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https://codeberg.org/madmo/speck.git
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56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
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/*
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Copyright (c) 2016, Moritz Bitsch
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef SPECK_H
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#define SPECK_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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/*
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* define speck type to use (one of SPECK_32_64, SPECK_64_128, SPECK_128_256)
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*/
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#define SPECK_32_64
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#ifdef SPECK_32_64
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#define SPECK_TYPE uint16_t
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#define SPECK_ROUNDS 22
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#define SPECK_KEY_LEN 4
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#endif
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#ifdef SPECK_64_128
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#define SPECK_TYPE uint32_t
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#define SPECK_ROUNDS 27
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#define SPECK_KEY_LEN 4
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#endif
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#ifdef SPECK_128_256
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#define SPECK_TYPE uint64_t
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#define SPECK_ROUNDS 34
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#define SPECK_KEY_LEN 4
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#endif
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void speck_expand(SPECK_TYPE const K[static 4], SPECK_TYPE S[static SPECK_ROUNDS]);
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void speck_encrypt(SPECK_TYPE const pt[static 2], SPECK_TYPE ct[static 2], SPECK_TYPE const K[static SPECK_ROUNDS]);
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void speck_decrypt(SPECK_TYPE const ct[static 2], SPECK_TYPE pt[static 2], SPECK_TYPE const K[static SPECK_ROUNDS]);
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#ifdef __cplusplus
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}
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#endif
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#endif
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