128 lines
4.5 KiB
C
128 lines
4.5 KiB
C
/* crypto/evp/p_open.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"
|
|
|
|
#ifndef OPENSSL_NO_RSA
|
|
|
|
#include <openssl/evp.h>
|
|
#include <openssl/objects.h>
|
|
#include <openssl/x509.h>
|
|
#include <openssl/rsa.h>
|
|
|
|
int EVP_OpenInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *type,
|
|
const unsigned char *ek, int ekl, const unsigned char *iv,
|
|
EVP_PKEY *priv)
|
|
{
|
|
unsigned char *key=NULL;
|
|
int i,size=0,ret=0;
|
|
|
|
if(type) {
|
|
EVP_CIPHER_CTX_init(ctx);
|
|
if(!EVP_DecryptInit_ex(ctx,type,NULL, NULL,NULL)) return 0;
|
|
}
|
|
|
|
if(!priv) return 1;
|
|
|
|
if (priv->type != EVP_PKEY_RSA)
|
|
{
|
|
EVPerr(EVP_F_EVP_OPENINIT,EVP_R_PUBLIC_KEY_NOT_RSA);
|
|
goto err;
|
|
}
|
|
|
|
size=RSA_size(priv->pkey.rsa);
|
|
key=(unsigned char *)OPENSSL_malloc(size+2);
|
|
if (key == NULL)
|
|
{
|
|
/* ERROR */
|
|
EVPerr(EVP_F_EVP_OPENINIT,ERR_R_MALLOC_FAILURE);
|
|
goto err;
|
|
}
|
|
|
|
i=EVP_PKEY_decrypt_old(key,ek,ekl,priv);
|
|
if ((i <= 0) || !EVP_CIPHER_CTX_set_key_length(ctx, i))
|
|
{
|
|
/* ERROR */
|
|
goto err;
|
|
}
|
|
if(!EVP_DecryptInit_ex(ctx,NULL,NULL,key,iv)) goto err;
|
|
|
|
ret=1;
|
|
err:
|
|
if (key != NULL) OPENSSL_cleanse(key,size);
|
|
OPENSSL_free(key);
|
|
return(ret);
|
|
}
|
|
|
|
int EVP_OpenFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
|
|
{
|
|
int i;
|
|
|
|
i=EVP_DecryptFinal_ex(ctx,out,outl);
|
|
if (i)
|
|
i = EVP_DecryptInit_ex(ctx,NULL,NULL,NULL,NULL);
|
|
return(i);
|
|
}
|
|
#else /* !OPENSSL_NO_RSA */
|
|
|
|
# ifdef PEDANTIC
|
|
static void *dummy=&dummy;
|
|
# endif
|
|
|
|
#endif
|