[thirdparty/openssl.git] / rsaref / rsaref.c

/* rsaref/rsaref.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/bn.h>
#include <openssl/rsa.h>
#include <openssl/rsaref.h>
#include <openssl/rand.h>

/* 
 * RSAREFerr(RSAREF_F_RSA_REF_BN2BIN,RSAREF_R_CONTENT_ENCODING);
 * RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_DECRYPT,RSAREF_R_DATA);
 * RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_ENCRYPT,RSAREF_R_DIGEST_ALGORITHM);
 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_DECRYPT,RSAREF_R_ENCODING);
 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_KEY);
 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_KEY_ENCODING);
 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_LEN);
 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_MODULUS_LEN);
 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_NEED_RANDOM);
 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_PRIVATE_KEY);
 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_PUBLIC_KEY);
 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_SIGNATURE);
 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_SIGNATURE_ENCODING);
 * RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_ENCRYPTION_ALGORITHM);
 * RSAREFerr(RSAREF_F_RSAREF_BN2BIN,ERR_R_BN_LIB);
 */

#ifndef NOPROTO
static int RSAref_bn2bin(BIGNUM * from, unsigned char* to, int max);
#ifdef undef
static BIGNUM* RSAref_bin2bn(unsigned char* from, BIGNUM * to, int max);
#endif
static int RSAref_Public_eay2ref(RSA * from, RSArefPublicKey * to);
static int RSAref_Private_eay2ref(RSA * from, RSArefPrivateKey * to);
int RSA_ref_private_decrypt(int len, unsigned char *from,
	unsigned char *to, RSA *rsa, int padding);
int RSA_ref_private_encrypt(int len, unsigned char *from,
	unsigned char *to, RSA *rsa, int padding);
int RSA_ref_public_encrypt(int len, unsigned char *from,
	unsigned char *to, RSA *rsa, int padding);
int RSA_ref_public_decrypt(int len, unsigned char *from,
	unsigned char *to, RSA *rsa, int padding);
static int BN_ref_mod_exp(BIGNUM *r,BIGNUM *a,BIGNUM *p,BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
static int RSA_ref_mod_exp(BIGNUM *r0, BIGNUM *I, RSA *rsa);
#else

static int RSAref_bn2bin();
#ifdef undef
static BIGNUM* RSAref_bin2bn();
#endif
static int RSAref_Public_eay2ref();
static int RSAref_Private_eay2ref();
static int BN_ref_mod_exp();
static int RSA_ref_mod_exp();
int RSA_ref_private_decrypt();
int RSA_ref_private_encrypt();
int RSA_ref_public_encrypt();
int RSA_ref_public_decrypt();
static int BN_ref_mod_exp();
static int RSA_ref_mod_exp();
#endif

static RSA_METHOD rsa_pkcs1_ref_meth={
	"RSAref PKCS#1 RSA",
	RSA_ref_public_encrypt,
	RSA_ref_public_decrypt,
	RSA_ref_private_encrypt,
	RSA_ref_private_decrypt,
	RSA_ref_mod_exp,
	BN_ref_mod_exp,
	NULL,
	NULL,
	0,
	NULL,
	};

RSA_METHOD *RSA_PKCS1_RSAref(void)
	{
	return(&rsa_pkcs1_ref_meth);
	}

static int RSA_ref_mod_exp(BIGNUM *r0, BIGNUM *I, RSA *rsa)
	{
	RSAREFerr(RSAREF_F_RSA_REF_MOD_EXP,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
	return(0);
	}

static int BN_ref_mod_exp(BIGNUM *r, BIGNUM *a, BIGNUM *p, BIGNUM *m,
	     BN_CTX *ctx, BN_MONT_CTX *m_ctx)
	{
	RSAREFerr(RSAREF_F_BN_REF_MOD_EXP,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
	return(0);
	}

/* unsigned char *to:  [max]    */
static int RSAref_bn2bin(BIGNUM *from, unsigned char *to, int max)
	{
	int i;

	i=BN_num_bytes(from);
	if (i > max)
		{
		RSAREFerr(RSAREF_F_RSAREF_BN2BIN,RSAREF_R_LEN);
		return(0);
		}

	memset(to,0,(unsigned int)max);
	if (!BN_bn2bin(from,&(to[max-i])))
		return(0);
	return(1);
	}

