1 files changed, 238 insertions, 0 deletions

diff --git a/vendor/paragonie/sodium_compat/src/Core32/SipHash.php b/vendor/paragonie/sodium_compat/src/Core32/SipHash.php
new file mode 100644
index 0000000..079946d
--- /dev/null
+++ b/vendor/paragonie/sodium_compat/src/Core32/SipHash.php
@@ -0,0 +1,238 @@
+<?php
+
+if (class_exists('ParagonIE_Sodium_Core32_SipHash', false)) {
+    return;
+}
+
+/**
+ * Class ParagonIE_SodiumCompat_Core32_SipHash
+ *
+ * Only uses 32-bit arithmetic, while the original SipHash used 64-bit integers
+ */
+class ParagonIE_Sodium_Core32_SipHash extends ParagonIE_Sodium_Core32_Util
+{
+    /**
+     * @internal You should not use this directly from another application
+     *
+     * @param array<int, ParagonIE_Sodium_Core32_Int64> $v
+     * @return array<int, ParagonIE_Sodium_Core32_Int64>
+     */
+    public static function sipRound(array $v)
+    {
+        # v0 += v1;
+        $v[0] = $v[0]->addInt64($v[1]);
+
+        # v1 = ROTL(v1, 13);
+        $v[1] = $v[1]->rotateLeft(13);
+
+        #  v1 ^= v0;
+        $v[1] = $v[1]->xorInt64($v[0]);
+
+        #  v0=ROTL(v0,32);
+        $v[0] = $v[0]->rotateLeft(32);
+
+        # v2 += v3;
+        $v[2] = $v[2]->addInt64($v[3]);
+
+        # v3=ROTL(v3,16);
+        $v[3] = $v[3]->rotateLeft(16);
+
+        #  v3 ^= v2;
+        $v[3] = $v[3]->xorInt64($v[2]);
+
+        # v0 += v3;
+        $v[0] = $v[0]->addInt64($v[3]);
+
+        # v3=ROTL(v3,21);
+        $v[3] = $v[3]->rotateLeft(21);
+
+        # v3 ^= v0;
+        $v[3] = $v[3]->xorInt64($v[0]);
+
+        # v2 += v1;
+        $v[2] = $v[2]->addInt64($v[1]);
+
+        # v1=ROTL(v1,17);
+        $v[1] = $v[1]->rotateLeft(17);
+
+        #  v1 ^= v2;
+        $v[1] = $v[1]->xorInt64($v[2]);
+
+        # v2=ROTL(v2,32)
+        $v[2] = $v[2]->rotateLeft(32);
+
+        return $v;
+    }
+
+    /**
+     * @internal You should not use this directly from another application
+     *
+     * @param string $in
+     * @param string $key
+     * @return string
+     * @throws SodiumException
+     * @throws TypeError
+     */
+    public static function sipHash24($in, $key)
+    {
+        $inlen = self::strlen($in);
+
+        # /* "somepseudorandomlygeneratedbytes" */
+        # u64 v0 = 0x736f6d6570736575ULL;
+        # u64 v1 = 0x646f72616e646f6dULL;
+        # u64 v2 = 0x6c7967656e657261ULL;
+        # u64 v3 = 0x7465646279746573ULL;
+        $v = array(
+            new ParagonIE_Sodium_Core32_Int64(
+                array(0x736f, 0x6d65, 0x7073, 0x6575)
+            ),
+            new ParagonIE_Sodium_Core32_Int64(
+                array(0x646f, 0x7261, 0x6e64, 0x6f6d)
+            ),
+            new ParagonIE_Sodium_Core32_Int64(
+                array(0x6c79, 0x6765, 0x6e65, 0x7261)
+            ),
+            new ParagonIE_Sodium_Core32_Int64(
+                array(0x7465, 0x6462, 0x7974, 0x6573)
+            )
+        );
+
+        # u64 k0 = LOAD64_LE( k );
+        # u64 k1 = LOAD64_LE( k + 8 );
+        $k = array(
+            ParagonIE_Sodium_Core32_Int64::fromReverseString(
+                self::substr($key, 0, 8)
+            ),
+            ParagonIE_Sodium_Core32_Int64::fromReverseString(
+                self::substr($key, 8, 8)
+            )
+        );
+
+        # b = ( ( u64 )inlen ) << 56;
+        $b = new ParagonIE_Sodium_Core32_Int64(
+            array(($inlen << 8) & 0xffff, 0, 0, 0)
+        );
+
+        # v3 ^= k1;
+        $v[3] = $v[3]->xorInt64($k[1]);
+        # v2 ^= k0;
+        $v[2] = $v[2]->xorInt64($k[0]);
+        # v1 ^= k1;
