d8ed5ce9f1
Generalizes SHA-3 code for SHAKE support and uses GHC type-level literals to keep the output length variable.
47 lines
1.9 KiB
C
Executable File
47 lines
1.9 KiB
C
Executable File
/*
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* Copyright (C) 2012 Vincent Hanquez <vincent@snarc.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef CRYPTOHASH_SHA3_H
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#define CRYPTOHASH_SHA3_H
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#include <stdint.h>
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struct sha3_ctx
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{
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uint32_t bufindex;
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uint32_t bufsz;
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uint64_t state[25];
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uint8_t buf[0]; /* maximum SHAKE128 is 168 bytes, otherwise buffer can be decreased */
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};
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#define SHA3_CTX_SIZE sizeof(struct sha3_ctx)
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void cryptonite_sha3_init(struct sha3_ctx *ctx, uint32_t hashlen);
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void cryptonite_sha3_update(struct sha3_ctx *ctx, const uint8_t *data, uint32_t len);
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void cryptonite_sha3_finalize(struct sha3_ctx *ctx, uint32_t hashlen, uint8_t *out);
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void cryptonite_sha3_finalize_shake(struct sha3_ctx *ctx);
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void cryptonite_sha3_output(struct sha3_ctx *ctx, uint8_t *out, uint32_t len);
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#endif
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