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Commits › a1668cd
Import blake2b.
Vsevolod Stakhov committed 11 years ago
commit a1668cd993e7c52a02bbf74a8118bc2de014c996
parent d5f66a7
5 files changed +628 -0
modified external/Makefile.am
@@ -281,3 +281,5 @@ libelf/native-elf-format.h:
	$(srcdir)/libelf/native-elf-format > libelf/native-elf-format.h



endif
+
+ 
SUBDIRS=	blake2
 

\ No newline at end of file
added external/blake2/Makefile.am
@@ -0,0 +1,9 @@
+ 
noinst_HEADERS=	blake2.h \
+ 
				blake2-impl.h
+
+ 
blake2_common_cflags=	-O3
+ 
libblake2_la_SOURCES=	blake2b-ref.c
+ 
libblake2_la_CFLAGS=	$(blake2_common_cflags) -shared
+ 
libblake2_static_la_SOURCES=	$(libblake2_la_SOURCES)
+ 
libblake2_static_la_CFLAGS=	$(blake2_common_cflags) -static
+ 
libblake2_static_la_LDFLAGS=	-all-static
 

\ No newline at end of file
added external/blake2/blake2-impl.h
@@ -0,0 +1,136 @@
+ 
/*
+ 
   BLAKE2 reference source code package - reference C implementations
+
+ 
   Written in 2012 by Samuel Neves <sneves@dei.uc.pt>
+
+ 
   To the extent possible under law, the author(s) have dedicated all copyright
+ 
   and related and neighboring rights to this software to the public domain
+ 
   worldwide. This software is distributed without any warranty.
+
+ 
   You should have received a copy of the CC0 Public Domain Dedication along with
+ 
   this software. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
+ 
*/
+ 
#pragma once
+ 
#ifndef __BLAKE2_IMPL_H__
+ 
#define __BLAKE2_IMPL_H__
+
+ 
#include <stdint.h>
+
+ 
static 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;
+ 
  uint32_t w = *p++;
+ 
  w |= ( uint32_t )( *p++ ) <<  8;
+ 
  w |= ( uint32_t )( *p++ ) << 16;
+ 
  w |= ( uint32_t )( *p++ ) << 24;
+ 
  return w;
+ 
#endif
+ 
}
+
+ 
static 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;
+ 
  uint64_t w = *p++;
+ 
  w |= ( uint64_t )( *p++ ) <<  8;
+ 
  w |= ( uint64_t )( *p++ ) << 16;
+ 
  w |= ( uint64_t )( *p++ ) << 24;
+ 
  w |= ( uint64_t )( *p++ ) << 32;
+ 
  w |= ( uint64_t )( *p++ ) << 40;
+ 
  w |= ( uint64_t )( *p++ ) << 48;
+ 
  w |= ( uint64_t )( *p++ ) << 56;
+ 
  return w;
+ 
#endif
+ 
}
+
+ 
static 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++ = ( uint8_t )w; w >>= 8;
+ 
  *p++ = ( uint8_t )w; w >>= 8;
+ 
  *p++ = ( uint8_t )w; w >>= 8;
+ 
  *p++ = ( uint8_t )w;
+ 
#endif
+ 
}
+
+ 
static 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++ = ( uint8_t )w; w >>= 8;
+ 
  *p++ = ( uint8_t )w; w >>= 8;
+ 
  *p++ = ( uint8_t )w; w >>= 8;
+ 
  *p++ = ( uint8_t )w; w >>= 8;
+ 
  *p++ = ( uint8_t )w; w >>= 8;
+ 
  *p++ = ( uint8_t )w; w >>= 8;
+ 
  *p++ = ( uint8_t )w; w >>= 8;
+ 
  *p++ = ( uint8_t )w;
+ 
#endif
+ 
}
+
+ 
static inline uint64_t load48( const void *src )
+ 
{
+ 
  const uint8_t *p = ( const uint8_t * )src;
+ 
  uint64_t w = *p++;
+ 
  w |= ( uint64_t )( *p++ ) <<  8;
+ 
  w |= ( uint64_t )( *p++ ) << 16;
+ 
  w |= ( uint64_t )( *p++ ) << 24;
+ 
  w |= ( uint64_t )( *p++ ) << 32;
+ 
  w |= ( uint64_t )( *p++ ) << 40;
+ 
  return w;
+ 
}
+
+ 
static inline void store48( void *dst, uint64_t w )
+ 
{
+ 
  uint8_t *p = ( uint8_t * )dst;
+ 
  *p++ = ( uint8_t )w; w >>= 8;
+ 
  *p++ = ( uint8_t )w; w >>= 8;
+ 
  *p++ = ( uint8_t )w; w >>= 8;
+ 
  *p++ = ( uint8_t )w; w >>= 8;
+ 
  *p++ = ( uint8_t )w; w >>= 8;
+ 
  *p++ = ( uint8_t )w;
+ 
}
+
+ 
static inline uint32_t rotl32( const uint32_t w, const unsigned c )
+ 
{
+ 
