--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-includes/sodium_compat/src/Core/SipHash.php Mon Oct 14 18:28:13 2019 +0200
@@ -0,0 +1,305 @@
+<?php
+
+if (class_exists('ParagonIE_Sodium_Core_SipHash', false)) {
+ return;
+}
+
+/**
+ * Class ParagonIE_SodiumCompat_Core_SipHash
+ *
+ * Only uses 32-bit arithmetic, while the original SipHash used 64-bit integers
+ */
+class ParagonIE_Sodium_Core_SipHash extends ParagonIE_Sodium_Core_Util
+{
+ /**
+ * @internal You should not use this directly from another application
+ *
+ * @param int[] $v
+ * @return int[]
+ */
+ public static function sipRound(array $v)
+ {
+ # v0 += v1;
+ list($v[0], $v[1]) = self::add(
+ array($v[0], $v[1]),
+ array($v[2], $v[3])
+ );
+
+ # v1=ROTL(v1,13);
+ list($v[2], $v[3]) = self::rotl_64($v[2], $v[3], 13);
+
+ # v1 ^= v0;
+ $v[2] ^= $v[0];
+ $v[3] ^= $v[1];
+
+ # v0=ROTL(v0,32);
+ list($v[0], $v[1]) = self::rotl_64((int) $v[0], (int) $v[1], 32);
+
+ # v2 += v3;
+ list($v[4], $v[5]) = self::add(
+ array($v[4], $v[5]),
+ array($v[6], $v[7])
+ );
+
+ # v3=ROTL(v3,16);
+ list($v[6], $v[7]) = self::rotl_64($v[6], $v[7], 16);
+
+ # v3 ^= v2;
+ $v[6] ^= $v[4];
+ $v[7] ^= $v[5];
+
+ # v0 += v3;
+ list($v[0], $v[1]) = self::add(
+ array((int) $v[0], (int) $v[1]),
+ array((int) $v[6], (int) $v[7])
+ );
+
+ # v3=ROTL(v3,21);
+ list($v[6], $v[7]) = self::rotl_64((int) $v[6], (int) $v[7], 21);
+
+ # v3 ^= v0;
+ $v[6] ^= $v[0];
+ $v[7] ^= $v[1];
+
+ # v2 += v1;
+ list($v[4], $v[5]) = self::add(
+ array((int) $v[4], (int) $v[5]),
+ array((int) $v[2], (int) $v[3])
+ );
+
+ # v1=ROTL(v1,17);
+ list($v[2], $v[3]) = self::rotl_64((int) $v[2], (int) $v[3], 17);
+
+ # v1 ^= v2;;
+ $v[2] ^= $v[4];
+ $v[3] ^= $v[5];
+
+ # v2=ROTL(v2,32)
+ list($v[4], $v[5]) = self::rotl_64((int) $v[4], (int) $v[5], 32);
+
+ return $v;
+ }
+
+ /**
+ * Add two 32 bit integers representing a 64-bit integer.
+ *
+ * @internal You should not use this directly from another application
+ *
+ * @param int[] $a
+ * @param int[] $b
+ * @return array<int, mixed>
+ */
+ public static function add(array $a, array $b)
+ {
+ /** @var int $x1 */
+ $x1 = $a[1] + $b[1];
+ /** @var int $c */
+ $c = $x1 >> 32; // Carry if ($a + $b) > 0xffffffff
+ /** @var int $x0 */
+ $x0 = $a[0] + $b[0] + $c;
+ return array(
+ $x0 & 0xffffffff,
+ $x1 & 0xffffffff
+ );
+ }
+
+ /**
+ * @internal You should not use this directly from another application
+ *
+ * @param int $int0
+ * @param int $int1
+ * @param int $c
+ * @return array<int, mixed>
+ */
+ public static function rotl_64($int0, $int1, $c)
+ {
+ $int0 &= 0xffffffff;
+ $int1 &= 0xffffffff;
+ $c &= 63;
+ if ($c === 32) {
+ return array($int1, $int0);
+ }
+ if ($c > 31) {
+ $tmp = $int1;
+ $int1 = $int0;
+ $int0 = $tmp;
+ $c &= 31;
+ }
+ if ($c === 0) {
+ return array($int0, $int1);
+ }
+ return array(
+ 0xffffffff & (
+ ($int0 << $c)
+ |
+ ($int1 >> (32 - $c))
+ ),
+ 0xffffffff & (
+ ($int1 << $c)
+ |
+ ($int0 >> (32 - $c))
+ ),
+ );
+ }
+
+ /**
+ * Implements Siphash-2-4 using only 32-bit numbers.
