--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-includes/sodium_compat/src/Core32/Salsa20.php Mon Oct 14 18:28:13 2019 +0200
@@ -0,0 +1,306 @@
+<?php
+
+if (class_exists('ParagonIE_Sodium_Core32_Salsa20', false)) {
+ return;
+}
+
+/**
+ * Class ParagonIE_Sodium_Core32_Salsa20
+ */
+abstract class ParagonIE_Sodium_Core32_Salsa20 extends ParagonIE_Sodium_Core32_Util
+{
+ const ROUNDS = 20;
+
+ /**
+ * Calculate an salsa20 hash of a single block
+ *
+ * @internal You should not use this directly from another application
+ *
+ * @param string $in
+ * @param string $k
+ * @param string|null $c
+ * @return string
+ * @throws SodiumException
+ * @throws TypeError
+ */
+ public static function core_salsa20($in, $k, $c = null)
+ {
+ /**
+ * @var ParagonIE_Sodium_Core32_Int32 $x0
+ * @var ParagonIE_Sodium_Core32_Int32 $x1
+ * @var ParagonIE_Sodium_Core32_Int32 $x2
+ * @var ParagonIE_Sodium_Core32_Int32 $x3
+ * @var ParagonIE_Sodium_Core32_Int32 $x4
+ * @var ParagonIE_Sodium_Core32_Int32 $x5
+ * @var ParagonIE_Sodium_Core32_Int32 $x6
+ * @var ParagonIE_Sodium_Core32_Int32 $x7
+ * @var ParagonIE_Sodium_Core32_Int32 $x8
+ * @var ParagonIE_Sodium_Core32_Int32 $x9
+ * @var ParagonIE_Sodium_Core32_Int32 $x10
+ * @var ParagonIE_Sodium_Core32_Int32 $x11
+ * @var ParagonIE_Sodium_Core32_Int32 $x12
+ * @var ParagonIE_Sodium_Core32_Int32 $x13
+ * @var ParagonIE_Sodium_Core32_Int32 $x14
+ * @var ParagonIE_Sodium_Core32_Int32 $x15
+ * @var ParagonIE_Sodium_Core32_Int32 $j0
+ * @var ParagonIE_Sodium_Core32_Int32 $j1
+ * @var ParagonIE_Sodium_Core32_Int32 $j2
+ * @var ParagonIE_Sodium_Core32_Int32 $j3
+ * @var ParagonIE_Sodium_Core32_Int32 $j4
+ * @var ParagonIE_Sodium_Core32_Int32 $j5
+ * @var ParagonIE_Sodium_Core32_Int32 $j6
+ * @var ParagonIE_Sodium_Core32_Int32 $j7
+ * @var ParagonIE_Sodium_Core32_Int32 $j8
+ * @var ParagonIE_Sodium_Core32_Int32 $j9
+ * @var ParagonIE_Sodium_Core32_Int32 $j10
+ * @var ParagonIE_Sodium_Core32_Int32 $j11
+ * @var ParagonIE_Sodium_Core32_Int32 $j12
+ * @var ParagonIE_Sodium_Core32_Int32 $j13
+ * @var ParagonIE_Sodium_Core32_Int32 $j14
+ * @var ParagonIE_Sodium_Core32_Int32 $j15
+ */
+ if (self::strlen($k) < 32) {
+ throw new RangeException('Key must be 32 bytes long');
+ }
+ if ($c === null) {
+ $x0 = new ParagonIE_Sodium_Core32_Int32(array(0x6170, 0x7865));
+ $x5 = new ParagonIE_Sodium_Core32_Int32(array(0x3320, 0x646e));
+ $x10 = new ParagonIE_Sodium_Core32_Int32(array(0x7962, 0x2d32));
+ $x15 = new ParagonIE_Sodium_Core32_Int32(array(0x6b20, 0x6574));
+ } else {
+ $x0 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($c, 0, 4));
+ $x5 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($c, 4, 4));
+ $x10 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($c, 8, 4));
+ $x15 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($c, 12, 4));
