333 lines
8.6 KiB
C
333 lines
8.6 KiB
C
/* crypto/rsa/rsa_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 <openssl/crypto.h>
|
|
#include "cryptlib.h"
|
|
#include <openssl/lhash.h>
|
|
#include <openssl/bn.h>
|
|
#include <openssl/rsa.h>
|
|
#include <openssl/rand.h>
|
|
#ifndef OPENSSL_NO_ENGINE
|
|
#include <openssl/engine.h>
|
|
#endif
|
|
|
|
#ifdef OPENSSL_FIPS
|
|
#include <openssl/fips.h>
|
|
#endif
|
|
|
|
const char RSA_version[]="RSA" OPENSSL_VERSION_PTEXT;
|
|
|
|
static const RSA_METHOD *default_RSA_meth=NULL;
|
|
|
|
RSA *RSA_new(void)
|
|
{
|
|
RSA *r=RSA_new_method(NULL);
|
|
|
|
return r;
|
|
}
|
|
|
|
void RSA_set_default_method(const RSA_METHOD *meth)
|
|
{
|
|
default_RSA_meth = meth;
|
|
}
|
|
|
|
const RSA_METHOD *RSA_get_default_method(void)
|
|
{
|
|
if (default_RSA_meth == NULL)
|
|
{
|
|
#ifdef OPENSSL_FIPS
|
|
if (FIPS_mode())
|
|
return FIPS_rsa_pkcs1_ssleay();
|
|
else
|
|
return RSA_PKCS1_SSLeay();
|
|
#else
|
|
#ifdef RSA_NULL
|
|
default_RSA_meth=RSA_null_method();
|
|
#else
|
|
default_RSA_meth=RSA_PKCS1_SSLeay();
|
|
#endif
|
|
#endif
|
|
}
|
|
|
|
return default_RSA_meth;
|
|
}
|
|
|
|
const RSA_METHOD *RSA_get_method(const RSA *rsa)
|
|
{
|
|
return rsa->meth;
|
|
}
|
|
|
|
int RSA_set_method(RSA *rsa, const RSA_METHOD *meth)
|
|
{
|
|
/* NB: The caller is specifically setting a method, so it's not up to us
|
|
* to deal with which ENGINE it comes from. */
|
|
const RSA_METHOD *mtmp;
|
|
mtmp = rsa->meth;
|
|
if (mtmp->finish) mtmp->finish(rsa);
|
|
#ifndef OPENSSL_NO_ENGINE
|
|
if (rsa->engine)
|
|
{
|
|
ENGINE_finish(rsa->engine);
|
|
rsa->engine = NULL;
|
|
}
|
|
#endif
|
|
rsa->meth = meth;
|
|
if (meth->init) meth->init(rsa);
|
|
return 1;
|
|
}
|
|
|
|
RSA *RSA_new_method(ENGINE *engine)
|
|
{
|
|
RSA *ret;
|
|
|
|
ret=(RSA *)OPENSSL_malloc(sizeof(RSA));
|
|
if (ret == NULL)
|
|
{
|
|
RSAerr(RSA_F_RSA_NEW_METHOD,ERR_R_MALLOC_FAILURE);
|
|
return NULL;
|
|
}
|
|
|
|
ret->meth = RSA_get_default_method();
|
|
#ifndef OPENSSL_NO_ENGINE
|
|
if (engine)
|
|
{
|
|
if (!ENGINE_init(engine))
|
|
{
|
|
RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_ENGINE_LIB);
|
|
OPENSSL_free(ret);
|
|
return NULL;
|
|
}
|
|
ret->engine = engine;
|
|
}
|
|
else
|
|
ret->engine = ENGINE_get_default_RSA();
|
|
if(ret->engine)
|
|
{
|
|
ret->meth = ENGINE_get_RSA(ret->engine);
|
|
if(!ret->meth)
|
|
{
|
|
RSAerr(RSA_F_RSA_NEW_METHOD,
|
|
ERR_R_ENGINE_LIB);
|
|
ENGINE_finish(ret->engine);
|
|
OPENSSL_free(ret);
|
|
return NULL;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
ret->pad=0;
|
|
ret->version=0;
|
|
ret->n=NULL;
|
|
ret->e=NULL;
|
|
ret->d=NULL;
|
|
ret->p=NULL;
|
|
ret->q=NULL;
|
|
ret->dmp1=NULL;
|
|
ret->dmq1=NULL;
|
|
ret->iqmp=NULL;
|
|
ret->references=1;
|
|
ret->_method_mod_n=NULL;
|
|
ret->_method_mod_p=NULL;
|
|
ret->_method_mod_q=NULL;
|
|
ret->blinding=NULL;
|
|
ret->mt_blinding=NULL;
|
|
ret->bignum_data=NULL;
|
|
ret->flags=ret->meth->flags & ~RSA_FLAG_NON_FIPS_ALLOW;
|
|
if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_RSA, ret, &ret->ex_data))
|
|
{
|
|
#ifndef OPENSSL_NO_ENGINE
|
|
if (ret->engine)
|
|
ENGINE_finish(ret->engine);
|
|
#endif
|
|
OPENSSL_free(ret);
|
|
return(NULL);
|
|
}
|
|
|
|