#ifdef undef
/* unsigned char *from:  [max]    */
static BIGNUM *RSAref_bin2bn(unsigned char *from, BIGNUM *to, int max)
	{
	int i;
	BIGNUM *ret;

	for (i=0; i<max; i++)
		if (from[i]) break;

	ret=BN_bin2bn(&(from[i]),max-i,to);
	return(ret);
	}

static int RSAref_Public_ref2eay(RSArefPublicKey *from, RSA *to)
	{
	to->n=RSAref_bin2bn(from->m,NULL,RSAref_MAX_LEN);
	to->e=RSAref_bin2bn(from->e,NULL,RSAref_MAX_LEN);
	if ((to->n == NULL) || (to->e == NULL)) return(0);
	return(1);
	}
#endif

static int RSAref_Public_eay2ref(RSA *from, RSArefPublicKey *to)
	{
	to->bits=BN_num_bits(from->n);
	if (!RSAref_bn2bin(from->n,to->m,RSAref_MAX_LEN)) return(0);
	if (!RSAref_bn2bin(from->e,to->e,RSAref_MAX_LEN)) return(0);
	return(1);
	}

#ifdef undef
static int RSAref_Private_ref2eay(RSArefPrivateKey *from, RSA *to)
	{
	if ((to->n=RSAref_bin2bn(from->m,NULL,RSAref_MAX_LEN)) == NULL)
		return(0);
	if ((to->e=RSAref_bin2bn(from->e,NULL,RSAref_MAX_LEN)) == NULL)
		return(0);
	if ((to->d=RSAref_bin2bn(from->d,NULL,RSAref_MAX_LEN)) == NULL)
		return(0);
	if ((to->p=RSAref_bin2bn(from->prime[0],NULL,RSAref_MAX_PLEN)) == NULL)
		return(0);
	if ((to->q=RSAref_bin2bn(from->prime[1],NULL,RSAref_MAX_PLEN)) == NULL)
		return(0);
	if ((to->dmp1=RSAref_bin2bn(from->pexp[0],NULL,RSAref_MAX_PLEN))
		== NULL)
		return(0);
	if ((to->dmq1=RSAref_bin2bn(from->pexp[1],NULL,RSAref_MAX_PLEN))
		== NULL)
		return(0);
	if ((to->iqmp=RSAref_bin2bn(from->coef,NULL,RSAref_MAX_PLEN)) == NULL)
		return(0);
	return(1);
	}
#endif

static int RSAref_Private_eay2ref(RSA *from, RSArefPrivateKey *to)
	{
	to->bits=BN_num_bits(from->n);
	if (!RSAref_bn2bin(from->n,to->m,RSAref_MAX_LEN)) return(0);
	if (!RSAref_bn2bin(from->e,to->e,RSAref_MAX_LEN)) return(0);
	if (!RSAref_bn2bin(from->d,to->d,RSAref_MAX_LEN)) return(0);
	if (!RSAref_bn2bin(from->p,to->prime[0],RSAref_MAX_PLEN)) return(0);
	if (!RSAref_bn2bin(from->q,to->prime[1],RSAref_MAX_PLEN)) return(0);
	if (!RSAref_bn2bin(from->dmp1,to->pexp[0],RSAref_MAX_PLEN)) return(0);
	if (!RSAref_bn2bin(from->dmq1,to->pexp[1],RSAref_MAX_PLEN)) return(0);
	if (!RSAref_bn2bin(from->iqmp,to->coef,RSAref_MAX_PLEN)) return(0);
	return(1);
	}

int RSA_ref_private_decrypt(int len, unsigned char *from, unsigned char *to,
	     RSA *rsa, int padding)
	{
	int i,outlen= -1;
	RSArefPrivateKey RSAkey;

	if (!RSAref_Private_eay2ref(rsa,&RSAkey))
		goto err;
	if ((i=RSAPrivateDecrypt(to,&outlen,from,len,&RSAkey)) != 0)
		{
		RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_DECRYPT,i);
		outlen= -1;
		}
err:
	memset(&RSAkey,0,sizeof(RSAkey));
	return(outlen);
	}

