Function blake2s

freebsd/contrib/libb2/blake2s-ref.c:348–374

}

int blake2s( uint8_t *out, const void *in, const void *key, size_t outlen, size_t inlen, size_t keylen )
{
  blake2s_state S[1];

  /* Verify parameters */
  if ( NULL == in && inlen > 0 ) return -1;

  if ( NULL == out ) return -1;

  if ( NULL == key && keylen > 0 ) return -1;

  if( !outlen || outlen > BLAKE2S_OUTBYTES ) return -1;

  if( keylen > BLAKE2S_KEYBYTES ) return -1;

  if( keylen > 0 )
  {
    if( blake2s_init_key( S, outlen, key, keylen ) < 0 ) return -1;
  }
  else
  {
    if( blake2s_init( S, outlen ) < 0 ) return -1;
  }

  if( blake2s_update( S, ( uint8_t * )in, inlen ) < 0) return -1;
  return blake2s_final( S, out, outlen );
}