forked from cory/tildefriends
51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
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/*
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* Copyright 2017-2021 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#ifndef OSSL_CRYPTO_SIPHASH_H
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# define OSSL_CRYPTO_SIPHASH_H
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# pragma once
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# include <stddef.h>
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# define SIPHASH_BLOCK_SIZE 8
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# define SIPHASH_KEY_SIZE 16
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# define SIPHASH_MIN_DIGEST_SIZE 8
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# define SIPHASH_MAX_DIGEST_SIZE 16
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typedef struct siphash_st SIPHASH;
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size_t SipHash_ctx_size(void);
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size_t SipHash_hash_size(SIPHASH *ctx);
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int SipHash_set_hash_size(SIPHASH *ctx, size_t hash_size);
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int SipHash_Init(SIPHASH *ctx, const unsigned char *k,
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int crounds, int drounds);
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void SipHash_Update(SIPHASH *ctx, const unsigned char *in, size_t inlen);
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int SipHash_Final(SIPHASH *ctx, unsigned char *out, size_t outlen);
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/* Based on https://131002.net/siphash C reference implementation */
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struct siphash_st {
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uint64_t total_inlen;
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uint64_t v0;
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uint64_t v1;
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uint64_t v2;
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uint64_t v3;
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unsigned int len;
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unsigned int hash_size;
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unsigned int crounds;
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unsigned int drounds;
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unsigned char leavings[SIPHASH_BLOCK_SIZE];
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};
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/* default: SipHash-2-4 */
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# define SIPHASH_C_ROUNDS 2
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# define SIPHASH_D_ROUNDS 4
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#endif
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