src/3rd_party/blake2/include/blake2.h

   1 /*
   2    BLAKE2 reference source code package - reference C implementations
   3
   4    Written in 2012 by Samuel Neves <sneves@dei.uc.pt>
   5
   6    To the extent possible under law, the author(s) have dedicated all copyright
   7    and related and neighboring rights to this software to the public domain
   8    worldwide. This software is distributed without any warranty.
   9
  10    You should have received a copy of the CC0 Public Domain Dedication along with
  11    this software. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
  12 */
  13 #pragma once
  14 #ifndef __BLAKE2_H__
  15 #define __BLAKE2_H__
  16
  17 #include <stddef.h>
  18 #include <stdint.h>
  19
  20 #if defined(_MSC_VER)
  21 #define ALIGN(x) __declspec(align(x))
  22 #ifndef __cplusplus
  23 #define inline __inline
  24 #endif
  25 #else
  26 #define ALIGN(x) __attribute__((aligned(x)))
  27 #endif
  28
  29 namespace MUtils
  30 {
  31         namespace Hash
  32         {
  33                 namespace Internal
  34                 {
  35                         namespace Blake2Impl
  36                         {
  37                                 enum blake2b_constant
  38                                 {
  39                                         BLAKE2B_BLOCKBYTES = 128,
  40                                         BLAKE2B_OUTBYTES   = 64,
  41                                         BLAKE2B_KEYBYTES   = 64,
  42                                         BLAKE2B_SALTBYTES  = 16,
  43                                         BLAKE2B_PERSONALBYTES = 16
  44                                 };
  45
  46                                 #pragma pack(push, 1)
  47                                 typedef struct __blake2b_param
  48                                 {
  49                                         uint8_t  digest_length; // 1
  50                                         uint8_t  key_length;    // 2
  51                                         uint8_t  fanout;        // 3
  52                                         uint8_t  depth;         // 4
  53                                         uint32_t leaf_length;   // 8
  54                                         uint64_t node_offset;   // 16
  55                                         uint8_t  node_depth;    // 17
  56                                         uint8_t  inner_length;  // 18
  57                                         uint8_t  reserved[14];  // 32
  58                                         uint8_t  salt[BLAKE2B_SALTBYTES]; // 48
  59                                         uint8_t  personal[BLAKE2B_PERSONALBYTES];  // 64
  60                                 } blake2b_param;
  61
  62                                 ALIGN( 64 ) typedef struct __blake2b_state
  63                                 {
  64                                         uint64_t h[8];
  65                                         uint64_t t[2];
  66                                         uint64_t f[2];
  67                                         uint8_t  buf[2 * BLAKE2B_BLOCKBYTES];
  68                                         size_t   buflen;
  69                                         uint8_t  last_node;
  70                                 } blake2b_state;
  71                                 #pragma pack(pop)
  72
  73                                 // Streaming API
  74                                 int blake2b_init( blake2b_state *S, const uint8_t outlen );
  75                                 int blake2b_init_key( blake2b_state *S, const uint8_t outlen, const void *key, const uint8_t keylen );
  76                                 int blake2b_init_param( blake2b_state *S, const blake2b_param *P );
  77                                 int blake2b_update( blake2b_state *S, const uint8_t *in, uint64_t inlen );
  78                                 int blake2b_final( blake2b_state *S, uint8_t *out, uint8_t outlen );
  79
  80                                 // Simple API
  81                                 int blake2b( uint8_t *out, const void *in, const void *key, const uint8_t outlen, const uint64_t inlen, uint8_t keylen );
  82
  83                                 static inline int blake2( uint8_t *out, const void *in, const void *key, const uint8_t outlen, const uint64_t inlen, uint8_t keylen )
  84                                 {
  85                                         return blake2b( out, in, key, outlen, inlen, keylen );
  86                                 }
  87                         }
  88                 }
  89         }
  90 }
  91
  92 #endif
  93