}
	78
6b691a5c UM	79	X509_PUBKEY d2i_X509_PUBKEY(X509_PUBKEY a, unsigned char *pp,
6b691a5c UM	80	long length)
d02b48c6 RE	81	{
	82	M_ASN1_D2I_vars(a,X509_PUBKEY *,X509_PUBKEY_new);
	83
	84	M_ASN1_D2I_Init();
	85	M_ASN1_D2I_start_sequence();
	86	M_ASN1_D2I_get(ret->algor,d2i_X509_ALGOR);
	87	M_ASN1_D2I_get(ret->public_key,d2i_ASN1_BIT_STRING);
	88	if (ret->pkey != NULL)
	89	{
	90	EVP_PKEY_free(ret->pkey);
	91	ret->pkey=NULL;
	92	}
	93	M_ASN1_D2I_Finish(a,X509_PUBKEY_free,ASN1_F_D2I_X509_PUBKEY);
	94	}
	95
6b691a5c	96	X509_PUBKEY *X509_PUBKEY_new(void)
d02b48c6 RE	97	{
d02b48c6 RE	98	X509_PUBKEY *ret=NULL;
dfeab068	99	ASN1_CTX c;
d02b48c6 RE	100
	101	M_ASN1_New_Malloc(ret,X509_PUBKEY);
	102	M_ASN1_New(ret->algor,X509_ALGOR_new);
08e9c1af	103	M_ASN1_New(ret->public_key,M_ASN1_BIT_STRING_new);
d02b48c6 RE	104	ret->pkey=NULL;
	105	return(ret);
	106	M_ASN1_New_Error(ASN1_F_X509_PUBKEY_NEW);
	107	}
	108
6b691a5c	109	void X509_PUBKEY_free(X509_PUBKEY *a)
d02b48c6 RE	110	{
	111	if (a == NULL) return;
	112	X509_ALGOR_free(a->algor);
08e9c1af	113	M_ASN1_BIT_STRING_free(a->public_key);
d02b48c6 RE	114	if (a->pkey != NULL) EVP_PKEY_free(a->pkey);
	115	Free((char *)a);
	116	}
	117
6b691a5c	118	int X509_PUBKEY_set(X509_PUBKEY *x, EVP_PKEY pkey)
d02b48c6 RE	119	{
	120	int ok=0;
	121	X509_PUBKEY *pk;
	122	X509_ALGOR *a;
	123	ASN1_OBJECT *o;
	124	unsigned char s,p;
	125	int i;
	126
	127	if (x == NULL) return(0);
	128
	129	if ((pk=X509_PUBKEY_new()) == NULL) goto err;
	130	a=pk->algor;
	131
	132	/* set the algorithm id */
	133	if ((o=OBJ_nid2obj(pkey->type)) == NULL) goto err;
	134	ASN1_OBJECT_free(a->algorithm);
	135	a->algorithm=o;
	136
	137	/* Set the parameter list */
	138	if (!pkey->save_parameters \|\| (pkey->type == EVP_PKEY_RSA))
	139	{
	140	if ((a->parameter == NULL) \|\|
	141	(a->parameter->type != V_ASN1_NULL))
	142	{
	143	ASN1_TYPE_free(a->parameter);
	144	a->parameter=ASN1_TYPE_new();
	145	a->parameter->type=V_ASN1_NULL;
	146	}
	147	}
	148	else
	149	#ifndef NO_DSA
	150	if (pkey->type == EVP_PKEY_DSA)
	151	{
	152	unsigned char *pp;
	153	DSA *dsa;
	154
	155	dsa=pkey->pkey.dsa;
	156	dsa->write_params=0;
	157	ASN1_TYPE_free(a->parameter);
	158	i=i2d_DSAparams(dsa,NULL);
	159	p=(unsigned char *)Malloc(i);
	160	pp=p;
	161	i2d_DSAparams(dsa,&pp);
	162	a->parameter=ASN1_TYPE_new();
	163	a->parameter->type=V_ASN1_SEQUENCE;
	164	a->parameter->value.sequence=ASN1_STRING_new();
	165	ASN1_STRING_set(a->parameter->value.sequence,p,i);
	166	Free(p);
	167	}
	168	else
	169	#endif
	170	{
	171	X509err(X509_F_X509_PUBKEY_SET,X509_R_UNSUPPORTED_ALGORITHM);
	172	goto err;
	173	}
	174
ad65ce75	175	if ((i=i2d_PublicKey(pkey,NULL)) <= 0) goto err;
d02b48c6 RE	176	if ((s=(unsigned char *)Malloc(i+1)) == NULL) goto err;
	177	p=s;
	178	i2d_PublicKey(pkey,&p);
08e9c1af	179	if (!M_ASN1_BIT_STRING_set(pk->public_key,s,i)) goto err;
c35f549e DSH	180	/* Set number of unused bits to zero */
	181	pk->public_key->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT\|0x07);
	182	pk->public_key->flags\|=ASN1_STRING_FLAG_BITS_LEFT;
	183
d02b48c6 RE	184	Free(s);
	185
	186	CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
	187	pk->pkey=pkey;
	188
	189	if (*x != NULL)
	190	X509_PUBKEY_free(*x);
	191
	192	*x=pk;
	193	pk=NULL;
	194
	195	ok=1;
	196	err:
	197	if (pk != NULL) X509_PUBKEY_free(pk);
	198	return(ok);
	199	}
	200
6b691a5c	201	EVP_PKEY X509_PUBKEY_get(X509_PUBKEY key)
d02b48c6 RE	202	{
	203	EVP_PKEY *ret=NULL;
	204	long j;
	205	int type;
	206	unsigned char *p;
58964a49	207	#ifndef NO_DSA
d02b48c6	208	X509_ALGOR *a;
58964a49 RE	209	#endif
	210
	211	if (key == NULL) goto err;
	212
cdbb8c2f BL	213	if (key->pkey != NULL)
	214	{
	215	CRYPTO_add(&key->pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
	216	return(key->pkey);
	217	}
58964a49 RE	218
58964a49 RE	219	if (key->public_key == NULL) goto err;
d02b48c6	220
d02b48c6 RE	221	type=OBJ_obj2nid(key->algor->algorithm);
	222	p=key->public_key->data;
	223	j=key->public_key->length;
	224	if ((ret=d2i_PublicKey(type,NULL,&p,(long)j)) == NULL)
	225	{
	226	X509err(X509_F_X509_PUBKEY_GET,X509_R_ERR_ASN1_LIB);
	227	goto err;
	228	}
	229	ret->save_parameters=0;
	230
	231	#ifndef NO_DSA
	232	a=key->algor;
	233	if (ret->type == EVP_PKEY_DSA)
	234	{
	235	if (a->parameter->type == V_ASN1_SEQUENCE)
	236	{
	237	ret->pkey.dsa->write_params=0;
	238	p=a->parameter->value.sequence->data;
	239	j=a->parameter->value.sequence->length;
	240	if (!d2i_DSAparams(&ret->pkey.dsa,&p,(long)j))
	241	goto err;
	242	}
	243	ret->save_parameters=1;
	244	}
	245	#endif
	246	key->pkey=ret;
cdbb8c2f	247	CRYPTO_add(&ret->references,1,CRYPTO_LOCK_EVP_PKEY);
d02b48c6 RE	248	return(ret);
	249	err:
	250	if (ret != NULL)
	251	EVP_PKEY_free(ret);
	252	return(NULL);
	253	}
	254