  return ( w << c ) | ( w >> ( 32 - c ) );
+ 
}
+
+ 
static inline uint64_t rotl64( const uint64_t w, const unsigned c )
+ 
{
+ 
  return ( w << c ) | ( w >> ( 64 - c ) );
+ 
}
+
+ 
static inline uint32_t rotr32( const uint32_t w, const unsigned c )
+ 
{
+ 
  return ( w >> c ) | ( w << ( 32 - c ) );
+ 
}
+
+ 
static inline uint64_t rotr64( const uint64_t w, const unsigned c )
+ 
{
+ 
  return ( w >> c ) | ( w << ( 64 - c ) );
+ 
}
+
+ 
/* prevents compiler optimizing out memset() */
+ 
static inline void secure_zero_memory( void *v, size_t n )
+ 
{
+ 
  volatile uint8_t *p = ( volatile uint8_t * )v;
+ 
  while( n-- ) *p++ = 0;
+ 
}
+
+ 
#endif
+
added external/blake2/blake2.h
@@ -0,0 +1,87 @@
+ 
/*
+ 
   BLAKE2 reference source code package - reference C implementations
+
+ 
   Written in 2012 by Samuel Neves <sneves@dei.uc.pt>
+
+ 
   To the extent possible under law, the author(s) have dedicated all copyright
+ 
   and related and neighboring rights to this software to the public domain
+ 
   worldwide. This software is distributed without any warranty.
+
+ 
   You should have received a copy of the CC0 Public Domain Dedication along with
+ 
   this software. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
+ 
*/
+ 
#pragma once
+ 
#ifndef __BLAKE2_H__
+ 
#define __BLAKE2_H__
+
+ 
#include <stddef.h>
+ 
#include <stdint.h>
+
+ 
#if defined(_MSC_VER)
+ 
#define ALIGN(x) __declspec(align(x))
+ 
#else
+ 
#define ALIGN(x) __attribute__((aligned(x)))
+ 
#endif
+
+ 
#if defined(__cplusplus)
+ 
extern "C" {
+ 
#endif
+
+
+ 
  enum blake2b_constant
+ 
  {
+ 
    BLAKE2B_BLOCKBYTES = 128,
+ 
    BLAKE2B_OUTBYTES   = 64,
+ 
    BLAKE2B_KEYBYTES   = 64,
+ 
    BLAKE2B_SALTBYTES  = 16,
+ 
    BLAKE2B_PERSONALBYTES = 16
+ 
  };
+
+ 
#pragma pack(push, 1)
+
+ 
  typedef 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
+ 
    uint64_t node_offset;   // 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
+ 
  } blake2b_param;
+
+ 
  ALIGN( 64 ) typedef struct __blake2b_state
+ 
  {
+ 
    uint64_t h[8];
+ 
    uint64_t t[2];
+ 
    uint64_t f[2];
+ 
    uint8_t  buf[2 * BLAKE2B_BLOCKBYTES];
+ 
    size_t   buflen;
+ 
    uint8_t  last_node;
+ 
  } blake2b_state;
+
+ 
#pragma pack(pop)
+
+ 
  int blake2b_init( blake2b_state *S, const uint8_t outlen );
+ 
  int blake2b_init_key( blake2b_state *S, const uint8_t outlen, const void *key, const uint8_t keylen );
+ 
  int blake2b_init_param( blake2b_state *S, const blake2b_param *P );
+ 
  int blake2b_update( blake2b_state *S, const uint8_t *in, uint64_t inlen );
+ 
  int blake2b_final( blake2b_state *S, uint8_t *out, uint8_t outlen );
+
+ 
  int blake2b( uint8_t *out, const void *in, const void *key, const uint8_t outlen, const uint64_t inlen, uint8_t keylen );
+
+ 
  static inline int blake2( uint8_t *out, const void *in, const void *key, const uint8_t outlen, const uint64_t inlen, uint8_t keylen )
+ 
  {
+ 
    return blake2b( out, in, key, outlen, inlen, keylen );
+ 
  }
+
+ 
#if defined(__cplusplus)
+ 
}
+ 
#endif
+
+ 
#endif
+
added external/blake2/blake2b-ref.c
@@ -0,0 +1,394 @@
+ 
/*
+ 
   BLAKE2 reference source code package - reference C implementations
+
+ 
   Written in 2012 by Samuel Neves <sneves@dei.uc.pt>
+
+ 
   To the extent possible under law, the author(s) have dedicated all copyright
+ 
   and related and neighboring rights to this software to the public domain
+ 
   worldwide. This software is distributed without any warranty.
