104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
/* arctwo.h
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The arctwo/rfc2268 block cipher.
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Copyright (C) 2004 Simon Josefsson
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Copyright (C) 2002, 2004, 2014 Niels Möller
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This file is part of GNU Nettle.
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GNU Nettle is free software: you can redistribute it and/or
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modify it under the terms of either:
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* the GNU Lesser General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at your
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option) any later version.
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or
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* the GNU General Public License as published by the Free
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Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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or both in parallel, as here.
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GNU Nettle 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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General Public License for more details.
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You should have received copies of the GNU General Public License and
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the GNU Lesser General Public License along with this program. If
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not, see http://www.gnu.org/licenses/.
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*/
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#ifndef NETTLE_ARCTWO_H_INCLUDED
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#define NETTLE_ARCTWO_H_INCLUDED
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#include "nettle-types.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Name mangling */
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#define arctwo_set_key nettle_arctwo_set_key
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#define arctwo_set_key_ekb nettle_arctwo_set_key_ekb
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#define arctwo_set_key_gutmann nettle_arctwo_set_key_gutmann
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#define arctwo40_set_key nettle_arctwo40_set_key
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#define arctwo64_set_key nettle_arctwo64_set_key
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#define arctwo128_set_key nettle_arctwo128_set_key
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#define arctwo128_set_key_gutmann nettle_arctwo128_set_key_gutmann
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#define arctwo_encrypt nettle_arctwo_encrypt
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#define arctwo_decrypt nettle_arctwo_decrypt
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#define ARCTWO_BLOCK_SIZE 8
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/* Variable key size from 1 byte to 128 bytes. */
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#define ARCTWO_MIN_KEY_SIZE 1
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#define ARCTWO_MAX_KEY_SIZE 128
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#define ARCTWO_KEY_SIZE 8
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struct arctwo_ctx
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{
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uint16_t S[64];
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};
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/* Key expansion function that takes the "effective key bits", 1-1024,
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as an explicit argument. 0 means maximum key bits. */
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void
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arctwo_set_key_ekb (struct arctwo_ctx *ctx,
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size_t length, const uint8_t * key, unsigned ekb);
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/* Equvivalent to arctwo_set_key_ekb, with ekb = 8 * length */
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void
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arctwo_set_key (struct arctwo_ctx *ctx, size_t length, const uint8_t *key);
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void
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arctwo40_set_key (struct arctwo_ctx *ctx, const uint8_t *key);
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void
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arctwo64_set_key (struct arctwo_ctx *ctx, const uint8_t *key);
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void
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arctwo128_set_key (struct arctwo_ctx *ctx, const uint8_t *key);
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/* Equvivalent to arctwo_set_key_ekb, with ekb = 1024 */
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void
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arctwo_set_key_gutmann (struct arctwo_ctx *ctx,
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size_t length, const uint8_t *key);
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void
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arctwo128_set_key_gutmann (struct arctwo_ctx *ctx,
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const uint8_t *key);
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void
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arctwo_encrypt (struct arctwo_ctx *ctx,
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size_t length, uint8_t *dst, const uint8_t *src);
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void
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arctwo_decrypt (struct arctwo_ctx *ctx,
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size_t length, uint8_t *dst, const uint8_t *src);
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#ifdef __cplusplus
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}
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#endif
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#endif /* NETTLE_ARCTWO_H_INCLUDED */
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