pcompress/crypto/aes/crypto_aes.h

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/*
* This file is a part of Pcompress, a chunked parallel multi-
* algorithm lossless compression and decompression program.
*
* Copyright (C) 2012 Moinak Ghosh. All rights reserved.
* Use is subject to license terms.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 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
* Lesser General Public License for more details.
*
* moinakg@belenix.org, http://moinakg.wordpress.com/
*
* This program includes partly-modified public domain source
* code from the LZMA SDK: http://www.7-zip.org/sdk.html
*/
#ifndef _AES_CRYPTO_H
#define _AES_CRYPTO_H
#include <utils.h>
#include <openssl/aes.h>
#ifdef _USE_PBK
#include <openssl/evp.h>
#endif
#include <openssl/opensslv.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifndef KEYLEN
#define KEYLEN 16
#endif
#define PBE_ROUNDS 100
typedef struct {
uint64_t nonce;
AES_KEY key;
uchar_t pkey[KEYLEN];
} aes_ctx_t;
int aes_init(aes_ctx_t *ctx, uchar_t *salt, int saltlen, uchar_t *pwd, int pwd_len,
uint64_t nonce, int enc);
int aes_encrypt(aes_ctx_t *ctx, uchar_t *plaintext, uchar_t *ciphertext, uint64_t len, uint64_t id);
int aes_decrypt(aes_ctx_t *ctx, uchar_t *ciphertext, uchar_t *plaintext, uint64_t len, uint64_t id);
uint64_t aes_nonce(aes_ctx_t *ctx);
void aes_clean_pkey(aes_ctx_t *ctx);
void aes_cleanup(aes_ctx_t *ctx);
#ifdef __cplusplus
}
#endif
#endif