if ((ret->meth->init != NULL) && !ret->meth->init(ret))
|
|
{
|
|
#ifndef OPENSSL_NO_ENGINE
|
|
if (ret->engine)
|
|
ENGINE_finish(ret->engine);
|
|
#endif
|
|
CRYPTO_free_ex_data(CRYPTO_EX_INDEX_RSA, ret, &ret->ex_data);
|
|
OPENSSL_free(ret);
|
|
ret=NULL;
|
|
}
|
|
return(ret);
|
|
}
|
|
|
|
void RSA_free(RSA *r)
|
|
{
|
|
int i;
|
|
|
|
if (r == NULL) return;
|
|
|
|
i=CRYPTO_add(&r->references,-1,CRYPTO_LOCK_RSA);
|
|
#ifdef REF_PRINT
|
|
REF_PRINT("RSA",r);
|
|
#endif
|
|
if (i > 0) return;
|
|
#ifdef REF_CHECK
|
|
if (i < 0)
|
|
{
|
|
fprintf(stderr,"RSA_free, bad reference count\n");
|
|
abort();
|
|
}
|
|
#endif
|
|
|
|
if (r->meth->finish)
|
|
r->meth->finish(r);
|
|
#ifndef OPENSSL_NO_ENGINE
|
|
if (r->engine)
|
|
ENGINE_finish(r->engine);
|
|
#endif
|
|
|
|
CRYPTO_free_ex_data(CRYPTO_EX_INDEX_RSA, r, &r->ex_data);
|
|
|
|
if (r->n != NULL) BN_clear_free(r->n);
|
|
if (r->e != NULL) BN_clear_free(r->e);
|
|
if (r->d != NULL) BN_clear_free(r->d);
|
|
if (r->p != NULL) BN_clear_free(r->p);
|
|
if (r->q != NULL) BN_clear_free(r->q);
|
|
if (r->dmp1 != NULL) BN_clear_free(r->dmp1);
|
|
if (r->dmq1 != NULL) BN_clear_free(r->dmq1);
|
|
if (r->iqmp != NULL) BN_clear_free(r->iqmp);
|
|
if (r->blinding != NULL) BN_BLINDING_free(r->blinding);
|
|
if (r->mt_blinding != NULL) BN_BLINDING_free(r->mt_blinding);
|
|
if (r->bignum_data != NULL) OPENSSL_free_locked(r->bignum_data);
|
|
OPENSSL_free(r);
|
|
}
|
|
|
|
int RSA_up_ref(RSA *r)
|
|
{
|
|
int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_RSA);
|
|
#ifdef REF_PRINT
|
|
REF_PRINT("RSA",r);
|
|
#endif
|
|
#ifdef REF_CHECK
|
|
if (i < 2)
|
|
{
|
|
fprintf(stderr, "RSA_up_ref, bad reference count\n");
|
|
abort();
|
|
}
|
|
#endif
|
|
return ((i > 1) ? 1 : 0);
|
|
}
|
|
|
|
int RSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
|
|
CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
|
|
{
|
|
return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_RSA, argl, argp,
|
|
new_func, dup_func, free_func);
|
|
}
|
|
|
|
int RSA_set_ex_data(RSA *r, int idx, void *arg)
|
|
{
|
|
return(CRYPTO_set_ex_data(&r->ex_data,idx,arg));
|
|
}
|
|
|
|
void *RSA_get_ex_data(const RSA *r, int idx)
|
|
{
|
|
return(CRYPTO_get_ex_data(&r->ex_data,idx));
|
|
}
|
|
|
|
int RSA_memory_lock(RSA *r)
|
|
{
|
|
int i,j,k,off;
|
|
char *p;
|
|
BIGNUM *bn,**t[6],*b;
|
|
BN_ULONG *ul;
|
|
|
|
if (r->d == NULL) return(1);
|
|
t[0]= &r->d;
|
|
t[1]= &r->p;
|
|
t[2]= &r->q;
|
|
t[3]= &r->dmp1;
|
|
t[4]= &r->dmq1;
|
|
t[5]= &r->iqmp;
|
|
k=sizeof(BIGNUM)*6;
|
|
off=k/sizeof(BN_ULONG)+1;
|
|
j=1;
|
|
for (i=0; i<6; i++)
|
|
j+= (*t[i])->top;
|
|
if ((p=OPENSSL_malloc_locked((off+j)*sizeof(BN_ULONG))) == NULL)
|
|
{
|
|
RSAerr(RSA_F_RSA_MEMORY_LOCK,ERR_R_MALLOC_FAILURE);
|
|
return(0);
|
|
}
|
|
bn=(BIGNUM *)p;
|
|
ul=(BN_ULONG *)&(p[off]);
|
|
for (i=0; i<6; i++)
|
|
{
|
|
b= *(t[i]);
|
|
*(t[i])= &(bn[i]);
|
|
memcpy((char *)&(bn[i]),(char *)b,sizeof(BIGNUM));
|
|
bn[i].flags=BN_FLG_STATIC_DATA;
|
|
bn[i].d=ul;
|
|
memcpy((char *)ul,b->d,sizeof(BN_ULONG)*b->top);
|
|
ul+=b->top;
|
|
BN_clear_free(b);
|
|
}
|
|
|
|
/* I should fix this so it can still be done */
|
|
r->flags&= ~(RSA_FLAG_CACHE_PRIVATE|RSA_FLAG_CACHE_PUBLIC);
|
|
|
|
r->bignum_data=p;
|
|
return(1);
|
|
}
|