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- /*
- * aes_cbc.h
- *
- * Header for AES Cipher Blobk Chaining Mode.
- *
- * David A. McGrew
- * Cisco Systems, Inc.
- *
- */
- /*
- *
- * Copyright (c) 2001-2006, Cisco Systems, Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 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.
- *
- * Neither the name of the Cisco Systems, Inc. nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "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
- * COPYRIGHT HOLDERS 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.
- *
- */
- #ifndef AES_CBC_H
- #define AES_CBC_H
- #include "aes.h"
- #include "cipher.h"
- typedef struct {
- v128_t state; /* cipher chaining state */
- v128_t previous; /* previous ciphertext block */
- uint8_t key[32];
- int key_len;
- aes_expanded_key_t expanded_key; /* the cipher key */
- } aes_cbc_ctx_t;
- err_status_t
- aes_cbc_set_key(aes_cbc_ctx_t *c,
- const unsigned char *key);
- err_status_t
- aes_cbc_encrypt(aes_cbc_ctx_t *c,
- unsigned char *buf,
- unsigned int *bytes_in_data);
- err_status_t
- aes_cbc_context_init(aes_cbc_ctx_t *c, const uint8_t *key,
- int key_len);
- err_status_t
- aes_cbc_set_iv(aes_cbc_ctx_t *c, void *iv, int direction);
- err_status_t
- aes_cbc_nist_encrypt(aes_cbc_ctx_t *c,
- unsigned char *data,
- unsigned int *bytes_in_data);
- err_status_t
- aes_cbc_nist_decrypt(aes_cbc_ctx_t *c,
- unsigned char *data,
- unsigned int *bytes_in_data);
- #endif /* AES_CBC_H */
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