src/3rd_party/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 #if defined(__cplusplus)
  30 extern "C" {
  31 #endif
  32
  33   enum blake2b_constant
  34   {
  35     BLAKE2B_BLOCKBYTES = 128,
  36     BLAKE2B_OUTBYTES   = 64,
  37     BLAKE2B_KEYBYTES   = 64,
  38     BLAKE2B_SALTBYTES  = 16,
  39     BLAKE2B_PERSONALBYTES = 16
  40   };
  41
  42 #pragma pack(push, 1)
  43   typedef struct __blake2b_param
  44   {
  45     uint8_t  digest_length; // 1
  46     uint8_t  key_length;    // 2
  47     uint8_t  fanout;        // 3
  48     uint8_t  depth;         // 4
  49     uint32_t leaf_length;   // 8
  50     uint64_t node_offset;   // 16
  51     uint8_t  node_depth;    // 17
  52     uint8_t  inner_length;  // 18
  53     uint8_t  reserved[14];  // 32
  54     uint8_t  salt[BLAKE2B_SALTBYTES]; // 48
  55     uint8_t  personal[BLAKE2B_PERSONALBYTES];  // 64
  56   } blake2b_param;
  57
  58   ALIGN( 64 ) typedef struct __blake2b_state
  59   {
  60     uint64_t h[8];
  61     uint64_t t[2];
  62     uint64_t f[2];
  63     uint8_t  buf[2 * BLAKE2B_BLOCKBYTES];
  64     size_t   buflen;
  65     uint8_t  last_node;
  66   } blake2b_state;
  67 #pragma pack(pop)
  68
  69   // Streaming API
  70   int blake2b_init( blake2b_state *S, const uint8_t outlen );
  71   int blake2b_init_key( blake2b_state *S, const uint8_t outlen, const void *key, const uint8_t keylen );
  72   int blake2b_init_param( blake2b_state *S, const blake2b_param *P );
  73   int blake2b_update( blake2b_state *S, const uint8_t *in, uint64_t inlen );
  74   int blake2b_final( blake2b_state *S, uint8_t *out, uint8_t outlen );
  75
  76   // Simple API
  77   int blake2b( uint8_t *out, const void *in, const void *key, const uint8_t outlen, const uint64_t inlen, uint8_t keylen );
  78
  79   static inline int blake2( uint8_t *out, const void *in, const void *key, const uint8_t outlen, const uint64_t inlen, uint8_t keylen )
  80   {
  81     return blake2b( out, in, key, outlen, inlen, keylen );
  82   }
  83
  84 #if defined(__cplusplus)
  85 }
  86 #endif
  87
  88 #endif
  89