[thirdparty/openssl.git] / crypto / evp / p_lib.c

/* crypto/evp/p_lib.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 "objects.h"
#include "evp.h"
#include "asn1_mac.h"
#include "x509.h"

/* EVPerr(EVP_F_D2I_PKEY,EVP_R_UNSUPPORTED_CIPHER); */
/* EVPerr(EVP_F_D2I_PKEY,EVP_R_IV_TOO_LARGE); */

#ifndef NOPROTO
static void EVP_PKEY_free_it(EVP_PKEY *x);
#else
static void EVP_PKEY_free_it();
#endif

int EVP_PKEY_bits(EVP_PKEY *pkey)
	{
#ifndef NO_RSA
	if (pkey->type == EVP_PKEY_RSA)
		return(BN_num_bits(pkey->pkey.rsa->n));
	else
#endif
#ifndef NO_DSA
		if (pkey->type == EVP_PKEY_DSA)
		return(BN_num_bits(pkey->pkey.dsa->p));
#endif
	return(0);
	}

int EVP_PKEY_size(EVP_PKEY *pkey)
	{
	if (pkey == NULL)
		return(0);
#ifndef NO_RSA
	if (pkey->type == EVP_PKEY_RSA)
		return(RSA_size(pkey->pkey.rsa));
	else
#endif
#ifndef NO_DSA
		if (pkey->type == EVP_PKEY_DSA)
		return(DSA_size(pkey->pkey.dsa));
#endif
	return(0);
	}

int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode)
	{
#ifndef NO_DSA
	if (pkey->type == EVP_PKEY_DSA)
		{
		int ret=pkey->save_parameters=mode;

		if (mode >= 0)
			pkey->save_parameters=mode;
		return(ret);
		}
#endif
	return(0);
	}

int EVP_PKEY_copy_parameters(EVP_PKEY *to, EVP_PKEY *from)
	{
	if (to->type != from->type)
		{
		EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_DIFFERENT_KEY_TYPES);
		goto err;
		}

	if (EVP_PKEY_missing_parameters(from))
		{
		EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_MISSING_PARMATERS);
		goto err;
		}
#ifndef NO_DSA
	if (to->type == EVP_PKEY_DSA)
		{
		BIGNUM *a;

		if ((a=BN_dup(from->pkey.dsa->p)) == NULL) goto err;
		if (to->pkey.dsa->p != NULL) BN_free(to->pkey.dsa->p);
		to->pkey.dsa->p=a;

		if ((a=BN_dup(from->pkey.dsa->q)) == NULL) goto err;
		if (to->pkey.dsa->q != NULL) BN_free(to->pkey.dsa->q);
		to->pkey.dsa->q=a;

		if ((a=BN_dup(from->pkey.dsa->g)) == NULL) goto err;
		if (to->pkey.dsa->g != NULL) BN_free(to->pkey.dsa->g);
		to->pkey.dsa->g=a;
		}
#endif
	return(1);
err:
	return(0);
	}

int EVP_PKEY_missing_parameters(EVP_PKEY *pkey)
	{
#ifndef NO_DSA
	if (pkey->type == EVP_PKEY_DSA)
		{
		DSA *dsa;

		dsa=pkey->pkey.dsa;
		if ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL))
			return(1);
		}
#endif
	return(0);
	}

int EVP_PKEY_cmp_parameters(EVP_PKEY *a, EVP_PKEY *b)
	{
#ifndef NO_DSA
	if ((a->type == EVP_PKEY_DSA) && (b->type == EVP_PKEY_DSA))
		{
		if (	BN_cmp(a->pkey.dsa->p,b->pkey.dsa->p) ||
			BN_cmp(a->pkey.dsa->q,b->pkey.dsa->q) ||
			BN_cmp(a->pkey.dsa->g,b->pkey.dsa->g))
			return(0);
		else
			return(1);
		}
#endif
	return(-1);
	}

EVP_PKEY *EVP_PKEY_new(void)
	{
	EVP_PKEY *ret;

	ret=(EVP_PKEY *)Malloc(sizeof(EVP_PKEY));
	if (ret == NULL)
		{
		EVPerr(EVP_F_EVP_PKEY_NEW,ERR_R_MALLOC_FAILURE);
		return(NULL);
		}
	ret->type=EVP_PKEY_NONE;
	ret->references=1;
	ret->pkey.ptr=NULL;
	ret->attributes=NULL;
	ret->save_parameters=1;
	return(ret);
	}

int EVP_PKEY_assign(EVP_PKEY *pkey, int type, char *key)
	{
	if (pkey == NULL) return(0);
	if (pkey->pkey.ptr != NULL)
		EVP_PKEY_free_it(pkey);
	pkey->type=EVP_PKEY_type(type);
	pkey->save_type=type;
	pkey->pkey.ptr=key;
	return(1);
	}

int EVP_PKEY_type(int type)
	{
	switch (type)
		{
	case EVP_PKEY_RSA:
	case EVP_PKEY_RSA2:
		return(EVP_PKEY_RSA);
	case EVP_PKEY_DSA:
	case EVP_PKEY_DSA1:
	case EVP_PKEY_DSA2:
	case EVP_PKEY_DSA3:
	case EVP_PKEY_DSA4:
		return(EVP_PKEY_DSA);
	case EVP_PKEY_DH:
		return(EVP_PKEY_DH);
	default:
		return(NID_undef);
		}
	}

