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/**
* \file openssl.h
*
* \brief OpenSSL wrapper (definitions, inline functions).
*
* Copyright (C) 2006-2010, Brainspark B.V.
*
* This file is part of PolarSSL (http://www.polarssl.org)
* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/*
* OpenSSL wrapper contributed by David Barett
*/
#ifndef POLARSSL_OPENSSL_H
#define POLARSSL_OPENSSL_H
#include "aes.h"
#include "md5.h"
#include "rsa.h"
#include "sha1.h"
#define AES_SIZE 16
#define AES_BLOCK_SIZE 16
#define AES_KEY aes_context
#define MD5_CTX md5_context
#define SHA_CTX sha1_context
#define SHA1_Init( CTX ) \
sha1_starts( (CTX) )
#define SHA1_Update( CTX, BUF, LEN ) \
sha1_update( (CTX), (unsigned char *)(BUF), (LEN) )
#define SHA1_Final( OUT, CTX ) \
sha1_finish( (CTX), (OUT) )
#define MD5_Init( CTX ) \
md5_starts( (CTX) )
#define MD5_Update( CTX, BUF, LEN ) \
md5_update( (CTX), (unsigned char *)(BUF), (LEN) )
#define MD5_Final( OUT, CTX ) \
md5_finish( (CTX), (OUT) )
#define AES_set_encrypt_key( KEY, KEYSIZE, CTX ) \
aes_setkey_enc( (CTX), (KEY), (KEYSIZE) )
#define AES_set_decrypt_key( KEY, KEYSIZE, CTX ) \
aes_setkey_dec( (CTX), (KEY), (KEYSIZE) )
#define AES_cbc_encrypt( INPUT, OUTPUT, LEN, CTX, IV, MODE ) \
aes_crypt_cbc( (CTX), (MODE), (LEN), (IV), (INPUT), (OUTPUT) )
/*
* RSA stuff follows. TODO: needs cleanup
*/
inline int __RSA_Passthrough( void *output, void *input, int size )
{
memcpy( output, input, size );
return size;
}
inline rsa_context* d2i_RSA_PUBKEY( void *ignore, unsigned char **bufptr,
int len )
{
unsigned char *buffer = *(unsigned char **) bufptr;
rsa_context *rsa;
/*
* Not a general-purpose parser: only parses public key from *exactly*
* openssl genrsa -out privkey.pem 512 (or 1024)
* openssl rsa -in privkey.pem -out privatekey.der -outform der
* openssl rsa -in privkey.pem -out pubkey.der -outform der -pubout
*
* TODO: make a general-purpose parse
*/
if( ignore != 0 || ( len != 94 && len != 162 ) )
return( 0 );
rsa = (rsa_context *) malloc( sizeof( rsa_rsa ) );
if( rsa == NULL )
return( 0 );
memset( rsa, 0, sizeof( rsa_context ) );
if( ( len == 94 &&
mpi_read_binary( &rsa->N, &buffer[ 25], 64 ) == 0 &&
mpi_read_binary( &rsa->E, &buffer[ 91], 3 ) == 0 ) ||
( len == 162 &&
mpi_read_binary( &rsa->N, &buffer[ 29], 128 ) == 0 ) &&
mpi_read_binary( &rsa->E, &buffer[159], 3 ) == 0 )
{
/*
* key read successfully
*/
rsa->len = ( mpi_msb( &rsa->N ) + 7 ) >> 3;
return( rsa );
}
else
{
memset( rsa, 0, sizeof( rsa_context ) );
free( rsa );
return( 0 );
}
}
#define RSA rsa_context
#define RSA_PKCS1_PADDING 1 /* ignored; always encrypt with this */
#define RSA_size( CTX ) (CTX)->len
#define RSA_free( CTX ) rsa_free( CTX )
#define ERR_get_error( ) "ERR_get_error() not supported"
#define RSA_blinding_off( IGNORE )
#define d2i_RSAPrivateKey( a, b, c ) new rsa_context /* TODO: C++ bleh */
inline int RSA_public_decrypt ( int size, unsigned char* input, unsigned char* output, RSA* key, int ignore ) { int outsize=size; if( !rsa_pkcs1_decrypt( key, RSA_PUBLIC, &outsize, input, output ) ) return outsize; else return -1; }
inline int RSA_private_decrypt( int size, unsigned char* input, unsigned char* output, RSA* key, int ignore ) { int outsize=size; if( !rsa_pkcs1_decrypt( key, RSA_PRIVATE, &outsize, input, output ) ) return outsize; else return -1; }
inline int RSA_public_encrypt ( int size, unsigned char* input, unsigned char* output, RSA* key, int ignore ) { if( !rsa_pkcs1_encrypt( key, RSA_PUBLIC, size, input, output ) ) return RSA_size(key); else return -1; }
inline int RSA_private_encrypt( int size, unsigned char* input, unsigned char* output, RSA* key, int ignore ) { if( !rsa_pkcs1_encrypt( key, RSA_PRIVATE, size, input, output ) ) return RSA_size(key); else return -1; }
#ifdef __cplusplus
}
#endif
#endif /* openssl.h */
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