int RSA_ref_private_encrypt(int len, unsigned char *from, unsigned char *to,
	     RSA *rsa, int padding)
	{
	int i,outlen= -1;
	RSArefPrivateKey RSAkey;

	if (padding != RSA_PKCS1_PADDING)
		{
		RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_ENCRYPT, RSA_R_UNKNOWN_PADDING_TYPE);
		goto err;
	}
	if (!RSAref_Private_eay2ref(rsa,&RSAkey))
		goto err;
	if ((i=RSAPrivateEncrypt(to,&outlen,from,len,&RSAkey)) != 0)
		{
		RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_ENCRYPT,i);
		outlen= -1;
		}
err:
	memset(&RSAkey,0,sizeof(RSAkey));
	return(outlen);
	}

int RSA_ref_public_decrypt(int len, unsigned char *from, unsigned char *to,
	     RSA *rsa, int padding)
	{
	int i,outlen= -1;
	RSArefPublicKey RSAkey;

	if (!RSAref_Public_eay2ref(rsa,&RSAkey))
		goto err;
	if ((i=RSAPublicDecrypt(to,&outlen,from,len,&RSAkey)) != 0)
		{
		RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_DECRYPT,i);
		outlen= -1;
		}
err:
	memset(&RSAkey,0,sizeof(RSAkey));
	return(outlen);
	}

int RSA_ref_public_encrypt(int len, unsigned char *from, unsigned char *to,
	     RSA *rsa, int padding)
	{
	int outlen= -1;
	int i;
	RSArefPublicKey RSAkey;
	RSARandomState rnd;
	unsigned char buf[16];

	if (padding != RSA_PKCS1_PADDING && padding != RSA_SSLV23_PADDING) 
		{
		RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT, RSA_R_UNKNOWN_PADDING_TYPE);
		goto err;
		}
	
	R_RandomInit(&rnd);
	R_GetRandomBytesNeeded((unsigned int *)&i,&rnd);
	while (i > 0)
		{
		RAND_bytes(buf,16);
		R_RandomUpdate(&rnd,buf,(unsigned int)((i>16)?16:i));
		i-=16;
		}