+        $v[1] = $v[1]->xorInt64($k[1]);
+        # v0 ^= k0;
+        $v[0] = $v[0]->xorInt64($k[0]);
+
+        $left = $inlen;
+        # for ( ; in != end; in += 8 )
+        while ($left >= 8) {
+            # m = LOAD64_LE( in );
+            $m = ParagonIE_Sodium_Core32_Int64::fromReverseString(
+                self::substr($in, 0, 8)
+            );
+
+            # v3 ^= m;
+            $v[3] = $v[3]->xorInt64($m);
+
+            # SIPROUND;
+            # SIPROUND;
+            $v = self::sipRound($v);
+            $v = self::sipRound($v);
+
+            # v0 ^= m;
+            $v[0] = $v[0]->xorInt64($m);
+
+            $in = self::substr($in, 8);
+            $left -= 8;
+        }
+
+        # switch( left )
+        #  {
+        #     case 7: b |= ( ( u64 )in[ 6] )  << 48;
+        #     case 6: b |= ( ( u64 )in[ 5] )  << 40;
+        #     case 5: b |= ( ( u64 )in[ 4] )  << 32;
+        #     case 4: b |= ( ( u64 )in[ 3] )  << 24;
+        #     case 3: b |= ( ( u64 )in[ 2] )  << 16;
+        #     case 2: b |= ( ( u64 )in[ 1] )  <<  8;
+        #     case 1: b |= ( ( u64 )in[ 0] ); break;
+        #     case 0: break;
+        # }
+        switch ($left) {
+            case 7:
+                $b = $b->orInt64(
+                    ParagonIE_Sodium_Core32_Int64::fromInts(
+                        0, self::chrToInt($in[6]) << 16
+                    )
+                );
+            case 6:
+                $b = $b->orInt64(
+                    ParagonIE_Sodium_Core32_Int64::fromInts(
+                        0, self::chrToInt($in[5]) << 8
+                    )
+                );
+            case 5:
+                $b = $b->orInt64(
+                    ParagonIE_Sodium_Core32_Int64::fromInts(
+                        0, self::chrToInt($in[4])
+                    )
+                );
+            case 4:
+                $b = $b->orInt64(
+                    ParagonIE_Sodium_Core32_Int64::fromInts(
+                        self::chrToInt($in[3]) << 24, 0
+                    )
+                );
+            case 3:
+                $b = $b->orInt64(
+                    ParagonIE_Sodium_Core32_Int64::fromInts(
+                        self::chrToInt($in[2]) << 16, 0
+                    )
+                );
+            case 2:
+                $b = $b->orInt64(
+                    ParagonIE_Sodium_Core32_Int64::fromInts(
+                        self::chrToInt($in[1]) << 8, 0
+                    )
+                );
+            case 1:
+                $b = $b->orInt64(
+                    ParagonIE_Sodium_Core32_Int64::fromInts(
+                        self::chrToInt($in[0]), 0
+                    )
+                );
+            case 0:
+                break;
+        }
+
+        # v3 ^= b;
+        $v[3] = $v[3]->xorInt64($b);
+
+        # SIPROUND;
+        # SIPROUND;
+        $v = self::sipRound($v);
+        $v = self::sipRound($v);
+
+        # v0 ^= b;
+        $v[0] = $v[0]->xorInt64($b);
+
+        // Flip the lower 8 bits of v2 which is ($v[4], $v[5]) in our implementation
+        # v2 ^= 0xff;
+        $v[2]->limbs[3] ^= 0xff;
+
+        # SIPROUND;
+        # SIPROUND;
+        # SIPROUND;
+        # SIPROUND;
+        $v = self::sipRound($v);
+        $v = self::sipRound($v);
+        $v = self::sipRound($v);
+        $v = self::sipRound($v);
+
+        # b = v0 ^ v1 ^ v2 ^ v3;
+        # STORE64_LE( out, b );
+        return $v[0]
+            ->xorInt64($v[1])
+            ->xorInt64($v[2])
+            ->xorInt64($v[3])
+            ->toReverseString();
+    }
+}