+
+ 
   You should have received a copy of the CC0 Public Domain Dedication along with
+ 
   this software. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
+ 
*/
+
+ 
#include <stdint.h>
+ 
#include <string.h>
+ 
#include <stdio.h>
+
+ 
#include "blake2.h"
+ 
#include "blake2-impl.h"
+
+ 
static const uint64_t blake2b_IV[8] =
+ 
{
+ 
  0x6a09e667f3bcc908ULL, 0xbb67ae8584caa73bULL,
+ 
  0x3c6ef372fe94f82bULL, 0xa54ff53a5f1d36f1ULL,
+ 
  0x510e527fade682d1ULL, 0x9b05688c2b3e6c1fULL,
+ 
  0x1f83d9abfb41bd6bULL, 0x5be0cd19137e2179ULL
+ 
};
+
+ 
static const uint8_t blake2b_sigma[12][16] =
+ 
{
+ 
  {  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15 } ,
+ 
  { 14, 10,  4,  8,  9, 15, 13,  6,  1, 12,  0,  2, 11,  7,  5,  3 } ,
+ 
  { 11,  8, 12,  0,  5,  2, 15, 13, 10, 14,  3,  6,  7,  1,  9,  4 } ,
+ 
  {  7,  9,  3,  1, 13, 12, 11, 14,  2,  6,  5, 10,  4,  0, 15,  8 } ,
+ 
  {  9,  0,  5,  7,  2,  4, 10, 15, 14,  1, 11, 12,  6,  8,  3, 13 } ,
+ 
  {  2, 12,  6, 10,  0, 11,  8,  3,  4, 13,  7,  5, 15, 14,  1,  9 } ,
+ 
  { 12,  5,  1, 15, 14, 13,  4, 10,  0,  7,  6,  3,  9,  2,  8, 11 } ,
+ 
  { 13, 11,  7, 14, 12,  1,  3,  9,  5,  0, 15,  4,  8,  6,  2, 10 } ,
+ 
  {  6, 15, 14,  9, 11,  3,  0,  8, 12,  2, 13,  7,  1,  4, 10,  5 } ,
+ 
  { 10,  2,  8,  4,  7,  6,  1,  5, 15, 11,  9, 14,  3, 12, 13 , 0 } ,
+ 
  {  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15 } ,
+ 
  { 14, 10,  4,  8,  9, 15, 13,  6,  1, 12,  0,  2, 11,  7,  5,  3 }
+ 
};
+
+
+ 
static inline int blake2b_set_lastnode( blake2b_state *S )
+ 
{
+ 
  S->f[1] = ~0ULL;
+ 
  return 0;
+ 
}
+
+ 
static inline int blake2b_clear_lastnode( blake2b_state *S )
+ 
{
+ 
  S->f[1] = 0ULL;
+ 
  return 0;
+ 
}
+
+ 
/* Some helper functions, not necessarily useful */
+ 
static inline int blake2b_set_lastblock( blake2b_state *S )
+ 
{
+ 
  if( S->last_node ) blake2b_set_lastnode( S );
+
+ 
  S->f[0] = ~0ULL;
+ 
  return 0;
+ 
}
+
+ 
static inline int blake2b_clear_lastblock( blake2b_state *S )
+ 
{
+ 
  if( S->last_node ) blake2b_clear_lastnode( S );
+
+ 
  S->f[0] = 0ULL;
+ 
  return 0;
+ 
}
+
+ 
static inline int blake2b_increment_counter( blake2b_state *S, const uint64_t inc )
+ 
{
+ 
  S->t[0] += inc;
+ 
  S->t[1] += ( S->t[0] < inc );
+ 
  return 0;
+ 
}
+
+
+
+ 
// Parameter-related functions
+ 
static inline int blake2b_param_set_digest_length( blake2b_param *P, const uint8_t digest_length )
+ 
{
+ 
  P->digest_length = digest_length;
+ 
  return 0;
+ 
}
+
+ 
static inline int blake2b_param_set_fanout( blake2b_param *P, const uint8_t fanout )
+ 
{
+ 
  P->fanout = fanout;
+ 
  return 0;
+ 
}
+
+ 
static inline int blake2b_param_set_max_depth( blake2b_param *P, const uint8_t depth )