void EVP_PKEY_free(EVP_PKEY *x)
	{
	int i;

	if (x == NULL) return;

	i=CRYPTO_add(&x->references,-1,CRYPTO_LOCK_EVP_PKEY);
#ifdef REF_PRINT
	REF_PRINT("EVP_PKEY",x);
#endif
	if (i > 0) return;
#ifdef REF_CHECK
	if (i < 0)
		{
		fprintf(stderr,"EVP_PKEY_free, bad reference count\n");
		abort();
		}
#endif
	EVP_PKEY_free_it(x);
	Free((char *)x);
	}

static void EVP_PKEY_free_it(EVP_PKEY *x)
	{
	switch (x->type)
		{
#ifndef NO_RSA
	case EVP_PKEY_RSA:
	case EVP_PKEY_RSA2:
		RSA_free(x->pkey.rsa);
		break;
#endif
#ifndef NO_DSA
	case EVP_PKEY_DSA:
	case EVP_PKEY_DSA2:
	case EVP_PKEY_DSA3:
	case EVP_PKEY_DSA4:
		DSA_free(x->pkey.dsa);
		break;
#endif
#ifndef NO_DH
	case EVP_PKEY_DH:
		DH_free(x->pkey.dh);
		break;
#endif
		}
	}
Commit	Line	Data
d02b48c6	1	/* crypto/evp/p_lib.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"
	61	#include "objects.h"
	62	#include "evp.h"
	63	#include "asn1_mac.h"
	64	#include "x509.h"
	65
	66	/* EVPerr(EVP_F_D2I_PKEY,EVP_R_UNSUPPORTED_CIPHER); */
67	/* EVPerr(EVP_F_D2I_PKEY,EVP_R_IV_TOO_LARGE); */
68
69	#ifndef NOPROTO
70	static void EVP_PKEY_free_it(EVP_PKEY *x);
71	#else
72	static void EVP_PKEY_free_it();
73	#endif
74
6b691a5c	75	int EVP_PKEY_bits(EVP_PKEY *pkey)
58964a49 RE	76	{
	77	#ifndef NO_RSA
	78	if (pkey->type == EVP_PKEY_RSA)
	79	return(BN_num_bits(pkey->pkey.rsa->n));
	80	else
	81	#endif
	82	#ifndef NO_DSA
	83	if (pkey->type == EVP_PKEY_DSA)
	84	return(BN_num_bits(pkey->pkey.dsa->p));
	85	#endif
	86	return(0);
	87	}
	88
6b691a5c	89	int EVP_PKEY_size(EVP_PKEY *pkey)
d02b48c6	90	{
dfeab068 RE	91	if (pkey == NULL)
dfeab068 RE	92	return(0);
d02b48c6 RE	93	#ifndef NO_RSA
	94	if (pkey->type == EVP_PKEY_RSA)
	95	return(RSA_size(pkey->pkey.rsa));
	96	else
	97	#endif
	98	#ifndef NO_DSA
	99	if (pkey->type == EVP_PKEY_DSA)
	100	return(DSA_size(pkey->pkey.dsa));
	101	#endif
	102	return(0);
	103	}
	104
6b691a5c	105	int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode)
d02b48c6 RE	106	{
	107	#ifndef NO_DSA
	108	if (pkey->type == EVP_PKEY_DSA)
	109	{
	110	int ret=pkey->save_parameters=mode;
	111
	112	if (mode >= 0)
	113	pkey->save_parameters=mode;
	114	return(ret);
	115	}
	116	#endif
	117	return(0);
	118	}
	119
6b691a5c	120	int EVP_PKEY_copy_parameters(EVP_PKEY to, EVP_PKEY from)
d02b48c6 RE	121	{
	122	if (to->type != from->type)
	123	{
	124	EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_DIFFERENT_KEY_TYPES);
58964a49	125	goto err;
d02b48c6 RE	126	}
	127
	128	if (EVP_PKEY_missing_parameters(from))
	129	{
	130	EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_MISSING_PARMATERS);
58964a49	131	goto err;
d02b48c6 RE	132	}
	133	#ifndef NO_DSA
	134	if (to->type == EVP_PKEY_DSA)
	135	{
	136	BIGNUM *a;
	137
	138	if ((a=BN_dup(from->pkey.dsa->p)) == NULL) goto err;
	139	if (to->pkey.dsa->p != NULL) BN_free(to->pkey.dsa->p);
	140	to->pkey.dsa->p=a;
	141
	142	if ((a=BN_dup(from->pkey.dsa->q)) == NULL) goto err;
	143	if (to->pkey.dsa->q != NULL) BN_free(to->pkey.dsa->q);
	144	to->pkey.dsa->q=a;
	145
	146	if ((a=BN_dup(from->pkey.dsa->g)) == NULL) goto err;
