[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(pkey)
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(pkey)
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(pkey,mode)
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(to,from)
EVP_PKEY *to,*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(pkey)
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(a,b)
EVP_PKEY *a,*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()
	{
	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(pkey,type,key)
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(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(x)
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(x)
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
58964a49 RE	75	int EVP_PKEY_bits(pkey)
	76	EVP_PKEY *pkey;
	77	{
	78	#ifndef NO_RSA
	79	if (pkey->type == EVP_PKEY_RSA)
	80	return(BN_num_bits(pkey->pkey.rsa->n));
	81	else
	82	#endif
	83	#ifndef NO_DSA
	84	if (pkey->type == EVP_PKEY_DSA)
	85	return(BN_num_bits(pkey->pkey.dsa->p));
	86	#endif
	87	return(0);
	88	}
	89
d02b48c6 RE	90	int EVP_PKEY_size(pkey)
	91	EVP_PKEY *pkey;
	92	{
dfeab068 RE	93	if (pkey == NULL)
dfeab068 RE	94	return(0);
d02b48c6 RE	95	#ifndef NO_RSA
	96	if (pkey->type == EVP_PKEY_RSA)
	97	return(RSA_size(pkey->pkey.rsa));
	98	else
	99	#endif
	100	#ifndef NO_DSA
	101	if (pkey->type == EVP_PKEY_DSA)
	102	return(DSA_size(pkey->pkey.dsa));
	103	#endif
	104	return(0);
	105	}
	106
	107	int EVP_PKEY_save_parameters(pkey,mode)
	108	EVP_PKEY *pkey;
	109	int mode;
	110	{
	111	#ifndef NO_DSA
	112	if (pkey->type == EVP_PKEY_DSA)
	113	{
	114	int ret=pkey->save_parameters=mode;
	115
	116	if (mode >= 0)
	117	pkey->save_parameters=mode;
	118	return(ret);
	119	}
	120	#endif
	121	return(0);
	122	}
	123
	124	int EVP_PKEY_copy_parameters(to,from)
	125	EVP_PKEY to,from;
	126	{
	127	if (to->type != from->type)
	128	{
	129	EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_DIFFERENT_KEY_TYPES);
58964a49	130	goto err;
d02b48c6 RE	131	}
	132
	133	if (EVP_PKEY_missing_parameters(from))
	134	{
	135	EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_MISSING_PARMATERS);
58964a49	136	goto err;
d02b48c6 RE	137	}
	138	#ifndef NO_DSA
	139	if (to->type == EVP_PKEY_DSA)
	140	{
	141	BIGNUM *a;
	142
	143	if ((a=BN_dup(from->pkey.dsa->p)) == NULL) goto err;
	144	if (to->pkey.dsa->p != NULL) BN_free(to->pkey.dsa->p);
	145	to->pkey.dsa->p=a;
	146
	147	if ((a=BN_dup(from->pkey.dsa->q)) == NULL) goto err;
	148	if (to->pkey.dsa->q != NULL) BN_free(to->pkey.dsa->q);
	149	to->pkey.dsa->q=a;
	150
	151	if ((a=BN_dup(from->pkey.dsa->g)) == NULL) goto err;
	152	if (to->pkey.dsa->g != NULL) BN_free(to->pkey.dsa->g);
	153	to->pkey.dsa->g=a;
	154	}
	155	#endif
	156	return(1);
	157	err:
	158	return(0);
	159	}
	160
	161	int EVP_PKEY_missing_parameters(pkey)