+ 
{
+ 
  P->depth = depth;
+ 
  return 0;
+ 
}
+
+ 
static inline int blake2b_param_set_leaf_length( blake2b_param *P, const uint32_t leaf_length )
+ 
{
+ 
  store32( &P->leaf_length, leaf_length );
+ 
  return 0;
+ 
}
+
+ 
static inline int blake2b_param_set_node_offset( blake2b_param *P, const uint64_t node_offset )
+ 
{
+ 
  store64( &P->node_offset, node_offset );
+ 
  return 0;
+ 
}
+
+ 
static inline int blake2b_param_set_node_depth( blake2b_param *P, const uint8_t node_depth )
+ 
{
+ 
  P->node_depth = node_depth;
+ 
  return 0;
+ 
}
+
+ 
static inline int blake2b_param_set_inner_length( blake2b_param *P, const uint8_t inner_length )
+ 
{
+ 
  P->inner_length = inner_length;
+ 
  return 0;
+ 
}
+
+ 
static inline int blake2b_param_set_salt( blake2b_param *P, const uint8_t salt[BLAKE2B_SALTBYTES] )
+ 
{
+ 
  memcpy( P->salt, salt, BLAKE2B_SALTBYTES );
+ 
  return 0;
+ 
}
+
+ 
static inline int blake2b_param_set_personal( blake2b_param *P, const uint8_t personal[BLAKE2B_PERSONALBYTES] )
+ 
{
+ 
  memcpy( P->personal, personal, BLAKE2B_PERSONALBYTES );
+ 
  return 0;
+ 
}
+
+ 
static inline int blake2b_init0( blake2b_state *S )
+ 
{
+ 
  memset( S, 0, sizeof( blake2b_state ) );
+
+ 
  for( int i = 0; i < 8; ++i ) S->h[i] = blake2b_IV[i];
+
+ 
  return 0;
+ 
}
+
+ 
/* init xors IV with input parameter block */
+ 
int blake2b_init_param( blake2b_state *S, const blake2b_param *P )
+ 
{
+ 
  blake2b_init0( S );
+ 
  const uint8_t *p = ( const uint8_t * )( P );
+
+ 
  /* IV XOR ParamBlock */
+ 
  for( size_t i = 0; i < 8; ++i )
+ 
    S->h[i] ^= load64( p + sizeof( S->h[i] ) * i );
+
+ 
  return 0;
+ 
}
+
+
+
+ 
int blake2b_init( blake2b_state *S, const uint8_t outlen )
+ 
{
+ 
  blake2b_param P[1];
+
+ 
  if ( ( !outlen ) || ( outlen > BLAKE2B_OUTBYTES ) ) return -1;
+
+ 
  P->digest_length = outlen;
+ 
  P->key_length    = 0;
+ 
  P->fanout        = 1;
+ 
  P->depth         = 1;
+ 
  store32( &P->leaf_length, 0 );
+ 
  store64( &P->node_offset, 0 );
+ 
  P->node_depth    = 0;
+ 
  P->inner_length  = 0;
+ 
  memset( P->reserved, 0, sizeof( P->reserved ) );
+ 
  memset( P->salt,     0, sizeof( P->salt ) );
+ 
  memset( P->personal, 0, sizeof( P->personal ) );
+ 
  return blake2b_init_param( S, P );
+ 
}
+
+
+ 
int blake2b_init_key( blake2b_state *S, const uint8_t outlen, const void *key, const uint8_t keylen )
+ 
{
+ 
  blake2b_param P[1];
+
+ 
  if ( ( !outlen ) || ( outlen > BLAKE2B_OUTBYTES ) ) return -1;
+
+ 
  if ( !key || !keylen || keylen > BLAKE2B_KEYBYTES ) return -1;
+
+ 
  P->digest_length = outlen;
+ 
  P->key_length    = keylen;
+ 
  P->fanout        = 1;
+ 
  P->depth         = 1;
+ 
