blake2b-ref.c File Reference

#include <stdint.h>
#include <string.h>
#include <stdio.h>
#include "blake2-impl.h"

Include dependency graph for blake2b-ref.c:

Go to the source code of this file.

Macros
#define	G(r, i, a, b, c, d)
#define	ROUND(r)

Functions
static int	blake2b_update (blake2b_state *S, const void *in, size_t inlen)
static void	blake2b_set_lastnode (blake2b_state *S)
static int	blake2b_is_lastblock (const blake2b_state *S)
static void	blake2b_set_lastblock (blake2b_state *S)
static void	blake2b_increment_counter (blake2b_state *S, const uint64_t inc)
static void	blake2b_init0 (blake2b_state *S)
static void	blake2b_init_param (blake2b_state *S, const blake2b_param *P)
static void	blake2b_init (blake2b_state *S, size_t outlen)
static void	blake2b_compress (blake2b_state *S, const uint8_t block[BLAKE2B_BLOCKBYTES])
static int	blake2b_final (blake2b_state *S, void *out, size_t outlen)
void	blake2b (void *out, size_t outlen, const void *in, size_t inlen)

Variables
static const uint64_t	blake2b_IV [8]
static const uint8_t	blake2b_sigma [12][16]

Macro Definition Documentation

G

#define G	(		r,
			i,
			a,
			b,
			c,
			d
	)

Value:

  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)

Definition at line 117 of file blake2b-ref.c.

ROUND

#define ROUND

(

r

)

Value:

  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)

Definition at line 129 of file blake2b-ref.c.

Function Documentation

blake2b()

void blake2b	(	void *	out,
		size_t	outlen,
		const void *	in,
		size_t	inlen
	)

Definition at line 237 of file blake2b-ref.c.

{
  blake2b_state S[1];
 
  blake2b_init( S, outlen );
 
  blake2b_update( S, ( const uint8_t * )in, inlen );
  blake2b_final( S, out, outlen );
}

Referenced by calc_superblock_checksum(), calc_thread_main(), calc_tree_checksum(), check_sector_csum(), check_superblock_checksum(), check_tree_checksum(), get_sector_csum(), and get_tree_checksum().

blake2b_compress()

static void blake2b_compress ( blake2b_state *  S, const uint8_t  block[BLAKE2B_BLOCKBYTES]  )

static

Definition at line 141 of file blake2b-ref.c.

{
  uint64_t m[16];
  uint64_t v[16];
  size_t 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] = blake2b_IV[4] ^ S->t[0];
  v[13] = blake2b_IV[5] ^ S->t[1];
  v[14] = blake2b_IV[6] ^ S->f[0];
  v[15] = blake2b_IV[7] ^ S->f[1];
 
  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];
  }
}

Referenced by blake2b_final(), and blake2b_update().

blake2b_final()

static int blake2b_final ( blake2b_state *  S, void *  out, size_t  outlen  )

static

Definition at line 212 of file blake2b-ref.c.

{
  uint8_t buffer[BLAKE2B_OUTBYTES] = {0};
  size_t i;
 
  if( out == NULL || outlen < S->outlen )
    return -1;
 
  if( blake2b_is_lastblock( S ) )
    return -1;
 
  blake2b_increment_counter( S, S->buflen );
  blake2b_set_lastblock( S );
  memset( S->buf + S->buflen, 0, BLAKE2B_BLOCKBYTES - S->buflen ); /* Padding */
  blake2b_compress( S, S->buf );
 
  for( i = 0; i < 8; ++i ) /* Output full hash to temp buffer */
    store64( buffer + sizeof( S->h[i] ) * i, S->h[i] );
 
  memcpy( out, buffer, S->outlen );
 
  return 0;
}

Referenced by blake2b().

blake2b_increment_counter()

static void blake2b_increment_counter ( blake2b_state *  S, const uint64_t  inc  )

static

Definition at line 66 of file blake2b-ref.c.

{
  S->t[0] += inc;
  S->t[1] += ( S->t[0] < inc );
}

Referenced by blake2b_final(), and blake2b_update().

blake2b_init()

static void blake2b_init ( blake2b_state *  S, size_t  outlen  )

static

Definition at line 97 of file blake2b-ref.c.

