56 lines
1.8 KiB
C
56 lines
1.8 KiB
C
/*
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* This file is a part of Pcompress, a chunked parallel multi-
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* algorithm lossless compression and decompression program.
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*
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* Copyright (C) 2012-2013 Moinak Ghosh. All rights reserved.
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* Use is subject to license terms.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or (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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program.
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* If not, see <http://www.gnu.org/licenses/>.
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*
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* moinakg@belenix.org, http://moinakg.wordpress.com/
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*/
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#ifndef crypto_xsalsa20_H
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#define crypto_xsalsa20_H
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#include <inttypes.h>
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#include <utils.h>
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#define XSALSA20_CRYPTO_KEYBYTES 32
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#define XSALSA20_CRYPTO_NONCEBYTES 24
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct {
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unsigned char nonce[XSALSA20_CRYPTO_NONCEBYTES];
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uchar_t key[XSALSA20_CRYPTO_KEYBYTES];
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int keylen;
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uchar_t pkey[XSALSA20_CRYPTO_KEYBYTES];
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} salsa20_ctx_t;
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int salsa20_init(salsa20_ctx_t *ctx, uchar_t *salt, int saltlen, uchar_t *pwd, int pwd_len, uchar_t *nonce, int enc);
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int salsa20_encrypt(salsa20_ctx_t *ctx, uchar_t *plaintext, uchar_t *ciphertext, uint64_t len, uint64_t id);
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int salsa20_decrypt(salsa20_ctx_t *ctx, uchar_t *ciphertext, uchar_t *plaintext, uint64_t len, uint64_t id);
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uchar_t *salsa20_nonce(salsa20_ctx_t *ctx);
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void salsa20_clean_pkey(salsa20_ctx_t *ctx);
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void salsa20_cleanup(salsa20_ctx_t *ctx);
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#ifdef __cplusplus
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}
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#endif
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#endif
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