  store32( &P->leaf_length, 0 );
+ 
  store64( &P->node_offset, 0 );
+ 
  P->node_depth    = 0;
+ 
  P->inner_length  = 0;
+ 
  memset( P->reserved, 0, sizeof( P->reserved ) );
+ 
  memset( P->salt,     0, sizeof( P->salt ) );
+ 
  memset( P->personal, 0, sizeof( P->personal ) );
+
+ 
  if( blake2b_init_param( S, P ) < 0 ) return -1;
+
+ 
  {
+ 
    uint8_t block[BLAKE2B_BLOCKBYTES];
+ 
    memset( block, 0, BLAKE2B_BLOCKBYTES );
+ 
    memcpy( block, key, keylen );
+ 
    blake2b_update( S, block, BLAKE2B_BLOCKBYTES );
+ 
    secure_zero_memory( block, BLAKE2B_BLOCKBYTES ); /* Burn the key from stack */
+ 
  }
+ 
  return 0;
+ 
}
+
+ 
static int blake2b_compress( blake2b_state *S, const uint8_t block[BLAKE2B_BLOCKBYTES] )
+ 
{
+ 
  uint64_t m[16];
+ 
  uint64_t v[16];
+ 
  int i;
+
+ 
  for( i = 0; i < 16; ++i )
+ 
    m[i] = load64( block + i * sizeof( m[i] ) );
+
+ 
  for( i = 0; i < 8; ++i )
+ 
    v[i] = S->h[i];
+
+ 
  v[ 8] = blake2b_IV[0];
+ 
  v[ 9] = blake2b_IV[1];
+ 
  v[10] = blake2b_IV[2];
+ 
  v[11] = blake2b_IV[3];
+ 
  v[12] = S->t[0] ^ blake2b_IV[4];
+ 
  v[13] = S->t[1] ^ blake2b_IV[5];
+ 
  v[14] = S->f[0] ^ blake2b_IV[6];
+ 
  v[15] = S->f[1] ^ blake2b_IV[7];
+ 
#define G(r,i,a,b,c,d) \
+ 
  do { \
+ 
    a = a + b + m[blake2b_sigma[r][2*i+0]]; \
+ 
    d = rotr64(d ^ a, 32); \
+ 
    c = c + d; \
+ 
    b = rotr64(b ^ c, 24); \
+ 
    a = a + b + m[blake2b_sigma[r][2*i+1]]; \
+ 
    d = rotr64(d ^ a, 16); \
+ 
    c = c + d; \
+ 
    b = rotr64(b ^ c, 63); \
+ 
  } while(0)
+ 
#define ROUND(r)  \
+ 
  do { \
+ 
    G(r,0,v[ 0],v[ 4],v[ 8],v[12]); \
+ 
    G(r,1,v[ 1],v[ 5],v[ 9],v[13]); \
+ 
    G(r,2,v[ 2],v[ 6],v[10],v[14]); \
+ 
    G(r,3,v[ 3],v[ 7],v[11],v[15]); \
+ 
    G(r,4,v[ 0],v[ 5],v[10],v[15]); \
+ 
    G(r,5,v[ 1],v[ 6],v[11],v[12]); \
+ 
    G(r,6,v[ 2],v[ 7],v[ 8],v[13]); \
+ 
    G(r,7,v[ 3],v[ 4],v[ 9],v[14]); \
+ 
  } while(0)
+ 
  ROUND( 0 );
+ 
  ROUND( 1 );
+ 
  ROUND( 2 );
+ 
  ROUND( 3 );
+ 
  ROUND( 4 );
+ 
  ROUND( 5 );
+ 
  ROUND( 6 );
+ 
  ROUND( 7 );
+ 
  ROUND( 8 );
+ 
  ROUND( 9 );
+ 
  ROUND( 10 );
+ 
  ROUND( 11 );
+
+ 
  for( i = 0; i < 8; ++i )
+ 
    S->h[i] = S->h[i] ^ v[i] ^ v[i + 8];
+
+ 
#undef G
+ 
#undef ROUND
+ 
  return 0;
+ 
}
+
+ 
/* inlen now in bytes */
+ 
int blake2b_update( blake2b_state *S, const uint8_t *in, uint64_t inlen )
+ 
{
+ 
  while( inlen > 0 )
+ 
  {
+ 
    size_t left = S->buflen;
+ 
    size_t fill = 2 * BLAKE2B_BLOCKBYTES - left;
+
+ 
    if( inlen > fill )
+ 
    {
+ 
      memcpy( S->buf + left, in, fill ); // Fill buffer
+ 
      S->buflen += fill;
+ 
      blake2b_increment_counter( S, BLAKE2B_BLOCKBYTES );
+ 
      blake2b_compress( S, S->buf ); // Compress
