IABSD.fr/src/include/siphash.h

Branch : - branch - master - tag -

• Show log

  Commit

• Author : claudio
  Date : 2025-04-14 08:28:24
  Hash : fd3d56f0
  Message : siphash.h needs to include stddef.h for size_t and stdint.h for uint64_t and friends. OK tb@ miod@

• include/siphash.h

• /*-
   * Copyright (c) 2013 Andre Oppermann <andre@FreeBSD.org>
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. The name of the author may not be used to endorse or promote
   *    products derived from this software without specific prior written
   *    permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   *
   * $OpenBSD: siphash.h,v 1.5 2025/04/14 08:28:24 claudio Exp $
   */
  
  /*
   * SipHash is a family of pseudorandom functions (a.k.a. keyed hash functions)
   * optimized for speed on short messages returning a 64bit hash/digest value.
   *
   * The number of rounds is defined during the initialization:
   *  SipHash24_Init() for the fast and reasonable strong version
   *  SipHash48_Init() for the strong version (half as fast)
   *
   * struct SIPHASH_CTX ctx;
   * SipHash24_Init(&ctx);
   * SipHash_SetKey(&ctx, "16bytes long key");
   * SipHash_Update(&ctx, pointer_to_string, length_of_string);
   * SipHash_Final(output, &ctx);
   */
  
  #ifndef _SIPHASH_H_
  #define _SIPHASH_H_
  
  #include <stddef.h>
  #include <stdint.h>
  
  #define SIPHASH_BLOCK_LENGTH	 8
  #define SIPHASH_KEY_LENGTH	16
  #define SIPHASH_DIGEST_LENGTH	 8
  
  typedef struct _SIPHASH_CTX {
  	uint64_t	v[4];
  	uint8_t		buf[SIPHASH_BLOCK_LENGTH];
  	uint32_t	bytes;
  } SIPHASH_CTX;
  
  typedef struct {
  	uint64_t	k0;
  	uint64_t	k1;
  } SIPHASH_KEY;
  
  void		SipHash_Init(SIPHASH_CTX *, const SIPHASH_KEY *);
  void		SipHash_Update(SIPHASH_CTX *, int, int, const void *, size_t);
  uint64_t	SipHash_End(SIPHASH_CTX *, int, int);
  void		SipHash_Final(void *, SIPHASH_CTX *, int, int);
  uint64_t	SipHash(const SIPHASH_KEY *, int, int, const void *, size_t);
  
  #define SipHash24_Init(_c, _k)		SipHash_Init((_c), (_k))
  #define SipHash24_Update(_c, _p, _l)	SipHash_Update((_c), 2, 4, (_p), (_l))
  #define SipHash24_End(_d)		SipHash_End((_d), 2, 4)
  #define SipHash24_Final(_d, _c)		SipHash_Final((_d), (_c), 2, 4)
  #define SipHash24(_k, _p, _l)		SipHash((_k), 2, 4, (_p), (_l))
  
  #define SipHash48_Init(_c, _k)		SipHash_Init((_c), (_k))
  #define SipHash48_Update(_c, _p, _l)	SipHash_Update((_c), 4, 8, (_p), (_l))
  #define SipHash48_End(_d)		SipHash_End((_d), 4, 8)
  #define SipHash48_Final(_d, _c)		SipHash_Final((_d), (_c), 4, 8)
  #define SipHash48(_k, _p, _l)		SipHash((_k), 4, 8, (_p), (_l))
  
  #endif /* _SIPHASH_H_ */