59 lines
1.6 KiB
C
Executable File
59 lines
1.6 KiB
C
Executable File
/* arcfour.h --- The arcfour stream cipher
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* Copyright (C) 2000-2005, 2009-2024 Free Software Foundation, Inc.
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*
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* This file is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of the
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* License, or (at your option) any later version.
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*
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* This file 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 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 License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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/* Code from Libgcrypt adapted for gnulib by Simon Josefsson. */
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#ifndef ARCFOUR_H
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#define ARCFOUR_H
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#include <stddef.h>
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define ARCFOUR_SBOX_SIZE 256
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typedef struct
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{
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char sbox[ARCFOUR_SBOX_SIZE];
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uint8_t idx_i, idx_j;
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} arcfour_context;
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/* Apply ARCFOUR stream to INBUF placing the result in OUTBUF, both of
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LENGTH size. CONTEXT must be initialized with arcfour_setkey
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before this function is called. */
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extern void
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arcfour_stream (arcfour_context * context,
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const char *inbuf, char *restrict outbuf, size_t length);
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/* Initialize CONTEXT using encryption KEY of KEYLEN bytes. KEY
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should be 40 bits (5 bytes) or longer. The KEY cannot be zero
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length. */
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extern void
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arcfour_setkey (arcfour_context * context, const char *key, size_t keylen);
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#ifdef __cplusplus
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}
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#endif
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#endif /* ARCFOUR_H */
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