blowfish.h

Go to the documentation of this file.

/*
 *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
 *  SPDX-License-Identifier: Apache-2.0
 *
 *  Licensed under the Apache License, Version 2.0 (the "License"); you may
 *  not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *  This file is part of mbed TLS (https://tls.mbed.org)
 */
#ifndef MBEDTLS_BLOWFISH_H
#define MBEDTLS_BLOWFISH_H

#if !defined(MBEDTLS_CONFIG_FILE)
#include "config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif

#include <stddef.h>
#include <stdint.h>

#include "platform_util.h"

#define MBEDTLS_BLOWFISH_ENCRYPT     1
#define MBEDTLS_BLOWFISH_DECRYPT     0
#define MBEDTLS_BLOWFISH_MAX_KEY_BITS     448
#define MBEDTLS_BLOWFISH_MIN_KEY_BITS     32
#define MBEDTLS_BLOWFISH_ROUNDS      16         
#define MBEDTLS_BLOWFISH_BLOCKSIZE   8          /* Blowfish uses 64 bit blocks */

#if !defined(MBEDTLS_DEPRECATED_REMOVED)
#define MBEDTLS_ERR_BLOWFISH_INVALID_KEY_LENGTH   MBEDTLS_DEPRECATED_NUMERIC_CONSTANT( -0x0016 )
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
#define MBEDTLS_ERR_BLOWFISH_BAD_INPUT_DATA -0x0016 
#define MBEDTLS_ERR_BLOWFISH_INVALID_INPUT_LENGTH -0x0018 
/* MBEDTLS_ERR_BLOWFISH_HW_ACCEL_FAILED is deprecated and should not be used.
 */
#define MBEDTLS_ERR_BLOWFISH_HW_ACCEL_FAILED                   -0x0017  
#ifdef __cplusplus
extern "C" {
#endif

#if !defined(MBEDTLS_BLOWFISH_ALT)
// Regular implementation
//

typedef struct mbedtls_blowfish_context
{
    uint32_t P[MBEDTLS_BLOWFISH_ROUNDS + 2];    
    uint32_t S[4][256];                 
}
mbedtls_blowfish_context;

#else  /* MBEDTLS_BLOWFISH_ALT */
#include "blowfish_alt.h"
#endif /* MBEDTLS_BLOWFISH_ALT */

void mbedtls_blowfish_init( mbedtls_blowfish_context *ctx );

void mbedtls_blowfish_free( mbedtls_blowfish_context *ctx );

int mbedtls_blowfish_setkey( mbedtls_blowfish_context *ctx, const unsigned char *key,
                     unsigned int keybits );

int mbedtls_blowfish_crypt_ecb( mbedtls_blowfish_context *ctx,
                        int mode,
                        const unsigned char input[MBEDTLS_BLOWFISH_BLOCKSIZE],
                        unsigned char output[MBEDTLS_BLOWFISH_BLOCKSIZE] );

#if defined(MBEDTLS_CIPHER_MODE_CBC)

int mbedtls_blowfish_crypt_cbc( mbedtls_blowfish_context *ctx,
                        int mode,
                        size_t length,
                        unsigned char iv[MBEDTLS_BLOWFISH_BLOCKSIZE],
                        const unsigned char *input,
                        unsigned char *output );
#endif /* MBEDTLS_CIPHER_MODE_CBC */

#if defined(MBEDTLS_CIPHER_MODE_CFB)

int mbedtls_blowfish_crypt_cfb64( mbedtls_blowfish_context *ctx,
                          int mode,
                          size_t length,
                          size_t *iv_off,
                          unsigned char iv[MBEDTLS_BLOWFISH_BLOCKSIZE],
                          const unsigned char *input,
                          unsigned char *output );
#endif /*MBEDTLS_CIPHER_MODE_CFB */

#if defined(MBEDTLS_CIPHER_MODE_CTR)

int mbedtls_blowfish_crypt_ctr( mbedtls_blowfish_context *ctx,
                        size_t length,
                        size_t *nc_off,
                        unsigned char nonce_counter[MBEDTLS_BLOWFISH_BLOCKSIZE],
                        unsigned char stream_block[MBEDTLS_BLOWFISH_BLOCKSIZE],
                        const unsigned char *input,
                        unsigned char *output );
#endif /* MBEDTLS_CIPHER_MODE_CTR */

#ifdef __cplusplus
}
#endif

#endif /* blowfish.h */