src/basic/siphash24.h

   1 /* SPDX-License-Identifier: CC0-1.0 */
   2
   3 #pragma once
   4
   5 #include "forward.h"
   6
   7 struct siphash {
   8         uint64_t v0;
   9         uint64_t v1;
  10         uint64_t v2;
  11         uint64_t v3;
  12         uint64_t padding;
  13         size_t inlen;
  14 };
  15
  16 void siphash24_init(struct siphash *state, const uint8_t k[static 16]);
  17 void siphash24_compress(const void *in, size_t inlen, struct siphash *state);
  18 #define siphash24_compress_byte(byte, state) siphash24_compress((const uint8_t[]) { (byte) }, 1, (state))
  19 #define siphash24_compress_typesafe(in, state)                  \
  20         siphash24_compress(&(in), sizeof(typeof(in)), (state))
  21
  22 static inline void siphash24_compress_boolean(bool in, struct siphash *state) {
  23         siphash24_compress_byte(in, state);
  24 }
  25
  26 static inline void siphash24_compress_usec_t(usec_t in, struct siphash *state) {
  27         uint64_t u = htole64(in);
  28         siphash24_compress_typesafe(u, state);
  29 }
  30
  31 static inline void siphash24_compress_safe(const void *in, size_t inlen, struct siphash *state) {
  32         if (inlen == 0)
  33                 return;
  34
  35         siphash24_compress(in, inlen, state);
  36 }
  37
  38 void siphash24_compress_string(const char *in, struct siphash *state);
  39
  40 uint64_t siphash24_finalize(struct siphash *state);
  41
  42 uint64_t siphash24(const void *in, size_t inlen, const uint8_t k[static 16]);
  43
  44 uint64_t siphash24_string(const char *s, const uint8_t k[static 16]);