ParagonIE_Sodium_Core32_SipHash

12class ParagonIE_Sodium_Core32_SipHash extends ParagonIE_Sodium_Core32_Util13{14    /**15     * @internal You should not use this directly from another application16     *17     * @param array<int, ParagonIE_Sodium_Core32_Int64> $v18     * @return array<int, ParagonIE_Sodium_Core32_Int64>19     */20    public static function sipRound(array $v)21    {22        # v0 += v1;23        $v[0] = $v[0]->addInt64($v[1]);24 25        # v1 = ROTL(v1, 13);26        $v[1] = $v[1]->rotateLeft(13);27 28        #  v1 ^= v0;29        $v[1] = $v[1]->xorInt64($v[0]);30 31        #  v0=ROTL(v0,32);32        $v[0] = $v[0]->rotateLeft(32);33 34        # v2 += v3;35        $v[2] = $v[2]->addInt64($v[3]);36 37        # v3=ROTL(v3,16);38        $v[3] = $v[3]->rotateLeft(16);39 40        #  v3 ^= v2;41        $v[3] = $v[3]->xorInt64($v[2]);42 43        # v0 += v3;44        $v[0] = $v[0]->addInt64($v[3]);45 46        # v3=ROTL(v3,21);47        $v[3] = $v[3]->rotateLeft(21);48 49        # v3 ^= v0;50        $v[3] = $v[3]->xorInt64($v[0]);51 52        # v2 += v1;53        $v[2] = $v[2]->addInt64($v[1]);54 55        # v1=ROTL(v1,17);56        $v[1] = $v[1]->rotateLeft(17);57 58        #  v1 ^= v2;59        $v[1] = $v[1]->xorInt64($v[2]);60 61        # v2=ROTL(v2,32)62        $v[2] = $v[2]->rotateLeft(32);63 64        return $v;65    }66 67    /**68     * @internal You should not use this directly from another application69     *70     * @param string $in71     * @param string $key72     * @return string73     * @throws SodiumException74     * @throws TypeError75     */76    public static function sipHash24($in, $key)77    {78        $inlen = self::strlen($in);79 80        # /* "somepseudorandomlygeneratedbytes" */81        # u64 v0 = 0x736f6d6570736575ULL;82        # u64 v1 = 0x646f72616e646f6dULL;83        # u64 v2 = 0x6c7967656e657261ULL;84        # u64 v3 = 0x7465646279746573ULL;85        $v = array(86            new ParagonIE_Sodium_Core32_Int64(87                array(0x736f, 0x6d65, 0x7073, 0x6575)88            ),89            new ParagonIE_Sodium_Core32_Int64(90                array(0x646f, 0x7261, 0x6e64, 0x6f6d)91            ),