	if (!RSAref_Public_eay2ref(rsa,&RSAkey))
		goto err;
	if ((i=RSAPublicEncrypt(to,&outlen,from,len,&RSAkey,&rnd)) != 0)
		{
		RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,i);
		outlen= -1;
		goto err;
		}
err:
	memset(&RSAkey,0,sizeof(RSAkey));
	R_RandomFinal(&rnd);
	memset(&rnd,0,sizeof(rnd));
	return(outlen);
	}
Commit	Line	Data
d02b48c6	1	/* rsaref/rsaref.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 BM	61	#include <openssl/bn.h>
	62	#include <openssl/rsa.h>
	63	#include <openssl/rsaref.h>
	64	#include <openssl/rand.h>
d02b48c6 RE	65
	66	/*
	67	* RSAREFerr(RSAREF_F_RSA_REF_BN2BIN,RSAREF_R_CONTENT_ENCODING);
	68	* RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_DECRYPT,RSAREF_R_DATA);
	69	* RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_ENCRYPT,RSAREF_R_DIGEST_ALGORITHM);
	70	* RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_DECRYPT,RSAREF_R_ENCODING);
	71	* RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_KEY);
	72	* RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_KEY_ENCODING);
	73	* RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_LEN);
	74	* RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_MODULUS_LEN);
	75	* RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_NEED_RANDOM);
	76	* RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_PRIVATE_KEY);
	77	* RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_PUBLIC_KEY);
	78	* RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_SIGNATURE);
	79	* RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_SIGNATURE_ENCODING);
	80	* RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,RSAREF_R_ENCRYPTION_ALGORITHM);
	81	* RSAREFerr(RSAREF_F_RSAREF_BN2BIN,ERR_R_BN_LIB);
	82	*/
	83
	84	#ifndef NOPROTO
	85	static int RSAref_bn2bin(BIGNUM * from, unsigned char* to, int max);
	86	#ifdef undef
	87	static BIGNUM* RSAref_bin2bn(unsigned char* from, BIGNUM * to, int max);
	88	#endif
	89	static int RSAref_Public_eay2ref(RSA * from, RSArefPublicKey * to);
	90	static int RSAref_Private_eay2ref(RSA * from, RSArefPrivateKey * to);
	91	int RSA_ref_private_decrypt(int len, unsigned char *from,
	92	unsigned char to, RSA rsa, int padding);
	93	int RSA_ref_private_encrypt(int len, unsigned char *from,
	94	unsigned char to, RSA rsa, int padding);
	95	int RSA_ref_public_encrypt(int len, unsigned char *from,
	96	unsigned char to, RSA rsa, int padding);
	97	int RSA_ref_public_decrypt(int len, unsigned char *from,
	98	unsigned char to, RSA rsa, int padding);
ee13f9b1	99	static int BN_ref_mod_exp(BIGNUM r,BIGNUM a,BIGNUM p,BIGNUM m, BN_CTX ctx, BN_MONT_CTX m_ctx);
d02b48c6 RE	100	static int RSA_ref_mod_exp(BIGNUM r0, BIGNUM I, RSA *rsa);
	101	#else
	102
	103	static int RSAref_bn2bin();
	104	#ifdef undef
	105	static BIGNUM* RSAref_bin2bn();
	106	#endif
	107	static int RSAref_Public_eay2ref();
	108	static int RSAref_Private_eay2ref();
	109	static int BN_ref_mod_exp();
	110	static int RSA_ref_mod_exp();
	111	int RSA_ref_private_decrypt();
	112	int RSA_ref_private_encrypt();
	113	int RSA_ref_public_encrypt();
	114	int RSA_ref_public_decrypt();
	115	static int BN_ref_mod_exp();
	116	static int RSA_ref_mod_exp();
	117	#endif
	118
	119	static RSA_METHOD rsa_pkcs1_ref_meth={
	120	"RSAref PKCS#1 RSA",
	121	RSA_ref_public_encrypt,