+ 
      memcpy( S->buf, S->buf + BLAKE2B_BLOCKBYTES, BLAKE2B_BLOCKBYTES ); // Shift buffer left
+ 
      S->buflen -= BLAKE2B_BLOCKBYTES;
+ 
      in += fill;
+ 
      inlen -= fill;
+ 
    }
+ 
    else // inlen <= fill
+ 
    {
+ 
      memcpy( S->buf + left, in, inlen );
+ 
      S->buflen += inlen; // Be lazy, do not compress
+ 
      in += inlen;
+ 
      inlen -= inlen;
+ 
    }
+ 
  }
+
+ 
  return 0;
+ 
}
+
+ 
/* Is this correct? */
+ 
int blake2b_final( blake2b_state *S, uint8_t *out, uint8_t outlen )
+ 
{
+ 
  uint8_t buffer[BLAKE2B_OUTBYTES] = {0};
+
+ 
  if( outlen > BLAKE2B_OUTBYTES )
+ 
    return -1;
+
+ 
  if( S->buflen > BLAKE2B_BLOCKBYTES )
+ 
  {
+ 
    blake2b_increment_counter( S, BLAKE2B_BLOCKBYTES );
+ 
    blake2b_compress( S, S->buf );
+ 
    S->buflen -= BLAKE2B_BLOCKBYTES;
+ 
    memcpy( S->buf, S->buf + BLAKE2B_BLOCKBYTES, S->buflen );
+ 
  }
+
+ 
  blake2b_increment_counter( S, S->buflen );
+ 
  blake2b_set_lastblock( S );
+ 
  memset( S->buf + S->buflen, 0, 2 * BLAKE2B_BLOCKBYTES - S->buflen ); /* Padding */
+ 
  blake2b_compress( S, S->buf );
+
+ 
  for( int i = 0; i < 8; ++i ) /* Output full hash to temp buffer */
+ 
    store64( buffer + sizeof( S->h[i] ) * i, S->h[i] );
+
+ 
  memcpy( out, buffer, outlen );
+ 
  return 0;
+ 
}
+
+ 
/* inlen, at least, should be uint64_t. Others can be size_t. */
+ 
int blake2b( uint8_t *out, const void *in, const void *key, const uint8_t outlen, const uint64_t inlen, uint8_t keylen )
+ 
{
+ 
  blake2b_state S[1];
+
+ 
  /* Verify parameters */
+ 
  if ( NULL == in ) return -1;
+
+ 
  if ( NULL == out ) return -1;
+
+ 
  if( NULL == key ) keylen = 0;
+
+ 
  if( keylen > 0 )
+ 
  {
+ 
    if( blake2b_init_key( S, outlen, key, keylen ) < 0 ) return -1;
+ 
  }
+ 
  else
+ 
  {
+ 
    if( blake2b_init( S, outlen ) < 0 ) return -1;
+ 
  }
+
+ 
  blake2b_update( S, ( const uint8_t * )in, inlen );
+ 
  blake2b_final( S, out, outlen );
+ 
  return 0;
+ 
}
+
+ 
#if defined(BLAKE2B_SELFTEST)
+ 
#include <string.h>
+ 
#include "blake2-kat.h"
+ 
int main( int argc, char **argv )
+ 
{
+ 
  uint8_t key[BLAKE2B_KEYBYTES];
+ 
  uint8_t buf[KAT_LENGTH];
+
+ 
  for( size_t i = 0; i < BLAKE2B_KEYBYTES; ++i )
+ 
    key[i] = ( uint8_t )i;
+
+ 
  for( size_t i = 0; i < KAT_LENGTH; ++i )
+ 
    buf[i] = ( uint8_t )i;
+
+ 
  for( size_t i = 0; i < KAT_LENGTH; ++i )
+ 
  {
+ 
    uint8_t hash[BLAKE2B_OUTBYTES];
+ 
    blake2b( hash, buf, key, BLAKE2B_OUTBYTES, i, BLAKE2B_KEYBYTES );
+
+ 
    if( 0 != memcmp( hash, blake2b_keyed_kat[i], BLAKE2B_OUTBYTES ) )
+ 
    {
+ 
      puts( "error" );
+ 
      return -1;
+ 
    }
+ 
  }
+
+ 
  puts( "ok" );
+ 
  return 0;
+ 
}
+ 
#endif
+