	147	if (to->pkey.dsa->g != NULL) BN_free(to->pkey.dsa->g);
	148	to->pkey.dsa->g=a;
	149	}
	150	#endif
	151	return(1);
	152	err:
	153	return(0);
	154	}
	155
6b691a5c	156	int EVP_PKEY_missing_parameters(EVP_PKEY *pkey)
d02b48c6 RE	157	{
	158	#ifndef NO_DSA
	159	if (pkey->type == EVP_PKEY_DSA)
	160	{
	161	DSA *dsa;
	162
	163	dsa=pkey->pkey.dsa;
	164	if ((dsa->p == NULL) \|\| (dsa->q == NULL) \|\| (dsa->g == NULL))
	165	return(1);
	166	}
	167	#endif
	168	return(0);
	169	}
	170
6b691a5c	171	int EVP_PKEY_cmp_parameters(EVP_PKEY a, EVP_PKEY b)
58964a49 RE	172	{
	173	#ifndef NO_DSA
	174	if ((a->type == EVP_PKEY_DSA) && (b->type == EVP_PKEY_DSA))
	175	{
	176	if ( BN_cmp(a->pkey.dsa->p,b->pkey.dsa->p) \|\|
	177	BN_cmp(a->pkey.dsa->q,b->pkey.dsa->q) \|\|
	178	BN_cmp(a->pkey.dsa->g,b->pkey.dsa->g))
	179	return(0);
	180	else
	181	return(1);
	182	}
	183	#endif
	184	return(-1);
	185	}
	186
6b691a5c	187	EVP_PKEY *EVP_PKEY_new(void)
d02b48c6 RE	188	{
	189	EVP_PKEY *ret;
	190
	191	ret=(EVP_PKEY *)Malloc(sizeof(EVP_PKEY));
	192	if (ret == NULL)
	193	{
	194	EVPerr(EVP_F_EVP_PKEY_NEW,ERR_R_MALLOC_FAILURE);
	195	return(NULL);
	196	}
	197	ret->type=EVP_PKEY_NONE;
	198	ret->references=1;
	199	ret->pkey.ptr=NULL;
	200	ret->attributes=NULL;
	201	ret->save_parameters=1;
	202	return(ret);
	203	}
	204
6b691a5c	205	int EVP_PKEY_assign(EVP_PKEY pkey, int type, char key)
d02b48c6 RE	206	{
	207	if (pkey == NULL) return(0);
	208	if (pkey->pkey.ptr != NULL)
	209	EVP_PKEY_free_it(pkey);
	210	pkey->type=EVP_PKEY_type(type);
	211	pkey->save_type=type;
	212	pkey->pkey.ptr=key;
	213	return(1);
	214	}
	215
6b691a5c	216	int EVP_PKEY_type(int type)
d02b48c6 RE	217	{
	218	switch (type)
	219	{
	220	case EVP_PKEY_RSA:
	221	case EVP_PKEY_RSA2:
	222	return(EVP_PKEY_RSA);
	223	case EVP_PKEY_DSA:
58964a49	224	case EVP_PKEY_DSA1:
d02b48c6 RE	225	case EVP_PKEY_DSA2:
d02b48c6 RE	226	case EVP_PKEY_DSA3:
58964a49	227	case EVP_PKEY_DSA4:
d02b48c6 RE	228	return(EVP_PKEY_DSA);
	229	case EVP_PKEY_DH:
	230	return(EVP_PKEY_DH);
	231	default:
	232	return(NID_undef);
	233	}
	234	}
	235
6b691a5c	236	void EVP_PKEY_free(EVP_PKEY *x)
d02b48c6 RE	237	{
	238	int i;
	239
	240	if (x == NULL) return;
	241
	242	i=CRYPTO_add(&x->references,-1,CRYPTO_LOCK_EVP_PKEY);
58964a49 RE	243	#ifdef REF_PRINT
	244	REF_PRINT("EVP_PKEY",x);
	245	#endif
d02b48c6 RE	246	if (i > 0) return;
	247	#ifdef REF_CHECK
	248	if (i < 0)
	249	{
	250	fprintf(stderr,"EVP_PKEY_free, bad reference count\n");
	251	abort();
	252	}
	253	#endif
	254	EVP_PKEY_free_it(x);
	255	Free((char *)x);
	256	}
	257
6b691a5c	258	static void EVP_PKEY_free_it(EVP_PKEY *x)
d02b48c6 RE	259	{
	260	switch (x->type)
	261	{
	262	#ifndef NO_RSA
	263	case EVP_PKEY_RSA:
	264	case EVP_PKEY_RSA2:
	265	RSA_free(x->pkey.rsa);
	266	break;
	267	#endif
	268	#ifndef NO_DSA
	269	case EVP_PKEY_DSA:
	270	case EVP_PKEY_DSA2:
	271	case EVP_PKEY_DSA3:
58964a49	272	case EVP_PKEY_DSA4:
d02b48c6 RE	273	DSA_free(x->pkey.dsa);
	274	break;
	275	#endif
	276	#ifndef NO_DH
	277	case EVP_PKEY_DH:
	278	DH_free(x->pkey.dh);
	279	break;
	280	#endif
	281	}
	282	}
	283