+ *
+ * When we split an int into two, the higher bits go to the lower index.
+ * e.g. 0xDEADBEEFAB10C92D becomes [
+ * 0 => 0xDEADBEEF,
+ * 1 => 0xAB10C92D
+ * ].
+ *
+ * @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(
+ 0x736f6d65, // 0
+ 0x70736575, // 1
+ 0x646f7261, // 2
+ 0x6e646f6d, // 3
+ 0x6c796765, // 4
+ 0x6e657261, // 5
+ 0x74656462, // 6
+ 0x79746573 // 7
+ );
+ // v0 => $v[0], $v[1]
+ // v1 => $v[2], $v[3]
+ // v2 => $v[4], $v[5]
+ // v3 => $v[6], $v[7]
+
+ # u64 k0 = LOAD64_LE( k );
+ # u64 k1 = LOAD64_LE( k + 8 );
+ $k = array(
+ self::load_4(self::substr($key, 4, 4)),
+ self::load_4(self::substr($key, 0, 4)),
+ self::load_4(self::substr($key, 12, 4)),
+ self::load_4(self::substr($key, 8, 4))
+ );
+ // k0 => $k[0], $k[1]
+ // k1 => $k[2], $k[3]
+
+ # b = ( ( u64 )inlen ) << 56;
+ $b = array(
+ $inlen << 24,
+ 0
+ );
+ // See docblock for why the 0th index gets the higher bits.
+
+ # v3 ^= k1;
+ $v[6] ^= $k[2];
+ $v[7] ^= $k[3];
+ # v2 ^= k0;
+ $v[4] ^= $k[0];
+ $v[5] ^= $k[1];
+ # v1 ^= k1;
+ $v[2] ^= $k[2];
+ $v[3] ^= $k[3];
+ # v0 ^= k0;
+ $v[0] ^= $k[0];
+ $v[1] ^= $k[1];
+
+ $left = $inlen;
+ # for ( ; in != end; in += 8 )
+ while ($left >= 8) {
+ # m = LOAD64_LE( in );
+ $m = array(
+ self::load_4(self::substr($in, 4, 4)),
+ self::load_4(self::substr($in, 0, 4))
+ );
+
+ # v3 ^= m;
+ $v[6] ^= $m[0];
+ $v[7] ^= $m[1];
+
+ # SIPROUND;
+ # SIPROUND;
+ $v = self::sipRound($v);
+ $v = self::sipRound($v);
+
+ # v0 ^= m;
+ $v[0] ^= $m[0];
+ $v[1] ^= $m[1];
+
+ $in = self::substr($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:
+ $b[0] |= self::chrToInt($in[6]) << 16;
+ case 6:
+ $b[0] |= self::chrToInt($in[5]) << 8;
+ case 5:
+ $b[0] |= self::chrToInt($in[4]);
+ case 4:
+ $b[1] |= self::chrToInt($in[3]) << 24;
+ case 3:
+ $b[1] |= self::chrToInt($in[2]) << 16;
+ case 2:
+ $b[1] |= self::chrToInt($in[1]) << 8;
+ case 1:
+ $b[1] |= self::chrToInt($in[0]);
+ case 0:
+ break;
+ }
+ // See docblock for why the 0th index gets the higher bits.
+
+ # v3 ^= b;
+ $v[6] ^= $b[0];
+ $v[7] ^= $b[1];
+
+ # SIPROUND;
+ # SIPROUND;
+ $v = self::sipRound($v);
+ $v = self::sipRound($v);
+
+ # v0 ^= b;
+ $v[0] ^= $b[0];
+ $v[1] ^= $b[1];
+
+ // Flip the lower 8 bits of v2 which is ($v[4], $v[5]) in our implementation
+ # v2 ^= 0xff;
+ $v[5] ^= 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 self::store32_le($v[1] ^ $v[3] ^ $v[5] ^ $v[7]) .
+ self::store32_le($v[0] ^ $v[2] ^ $v[4] ^ $v[6]);
+ }
+}