ParagonIE_Sodium_Core_BLAKE2b

12abstract class ParagonIE_Sodium_Core_BLAKE2b extends ParagonIE_Sodium_Core_Util13{14    /**15     * @var SplFixedArray16     */17    protected static $iv;18 19    /**20     * @var array<int, array<int, int>>21     */22    protected static $sigma = array(23        array(  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15),24        array( 14, 10,  4,  8,  9, 15, 13,  6,  1, 12,  0,  2, 11,  7,  5,  3),25        array( 11,  8, 12,  0,  5,  2, 15, 13, 10, 14,  3,  6,  7,  1,  9,  4),26        array(  7,  9,  3,  1, 13, 12, 11, 14,  2,  6,  5, 10,  4,  0, 15,  8),27        array(  9,  0,  5,  7,  2,  4, 10, 15, 14,  1, 11, 12,  6,  8,  3, 13),28        array(  2, 12,  6, 10,  0, 11,  8,  3,  4, 13,  7,  5, 15, 14,  1,  9),29        array( 12,  5,  1, 15, 14, 13,  4, 10,  0,  7,  6,  3,  9,  2,  8, 11),30        array( 13, 11,  7, 14, 12,  1,  3,  9,  5,  0, 15,  4,  8,  6,  2, 10),31        array(  6, 15, 14,  9, 11,  3,  0,  8, 12,  2, 13,  7,  1,  4, 10,  5),32        array( 10,  2,  8,  4,  7,  6,  1,  5, 15, 11,  9, 14,  3, 12, 13 , 0),33        array(  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15),34        array( 14, 10,  4,  8,  9, 15, 13,  6,  1, 12,  0,  2, 11,  7,  5,  3)35    );36 37    const BLOCKBYTES = 128;38    const OUTBYTES   = 64;39    const KEYBYTES   = 64;40 41    /**42     * Turn two 32-bit integers into a fixed array representing a 64-bit integer.43     *44     * @internal You should not use this directly from another application45     *46     * @param int $high47     * @param int $low48     * @return SplFixedArray49     * @psalm-suppress MixedAssignment50     */51    public static function new64($high, $low)52    {53        if (PHP_INT_SIZE === 4) {54            throw new SodiumException("Error, use 32-bit");55        }56        $i64 = new SplFixedArray(2);57        $i64[0] = $high & 0xffffffff;58        $i64[1] = $low & 0xffffffff;59        return $i64;60    }61 62    /**63     * Convert an arbitrary number into an SplFixedArray of two 32-bit integers64     * that represents a 64-bit integer.65     *66     * @internal You should not use this directly from another application67     *68     * @param int $num69     * @return SplFixedArray70     */71    protected static function to64($num)72    {73        list($hi, $lo) = self::numericTo64BitInteger($num);74        return self::new64($hi, $lo);75    }76 77    /**78     * Adds two 64-bit integers together, returning their sum as a SplFixedArray79     * containing two 32-bit integers (representing a 64-bit integer).80     *81     * @internal You should not use this directly from another application82     *83     * @param SplFixedArray $x84     * @param SplFixedArray $y85     * @return SplFixedArray86     * @psalm-suppress MixedArgument87     * @psalm-suppress MixedAssignment88     * @psalm-suppress MixedOperand89     */90    protected static function add64($x, $y)91    {