	122	RSA_ref_public_decrypt,
	123	RSA_ref_private_encrypt,
	124	RSA_ref_private_decrypt,
	125	RSA_ref_mod_exp,
	126	BN_ref_mod_exp,
	127	NULL,
	128	NULL,
58964a49 RE	129	0,
58964a49 RE	130	NULL,
d02b48c6 RE	131	};
d02b48c6 RE	132
6b691a5c	133	RSA_METHOD *RSA_PKCS1_RSAref(void)
d02b48c6 RE	134	{
	135	return(&rsa_pkcs1_ref_meth);
	136	}
	137
6b691a5c	138	static int RSA_ref_mod_exp(BIGNUM r0, BIGNUM I, RSA *rsa)
d02b48c6 RE	139	{
	140	RSAREFerr(RSAREF_F_RSA_REF_MOD_EXP,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
	141	return(0);
	142	}
	143
6b691a5c UM	144	static int BN_ref_mod_exp(BIGNUM r, BIGNUM a, BIGNUM p, BIGNUM m,
6b691a5c UM	145	BN_CTX ctx, BN_MONT_CTX m_ctx)
d02b48c6 RE	146	{
	147	RSAREFerr(RSAREF_F_BN_REF_MOD_EXP,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
	148	return(0);
	149	}
	150
6b691a5c UM	151	/* unsigned char to: [max] /
6b691a5c UM	152	static int RSAref_bn2bin(BIGNUM from, unsigned char to, int max)
d02b48c6 RE	153	{
	154	int i;
	155
	156	i=BN_num_bytes(from);
	157	if (i > max)
	158	{
	159	RSAREFerr(RSAREF_F_RSAREF_BN2BIN,RSAREF_R_LEN);
	160	return(0);
	161	}
	162
	163	memset(to,0,(unsigned int)max);
	164	if (!BN_bn2bin(from,&(to[max-i])))
	165	return(0);
	166	return(1);
	167	}
	168
	169	#ifdef undef
6b691a5c UM	170	/* unsigned char from: [max] /
6b691a5c UM	171	static BIGNUM RSAref_bin2bn(unsigned char from, BIGNUM *to, int max)
d02b48c6 RE	172	{
	173	int i;
	174	BIGNUM *ret;
	175
	176	for (i=0; i<max; i++)
	177	if (from[i]) break;
	178
	179	ret=BN_bin2bn(&(from[i]),max-i,to);
	180	return(ret);
	181	}
	182
6b691a5c	183	static int RSAref_Public_ref2eay(RSArefPublicKey from, RSA to)
d02b48c6 RE	184	{
	185	to->n=RSAref_bin2bn(from->m,NULL,RSAref_MAX_LEN);
	186	to->e=RSAref_bin2bn(from->e,NULL,RSAref_MAX_LEN);
	187	if ((to->n == NULL) \|\| (to->e == NULL)) return(0);
	188	return(1);
	189	}
	190	#endif
	191
6b691a5c	192	static int RSAref_Public_eay2ref(RSA from, RSArefPublicKey to)
d02b48c6 RE	193	{
	194	to->bits=BN_num_bits(from->n);
	195	if (!RSAref_bn2bin(from->n,to->m,RSAref_MAX_LEN)) return(0);
	196	if (!RSAref_bn2bin(from->e,to->e,RSAref_MAX_LEN)) return(0);
	197	return(1);
	198	}
	199
	200	#ifdef undef
6b691a5c	201	static int RSAref_Private_ref2eay(RSArefPrivateKey from, RSA to)
d02b48c6 RE	202	{
	203	if ((to->n=RSAref_bin2bn(from->m,NULL,RSAref_MAX_LEN)) == NULL)
	204	return(0);
	205	if ((to->e=RSAref_bin2bn(from->e,NULL,RSAref_MAX_LEN)) == NULL)
	206	return(0);
	207	if ((to->d=RSAref_bin2bn(from->d,NULL,RSAref_MAX_LEN)) == NULL)
	208	return(0);
	209	if ((to->p=RSAref_bin2bn(from->prime[0],NULL,RSAref_MAX_PLEN)) == NULL)
	210	return(0);
	211	if ((to->q=RSAref_bin2bn(from->prime[1],NULL,RSAref_MAX_PLEN)) == NULL)
	212	return(0);
	213	if ((to->dmp1=RSAref_bin2bn(from->pexp[0],NULL,RSAref_MAX_PLEN))
	214	== NULL)
	215	return(0);
	216	if ((to->dmq1=RSAref_bin2bn(from->pexp[1],NULL,RSAref_MAX_PLEN))
	217	== NULL)
	218	return(0);
	219	if ((to->iqmp=RSAref_bin2bn(from->coef,NULL,RSAref_MAX_PLEN)) == NULL)
	220	return(0);
	221	return(1);
	222	}
	223	#endif
	224
6b691a5c	225	static int RSAref_Private_eay2ref(RSA from, RSArefPrivateKey to)
d02b48c6 RE	226	{
	227	to->bits=BN_num_bits(from->n);
	228	if (!RSAref_bn2bin(from->n,to->m,RSAref_MAX_LEN)) return(0);
	229	if (!RSAref_bn2bin(from->e,to->e,RSAref_MAX_LEN)) return(0);
