301 lines
9.4 KiB
C
301 lines
9.4 KiB
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.]
|
|
*/
|
|
|
|
#ifndef NO_RSA
|
|
#include <stdio.h>
|
|
#include "cryptlib.h"
|
|
#include <openssl/bn.h>
|
|
#include <openssl/rsa.h>
|
|
#include <openssl/rsaref.h>
|
|
#include <openssl/rand.h>
|
|
|
|
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,const BIGNUM *p,const BIGNUM *m,
|
|
BN_CTX *ctx, BN_MONT_CTX *m_ctx);
|
|
static int RSA_ref_mod_exp(BIGNUM *r0, BIGNUM *I, RSA *rsa);
|
|
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, const BIGNUM *p,
|
|
const 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);
|
|
}
|
|
#endif
|