{
  blake2b_param P[1];
 
  P->digest_length = (uint8_t)outlen;
  P->key_length    = 0;
  P->fanout        = 1;
  P->depth         = 1;
  store32( &P->leaf_length, 0 );
  store32( &P->node_offset, 0 );
  store32( &P->xof_length, 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 ) );
 
  blake2b_init_param( S, P );
}

Referenced by blake2b().

blake2b_init0()

static void blake2b_init0 ( blake2b_state *  S )

static

Definition at line 72 of file blake2b-ref.c.

{
  size_t i;
  memset( S, 0, sizeof( blake2b_state ) );
 
  for( i = 0; i < 8; ++i ) S->h[i] = blake2b_IV[i];
}

Referenced by blake2b_init_param().

blake2b_init_param()

static void blake2b_init_param ( blake2b_state *  S, const blake2b_param *  P  )

static

Definition at line 81 of file blake2b-ref.c.

{
  const uint8_t *p = ( const uint8_t * )( P );
  size_t i;
 
  blake2b_init0( S );
 
  /* IV XOR ParamBlock */
  for( i = 0; i < 8; ++i )
    S->h[i] ^= load64( p + sizeof( S->h[i] ) * i );
 
  S->outlen = P->digest_length;
}

Referenced by blake2b_init().

blake2b_is_lastblock()

static int blake2b_is_lastblock ( const blake2b_state *  S )

static

Definition at line 54 of file blake2b-ref.c.

{
  return S->f[0] != 0;
}

Referenced by blake2b_final().

blake2b_set_lastblock()

static void blake2b_set_lastblock ( blake2b_state *  S )

static

Definition at line 59 of file blake2b-ref.c.

{
  if( S->last_node ) blake2b_set_lastnode( S );
 
  S->f[0] = (uint64_t)-1;
}

Referenced by blake2b_final().

blake2b_set_lastnode()

static void blake2b_set_lastnode ( blake2b_state *  S )

static

Definition at line 48 of file blake2b-ref.c.

{
  S->f[1] = (uint64_t)-1;
}

Referenced by blake2b_set_lastblock().

blake2b_update()

static int blake2b_update ( blake2b_state *  S, const void *  in, size_t  inlen  )

static

Definition at line 185 of file blake2b-ref.c.

{
  const unsigned char * in = (const unsigned char *)pin;
  if( inlen > 0 )
  {
    size_t left = S->buflen;
    size_t fill = BLAKE2B_BLOCKBYTES - left;
    if( inlen > fill )
    {
      S->buflen = 0;
      memcpy( S->buf + left, in, fill ); /* Fill buffer */
      blake2b_increment_counter( S, BLAKE2B_BLOCKBYTES );
      blake2b_compress( S, S->buf ); /* Compress */
      in += fill; inlen -= fill;
      while(inlen > BLAKE2B_BLOCKBYTES) {
        blake2b_increment_counter(S, BLAKE2B_BLOCKBYTES);
        blake2b_compress( S, in );
        in += BLAKE2B_BLOCKBYTES;
        inlen -= BLAKE2B_BLOCKBYTES;
      }
    }
    memcpy( S->buf + S->buflen, in, inlen );
    S->buflen += inlen;
  }
  return 0;
}

Referenced by blake2b().

Variable Documentation

blake2b_IV

const uint64_t blake2b_IV[8]

static

Initial value:

=
{
  0x6a09e667f3bcc908ULL, 0xbb67ae8584caa73bULL,
  0x3c6ef372fe94f82bULL, 0xa54ff53a5f1d36f1ULL,
  0x510e527fade682d1ULL, 0x9b05688c2b3e6c1fULL,
  0x1f83d9abfb41bd6bULL, 0x5be0cd19137e2179ULL
}

Definition at line 22 of file blake2b-ref.c.

Referenced by blake2b_compress(), and blake2b_init0().

blake2b_sigma

const uint8_t blake2b_sigma[12][16]

static

Initial value:

=
{
  {  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 }
}

Definition at line 30 of file blake2b-ref.c.