	162	EVP_PKEY *pkey;
	163	{
	164	#ifndef NO_DSA
	165	if (pkey->type == EVP_PKEY_DSA)
	166	{
	167	DSA *dsa;
	168
	169	dsa=pkey->pkey.dsa;
	170	if ((dsa->p == NULL) \|\| (dsa->q == NULL) \|\| (dsa->g == NULL))
	171	return(1);
	172	}
	173	#endif
	174	return(0);
	175	}
	176
58964a49 RE	177	int EVP_PKEY_cmp_parameters(a,b)
	178	EVP_PKEY a,b;
	179	{
	180	#ifndef NO_DSA
	181	if ((a->type == EVP_PKEY_DSA) && (b->type == EVP_PKEY_DSA))
	182	{
	183	if ( BN_cmp(a->pkey.dsa->p,b->pkey.dsa->p) \|\|
	184	BN_cmp(a->pkey.dsa->q,b->pkey.dsa->q) \|\|
	185	BN_cmp(a->pkey.dsa->g,b->pkey.dsa->g))
	186	return(0);
	187	else
	188	return(1);
	189	}
	190	#endif
	191	return(-1);
	192	}
	193
d02b48c6 RE	194	EVP_PKEY *EVP_PKEY_new()
	195	{
	196	EVP_PKEY *ret;
	197
	198	ret=(EVP_PKEY *)Malloc(sizeof(EVP_PKEY));
	199	if (ret == NULL)
	200	{
	201	EVPerr(EVP_F_EVP_PKEY_NEW,ERR_R_MALLOC_FAILURE);
	202	return(NULL);
	203	}
	204	ret->type=EVP_PKEY_NONE;
	205	ret->references=1;
	206	ret->pkey.ptr=NULL;
	207	ret->attributes=NULL;
	208	ret->save_parameters=1;
	209	return(ret);
	210	}
	211
	212	int EVP_PKEY_assign(pkey,type,key)
	213	EVP_PKEY *pkey;
	214	int type;
	215	char *key;
	216	{
	217	if (pkey == NULL) return(0);
	218	if (pkey->pkey.ptr != NULL)
	219	EVP_PKEY_free_it(pkey);
	220	pkey->type=EVP_PKEY_type(type);
	221	pkey->save_type=type;
	222	pkey->pkey.ptr=key;
	223	return(1);
	224	}
	225
	226	int EVP_PKEY_type(type)
	227	int type;
	228	{
	229	switch (type)
	230	{
	231	case EVP_PKEY_RSA:
	232	case EVP_PKEY_RSA2:
	233	return(EVP_PKEY_RSA);
	234	case EVP_PKEY_DSA:
58964a49	235	case EVP_PKEY_DSA1:
d02b48c6 RE	236	case EVP_PKEY_DSA2:
d02b48c6 RE	237	case EVP_PKEY_DSA3:
58964a49	238	case EVP_PKEY_DSA4:
d02b48c6 RE	239	return(EVP_PKEY_DSA);
	240	case EVP_PKEY_DH:
	241	return(EVP_PKEY_DH);
	242	default:
	243	return(NID_undef);
	244	}
	245	}
	246
	247	void EVP_PKEY_free(x)
	248	EVP_PKEY *x;
	249	{
	250	int i;
	251
	252	if (x == NULL) return;
	253
	254	i=CRYPTO_add(&x->references,-1,CRYPTO_LOCK_EVP_PKEY);
58964a49 RE	255	#ifdef REF_PRINT
	256	REF_PRINT("EVP_PKEY",x);
	257	#endif
d02b48c6 RE	258	if (i > 0) return;
	259	#ifdef REF_CHECK
	260	if (i < 0)
	261	{
	262	fprintf(stderr,"EVP_PKEY_free, bad reference count\n");
	263	abort();
	264	}
	265	#endif
	266	EVP_PKEY_free_it(x);
	267	Free((char *)x);
	268	}
	269
	270	static void EVP_PKEY_free_it(x)
	271	EVP_PKEY *x;
	272	{
	273	switch (x->type)
	274	{
	275	#ifndef NO_RSA
	276	case EVP_PKEY_RSA:
	277	case EVP_PKEY_RSA2:
	278	RSA_free(x->pkey.rsa);
	279	break;
	280	#endif
	281	#ifndef NO_DSA
	282	case EVP_PKEY_DSA:
	283	case EVP_PKEY_DSA2:
	284	case EVP_PKEY_DSA3:
58964a49	285	case EVP_PKEY_DSA4:
d02b48c6 RE	286	DSA_free(x->pkey.dsa);
	287	break;
	288	#endif
	289	#ifndef NO_DH
	290	case EVP_PKEY_DH:
	291	DH_free(x->pkey.dh);
	292	break;
	293	#endif
	294	}
	295	}
	296