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- Added generic cipher wrapper for integration with OpenVPN (donated by Fox-IT)
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Paul Bakker
295
library/cipher_wrap.c
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295
library/cipher_wrap.c
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/**
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* \file md_wrap.c
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*
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* \brief Generic message digest wrapper for PolarSSL
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*
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* \author Adriaan de Jong <dejong@fox-it.com>
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*
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* Copyright (C) 2006-2010, Brainspark B.V.
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*
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* This file is part of PolarSSL (http://www.polarssl.org)
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* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "polarssl/config.h"
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#if defined(POLARSSL_CIPHER_C)
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#include "polarssl/cipher_wrap.h"
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#include "polarssl/aes.h"
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#include "polarssl/camellia.h"
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#include "polarssl/des.h"
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#include <string.h>
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#include <stdlib.h>
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#if defined(POLARSSL_AES_C)
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int aes_crypt_cbc_wrap( void *ctx, operation_t operation, int length,
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unsigned char *iv, const unsigned char *input, unsigned char *output )
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{
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return aes_crypt_cbc( (aes_context *) ctx, operation, length, iv, input, output );
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}
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int aes_setkey_dec_wrap( void *ctx, const unsigned char *key, int key_length )
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{
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return aes_setkey_dec( (aes_context *) ctx, key, key_length );
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}
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int aes_setkey_enc_wrap( void *ctx, const unsigned char *key, int key_length )
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{
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return aes_setkey_enc( (aes_context *) ctx, key, key_length );
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}
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static void * aes_ctx_alloc( void )
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{
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return malloc( sizeof( aes_context ) );
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}
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static void aes_ctx_free( void *ctx )
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{
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free( ctx );
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}
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const cipher_info_t aes_128_cbc_info = {
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.type = POLARSSL_CIPHER_AES_128_CBC,
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.cipher = POLARSSL_CIPHER_ID_AES,
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.mode = POLARSSL_MODE_CBC,
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.key_length = 128,
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.name = "AES-128-CBC",
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.iv_size = 16,
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.block_size = 16,
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.cbc_func = aes_crypt_cbc_wrap,
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.setkey_enc_func = aes_setkey_enc_wrap,
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.setkey_dec_func = aes_setkey_dec_wrap,
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.ctx_alloc_func = aes_ctx_alloc,
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.ctx_free_func = aes_ctx_free
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};
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const cipher_info_t aes_192_cbc_info = {
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.type = POLARSSL_CIPHER_AES_192_CBC,
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.cipher = POLARSSL_CIPHER_ID_AES,
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.mode = POLARSSL_MODE_CBC,
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.key_length = 192,
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.name = "AES-192-CBC",
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.iv_size = 16,
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.block_size = 16,
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.cbc_func = aes_crypt_cbc_wrap,
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.setkey_enc_func = aes_setkey_enc_wrap,
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.setkey_dec_func = aes_setkey_dec_wrap,
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.ctx_alloc_func = aes_ctx_alloc,
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.ctx_free_func = aes_ctx_free
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};
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const cipher_info_t aes_256_cbc_info = {
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.type = POLARSSL_CIPHER_AES_256_CBC,
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.cipher = POLARSSL_CIPHER_ID_AES,
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.mode = POLARSSL_MODE_CBC,
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.key_length = 256,
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.name = "AES-256-CBC",
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.iv_size = 16,
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.block_size = 16,
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.cbc_func = aes_crypt_cbc_wrap,
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.setkey_enc_func = aes_setkey_enc_wrap,
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.setkey_dec_func = aes_setkey_dec_wrap,
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.ctx_alloc_func = aes_ctx_alloc,
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.ctx_free_func = aes_ctx_free
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};
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#endif
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#if defined(POLARSSL_CAMELLIA_C)
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int camellia_crypt_cbc_wrap( void *ctx, operation_t operation, int length,
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unsigned char *iv, const unsigned char *input, unsigned char *output )
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{
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return camellia_crypt_cbc( (camellia_context *) ctx, operation, length, iv, input, output );
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}
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int camellia_setkey_dec_wrap( void *ctx, const unsigned char *key, int key_length )
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{
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return camellia_setkey_dec( (camellia_context *) ctx, key, key_length );
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}
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int camellia_setkey_enc_wrap( void *ctx, const unsigned char *key, int key_length )
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{
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return camellia_setkey_enc( (camellia_context *) ctx, key, key_length );
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}
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static void * camellia_ctx_alloc( void )
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{
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return malloc( sizeof( camellia_context ) );
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}
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static void camellia_ctx_free( void *ctx )
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{
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free( ctx );
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}
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const cipher_info_t camellia_128_cbc_info = {
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.type = POLARSSL_CIPHER_CAMELLIA_128_CBC,
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.cipher = POLARSSL_CIPHER_ID_CAMELLIA,
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.mode = POLARSSL_MODE_CBC,
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.key_length = 128,
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.name = "CAMELLIA-128-CBC",
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.iv_size = 16,
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.block_size = 16,
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.cbc_func = camellia_crypt_cbc_wrap,
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.setkey_enc_func = camellia_setkey_enc_wrap,
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.setkey_dec_func = camellia_setkey_dec_wrap,
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.ctx_alloc_func = camellia_ctx_alloc,
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.ctx_free_func = camellia_ctx_free