	230	if (!RSAref_bn2bin(from->d,to->d,RSAref_MAX_LEN)) return(0);
	231	if (!RSAref_bn2bin(from->p,to->prime[0],RSAref_MAX_PLEN)) return(0);
	232	if (!RSAref_bn2bin(from->q,to->prime[1],RSAref_MAX_PLEN)) return(0);
	233	if (!RSAref_bn2bin(from->dmp1,to->pexp[0],RSAref_MAX_PLEN)) return(0);
	234	if (!RSAref_bn2bin(from->dmq1,to->pexp[1],RSAref_MAX_PLEN)) return(0);
	235	if (!RSAref_bn2bin(from->iqmp,to->coef,RSAref_MAX_PLEN)) return(0);
	236	return(1);
	237	}
	238
6b691a5c UM	239	int RSA_ref_private_decrypt(int len, unsigned char from, unsigned char to,
6b691a5c UM	240	RSA *rsa, int padding)
d02b48c6 RE	241	{
	242	int i,outlen= -1;
	243	RSArefPrivateKey RSAkey;
	244
	245	if (!RSAref_Private_eay2ref(rsa,&RSAkey))
	246	goto err;
	247	if ((i=RSAPrivateDecrypt(to,&outlen,from,len,&RSAkey)) != 0)
	248	{
	249	RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_DECRYPT,i);
	250	outlen= -1;
	251	}
	252	err:
	253	memset(&RSAkey,0,sizeof(RSAkey));
	254	return(outlen);
	255	}
	256
6b691a5c UM	257	int RSA_ref_private_encrypt(int len, unsigned char from, unsigned char to,
6b691a5c UM	258	RSA *rsa, int padding)
d02b48c6 RE	259	{
	260	int i,outlen= -1;
	261	RSArefPrivateKey RSAkey;
	262
28847dd1 UM	263	if (padding != RSA_PKCS1_PADDING)
	264	{
	265	RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_ENCRYPT, RSA_R_UNKNOWN_PADDING_TYPE);
	266	goto err;
	267	}
d02b48c6 RE	268	if (!RSAref_Private_eay2ref(rsa,&RSAkey))
	269	goto err;
	270	if ((i=RSAPrivateEncrypt(to,&outlen,from,len,&RSAkey)) != 0)
	271	{
	272	RSAREFerr(RSAREF_F_RSA_REF_PRIVATE_ENCRYPT,i);
	273	outlen= -1;
	274	}
	275	err:
	276	memset(&RSAkey,0,sizeof(RSAkey));
	277	return(outlen);
	278	}
	279
6b691a5c UM	280	int RSA_ref_public_decrypt(int len, unsigned char from, unsigned char to,
6b691a5c UM	281	RSA *rsa, int padding)
d02b48c6 RE	282	{
	283	int i,outlen= -1;
	284	RSArefPublicKey RSAkey;
	285
	286	if (!RSAref_Public_eay2ref(rsa,&RSAkey))
	287	goto err;
	288	if ((i=RSAPublicDecrypt(to,&outlen,from,len,&RSAkey)) != 0)
	289	{
	290	RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_DECRYPT,i);
	291	outlen= -1;
	292	}
	293	err:
	294	memset(&RSAkey,0,sizeof(RSAkey));
	295	return(outlen);
	296	}
	297
6b691a5c UM	298	int RSA_ref_public_encrypt(int len, unsigned char from, unsigned char to,
6b691a5c UM	299	RSA *rsa, int padding)
d02b48c6 RE	300	{
	301	int outlen= -1;
	302	int i;
	303	RSArefPublicKey RSAkey;
	304	RSARandomState rnd;
	305	unsigned char buf[16];
	306
28847dd1 UM	307	if (padding != RSA_PKCS1_PADDING && padding != RSA_SSLV23_PADDING)
	308	{
	309	RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT, RSA_R_UNKNOWN_PADDING_TYPE);
0e9fc711	310	goto err;
28847dd1 UM	311	}
28847dd1 UM	312
d02b48c6 RE	313	R_RandomInit(&rnd);
	314	R_GetRandomBytesNeeded((unsigned int *)&i,&rnd);
	315	while (i > 0)
	316	{
	317	RAND_bytes(buf,16);
	318	R_RandomUpdate(&rnd,buf,(unsigned int)((i>16)?16:i));
	319	i-=16;
	320	}
	321
	322	if (!RSAref_Public_eay2ref(rsa,&RSAkey))
	323	goto err;
	324	if ((i=RSAPublicEncrypt(to,&outlen,from,len,&RSAkey,&rnd)) != 0)
	325	{
	326	RSAREFerr(RSAREF_F_RSA_REF_PUBLIC_ENCRYPT,i);
	327	outlen= -1;
	328	goto err;
	329	}
	330	err:
	331	memset(&RSAkey,0,sizeof(RSAkey));
	332	R_RandomFinal(&rnd);
	333	memset(&rnd,0,sizeof(rnd));
	334	return(outlen);
	335	}
	336