include/crypto/siphash.h

   1 /*
   2  * Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #ifndef OSSL_CRYPTO_SIPHASH_H
  11 # define OSSL_CRYPTO_SIPHASH_H
  12 # pragma once
  13
  14 # include <stddef.h>
  15
  16 # define SIPHASH_BLOCK_SIZE        8
  17 # define SIPHASH_KEY_SIZE         16
  18 # define SIPHASH_MIN_DIGEST_SIZE   8
  19 # define SIPHASH_MAX_DIGEST_SIZE  16
  20
  21 typedef struct siphash_st SIPHASH;
  22
  23 size_t SipHash_ctx_size(void);
  24 size_t SipHash_hash_size(SIPHASH *ctx);
  25 int SipHash_set_hash_size(SIPHASH *ctx, size_t hash_size);
  26 int SipHash_Init(SIPHASH *ctx, const unsigned char *k,
  27                  int crounds, int drounds);
  28 void SipHash_Update(SIPHASH *ctx, const unsigned char *in, size_t inlen);
  29 int SipHash_Final(SIPHASH *ctx, unsigned char *out, size_t outlen);
  30
  31 #endif