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};
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const cipher_info_t camellia_192_cbc_info = {
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.type = POLARSSL_CIPHER_CAMELLIA_192_CBC,
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.cipher = POLARSSL_CIPHER_ID_CAMELLIA,
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.mode = POLARSSL_MODE_CBC,
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.key_length = 192,
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.name = "CAMELLIA-192-CBC",
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.iv_size = 16,
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.block_size = 16,
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.cbc_func = camellia_crypt_cbc_wrap,
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.setkey_enc_func = camellia_setkey_enc_wrap,
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.setkey_dec_func = camellia_setkey_dec_wrap,
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.ctx_alloc_func = camellia_ctx_alloc,
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.ctx_free_func = camellia_ctx_free
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};
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const cipher_info_t camellia_256_cbc_info = {
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.type = POLARSSL_CIPHER_CAMELLIA_256_CBC,
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.cipher = POLARSSL_CIPHER_ID_CAMELLIA,
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.mode = POLARSSL_MODE_CBC,
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.key_length = 256,
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.name = "CAMELLIA-256-CBC",
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.iv_size = 16,
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.block_size = 16,
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.cbc_func = camellia_crypt_cbc_wrap,
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.setkey_enc_func = camellia_setkey_enc_wrap,
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.setkey_dec_func = camellia_setkey_dec_wrap,
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.ctx_alloc_func = camellia_ctx_alloc,
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.ctx_free_func = camellia_ctx_free
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};
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#endif
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#if defined(POLARSSL_DES_C)
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int des_crypt_cbc_wrap( void *ctx, operation_t operation, int length,
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unsigned char *iv, const unsigned char *input, unsigned char *output )
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{
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return des_crypt_cbc( (des_context *) ctx, operation, length, iv, input, output );
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}
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int des3_crypt_cbc_wrap( void *ctx, operation_t operation, int length,
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unsigned char *iv, const unsigned char *input, unsigned char *output )
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{
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return des3_crypt_cbc( (des3_context *) ctx, operation, length, iv, input, output );
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}
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int des_setkey_dec_wrap( void *ctx, const unsigned char *key, int key_length )
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{
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return des_setkey_dec( (des_context *) ctx, key );
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}
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int des_setkey_enc_wrap( void *ctx, const unsigned char *key, int key_length )
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{
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return des_setkey_enc( (des_context *) ctx, key );
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}
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int des3_set2key_dec_wrap( void *ctx, const unsigned char *key, int key_length )
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{
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return des3_set2key_dec( (des3_context *) ctx, key );
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}
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int des3_set2key_enc_wrap( void *ctx, const unsigned char *key, int key_length )
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{
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return des3_set2key_enc( (des3_context *) ctx, key );
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}
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int des3_set3key_dec_wrap( void *ctx, const unsigned char *key, int key_length )
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{
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return des3_set3key_dec( (des3_context *) ctx, key );
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}
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int des3_set3key_enc_wrap( void *ctx, const unsigned char *key, int key_length )
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{
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return des3_set3key_enc( (des3_context *) ctx, key );
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}
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static void * des_ctx_alloc( void )
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{
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return malloc( sizeof( des_context ) );
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}
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static void * des3_ctx_alloc( void )
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{
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return malloc( sizeof( des3_context ) );
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}
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static void des_ctx_free( void *ctx )
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{
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free( ctx );
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}
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const cipher_info_t des_cbc_info = {
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.type = POLARSSL_CIPHER_DES_CBC,
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.cipher = POLARSSL_CIPHER_ID_DES,
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.mode = POLARSSL_MODE_CBC,
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.key_length = POLARSSL_KEY_LENGTH_DES,
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.name = "DES-CBC",
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.iv_size = 8,
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.block_size = 8,
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.cbc_func = des_crypt_cbc_wrap,
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.setkey_enc_func = des_setkey_enc_wrap,
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.setkey_dec_func = des_setkey_dec_wrap,
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.ctx_alloc_func = des_ctx_alloc,
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.ctx_free_func = des_ctx_free
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};
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const cipher_info_t des_ede_cbc_info = {
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.type = POLARSSL_CIPHER_DES_EDE_CBC,
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.cipher = POLARSSL_CIPHER_ID_DES,
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.mode = POLARSSL_MODE_CBC,
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.key_length = POLARSSL_KEY_LENGTH_DES_EDE,
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.name = "DES-EDE-CBC",
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.iv_size = 16,
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.block_size = 16,
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.cbc_func = des3_crypt_cbc_wrap,
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.setkey_enc_func = des3_set2key_enc_wrap,
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.setkey_dec_func = des3_set2key_dec_wrap,
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.ctx_alloc_func = des3_ctx_alloc,
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.ctx_free_func = des_ctx_free
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};
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const cipher_info_t des_ede3_cbc_info = {
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.type = POLARSSL_CIPHER_DES_EDE3_CBC,
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.cipher = POLARSSL_CIPHER_ID_DES,
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.mode = POLARSSL_MODE_CBC,
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.key_length = POLARSSL_KEY_LENGTH_DES_EDE3,
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.name = "DES-EDE3-CBC",
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.iv_size = 8,
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.block_size = 8,
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.cbc_func = des3_crypt_cbc_wrap,
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.setkey_enc_func = des3_set3key_enc_wrap,
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.setkey_dec_func = des3_set3key_dec_wrap,
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.ctx_alloc_func = des3_ctx_alloc,
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.ctx_free_func = des_ctx_free
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};
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#endif
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#endif
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