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blake2-impl.h
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blake2-impl.h
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/*
BLAKE2 reference source code package - reference C implementations
Copyright 2012, Samuel Neves <[email protected]>. You may use this under the
terms of the CC0, the OpenSSL Licence, or the Apache Public License 2.0, at
your option. The terms of these licenses can be found at:
- CC0 1.0 Universal : https://creativecommons.org/publicdomain/zero/1.0
- OpenSSL license : https://www.openssl.org/source/license.html
- Apache 2.0 : https://www.apache.org/licenses/LICENSE-2.0
More information about the BLAKE2 hash function can be found at
https://blake2.net.
*/
#pragma once
#include <stdint.h>
#include <string.h>
#define NATIVE_LITTLE_ENDIAN
#if !defined(__cplusplus) && (!defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901L)
#if defined(_MSC_VER)
#define BLAKE2_INLINE __inline
#elif defined(__GNUC__)
#define BLAKE2_INLINE __inline__
#else
#define BLAKE2_INLINE
#endif
#else
#define BLAKE2_INLINE inline
#endif
static BLAKE2_INLINE uint32_t load32( const void *src )
{
#if defined(NATIVE_LITTLE_ENDIAN)
uint32_t w;
memcpy(&w, src, sizeof w);
return w;
#else
const uint8_t *p = ( const uint8_t * )src;
return (( uint32_t )( p[0] ) << 0) |
(( uint32_t )( p[1] ) << 8) |
(( uint32_t )( p[2] ) << 16) |
(( uint32_t )( p[3] ) << 24) ;
#endif
}
static BLAKE2_INLINE uint64_t load64( const void *src )
{
#if defined(NATIVE_LITTLE_ENDIAN)
uint64_t w;
memcpy(&w, src, sizeof w);
return w;
#else
const uint8_t *p = ( const uint8_t * )src;
return (( uint64_t )( p[0] ) << 0) |
(( uint64_t )( p[1] ) << 8) |
(( uint64_t )( p[2] ) << 16) |
(( uint64_t )( p[3] ) << 24) |
(( uint64_t )( p[4] ) << 32) |
(( uint64_t )( p[5] ) << 40) |
(( uint64_t )( p[6] ) << 48) |
(( uint64_t )( p[7] ) << 56) ;
#endif
}
static BLAKE2_INLINE uint16_t load16( const void *src )
{
#if defined(NATIVE_LITTLE_ENDIAN)
uint16_t w;
memcpy(&w, src, sizeof w);
return w;
#else
const uint8_t *p = ( const uint8_t * )src;
return ( uint16_t )((( uint32_t )( p[0] ) << 0) |
(( uint32_t )( p[1] ) << 8));
#endif
}
static BLAKE2_INLINE void store16( void *dst, uint16_t w )
{
#if defined(NATIVE_LITTLE_ENDIAN)
memcpy(dst, &w, sizeof w);
#else
uint8_t *p = ( uint8_t * )dst;
*p++ = ( uint8_t )w; w >>= 8;
*p++ = ( uint8_t )w;
#endif
}
static BLAKE2_INLINE void store32( void *dst, uint32_t w )
{
#if defined(NATIVE_LITTLE_ENDIAN)
memcpy(dst, &w, sizeof w);
#else
uint8_t *p = ( uint8_t * )dst;
p[0] = (uint8_t)(w >> 0);
p[1] = (uint8_t)(w >> 8);
p[2] = (uint8_t)(w >> 16);
p[3] = (uint8_t)(w >> 24);
#endif
}
static BLAKE2_INLINE void store64( void *dst, uint64_t w )
{
#if defined(NATIVE_LITTLE_ENDIAN)
memcpy(dst, &w, sizeof w);
#else
uint8_t *p = ( uint8_t * )dst;
p[0] = (uint8_t)(w >> 0);
p[1] = (uint8_t)(w >> 8);
p[2] = (uint8_t)(w >> 16);
p[3] = (uint8_t)(w >> 24);
p[4] = (uint8_t)(w >> 32);
p[5] = (uint8_t)(w >> 40);
p[6] = (uint8_t)(w >> 48);
p[7] = (uint8_t)(w >> 56);
#endif
}
static BLAKE2_INLINE uint64_t load48( const void *src )
{
const uint8_t *p = ( const uint8_t * )src;
return (( uint64_t )( p[0] ) << 0) |
(( uint64_t )( p[1] ) << 8) |
(( uint64_t )( p[2] ) << 16) |
(( uint64_t )( p[3] ) << 24) |
(( uint64_t )( p[4] ) << 32) |
(( uint64_t )( p[5] ) << 40) ;
}
static BLAKE2_INLINE void store48( void *dst, uint64_t w )
{
uint8_t *p = ( uint8_t * )dst;
p[0] = (uint8_t)(w >> 0);
p[1] = (uint8_t)(w >> 8);
p[2] = (uint8_t)(w >> 16);
p[3] = (uint8_t)(w >> 24);
p[4] = (uint8_t)(w >> 32);
p[5] = (uint8_t)(w >> 40);
}
static BLAKE2_INLINE uint32_t rotr32( const uint32_t w, const unsigned c )
{
return ( w >> c ) | ( w << ( 32 - c ) );
}
static BLAKE2_INLINE uint64_t rotr64( const uint64_t w, const unsigned c )
{
return ( w >> c ) | ( w << ( 64 - c ) );
}
#if defined(_MSC_VER)
#define BLAKE2_PACKED(x) __pragma(pack(push, 1)) x __pragma(pack(pop))
#else
#define BLAKE2_PACKED(x) x __attribute__((packed))
#endif
enum blake2b_constant
{
BLAKE2B_BLOCKBYTES = 128,
BLAKE2B_OUTBYTES = 64,
BLAKE2B_KEYBYTES = 64,
BLAKE2B_SALTBYTES = 16,
BLAKE2B_PERSONALBYTES = 16
};
typedef struct blake2b_state__
{
uint64_t h[8];
uint64_t t[2];
uint64_t f[2];
uint8_t buf[BLAKE2B_BLOCKBYTES];
size_t buflen;
size_t outlen;
uint8_t last_node;
} blake2b_state;
BLAKE2_PACKED(struct blake2b_param__
{
uint8_t digest_length; /* 1 */
uint8_t key_length; /* 2 */
uint8_t fanout; /* 3 */
uint8_t depth; /* 4 */
uint32_t leaf_length; /* 8 */
uint32_t node_offset; /* 12 */
uint32_t xof_length; /* 16 */
uint8_t node_depth; /* 17 */
uint8_t inner_length; /* 18 */
uint8_t reserved[14]; /* 32 */
uint8_t salt[BLAKE2B_SALTBYTES]; /* 48 */
uint8_t personal[BLAKE2B_PERSONALBYTES]; /* 64 */
});
typedef struct blake2b_param__ blake2b_param;