+ }
+ $x1 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($k, 0, 4));
+ $x2 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($k, 4, 4));
+ $x3 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($k, 8, 4));
+ $x4 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($k, 12, 4));
+ $x6 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($in, 0, 4));
+ $x7 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($in, 4, 4));
+ $x8 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($in, 8, 4));
+ $x9 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($in, 12, 4));
+ $x11 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($k, 16, 4));
+ $x12 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($k, 20, 4));
+ $x13 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($k, 24, 4));
+ $x14 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($k, 28, 4));
+
+ $j0 = clone $x0;
+ $j1 = clone $x1;
+ $j2 = clone $x2;
+ $j3 = clone $x3;
+ $j4 = clone $x4;
+ $j5 = clone $x5;
+ $j6 = clone $x6;
+ $j7 = clone $x7;
+ $j8 = clone $x8;
+ $j9 = clone $x9;
+ $j10 = clone $x10;
+ $j11 = clone $x11;
+ $j12 = clone $x12;
+ $j13 = clone $x13;
+ $j14 = clone $x14;
+ $j15 = clone $x15;
+
+ for ($i = self::ROUNDS; $i > 0; $i -= 2) {
+ $x4 = $x4->xorInt32($x0->addInt32($x12)->rotateLeft(7));
+ $x8 = $x8->xorInt32($x4->addInt32($x0)->rotateLeft(9));
+ $x12 = $x12->xorInt32($x8->addInt32($x4)->rotateLeft(13));
+ $x0 = $x0->xorInt32($x12->addInt32($x8)->rotateLeft(18));
+
+ $x9 = $x9->xorInt32($x5->addInt32($x1)->rotateLeft(7));
+ $x13 = $x13->xorInt32($x9->addInt32($x5)->rotateLeft(9));
+ $x1 = $x1->xorInt32($x13->addInt32($x9)->rotateLeft(13));
+ $x5 = $x5->xorInt32($x1->addInt32($x13)->rotateLeft(18));
+
+ $x14 = $x14->xorInt32($x10->addInt32($x6)->rotateLeft(7));
+ $x2 = $x2->xorInt32($x14->addInt32($x10)->rotateLeft(9));
+ $x6 = $x6->xorInt32($x2->addInt32($x14)->rotateLeft(13));
+ $x10 = $x10->xorInt32($x6->addInt32($x2)->rotateLeft(18));
+
+ $x3 = $x3->xorInt32($x15->addInt32($x11)->rotateLeft(7));
+ $x7 = $x7->xorInt32($x3->addInt32($x15)->rotateLeft(9));
+ $x11 = $x11->xorInt32($x7->addInt32($x3)->rotateLeft(13));
+ $x15 = $x15->xorInt32($x11->addInt32($x7)->rotateLeft(18));
+
+ $x1 = $x1->xorInt32($x0->addInt32($x3)->rotateLeft(7));
+ $x2 = $x2->xorInt32($x1->addInt32($x0)->rotateLeft(9));
+ $x3 = $x3->xorInt32($x2->addInt32($x1)->rotateLeft(13));
+ $x0 = $x0->xorInt32($x3->addInt32($x2)->rotateLeft(18));
+
+ $x6 = $x6->xorInt32($x5->addInt32($x4)->rotateLeft(7));
+ $x7 = $x7->xorInt32($x6->addInt32($x5)->rotateLeft(9));
+ $x4 = $x4->xorInt32($x7->addInt32($x6)->rotateLeft(13));
+ $x5 = $x5->xorInt32($x4->addInt32($x7)->rotateLeft(18));
+
+ $x11 = $x11->xorInt32($x10->addInt32($x9)->rotateLeft(7));
+ $x8 = $x8->xorInt32($x11->addInt32($x10)->rotateLeft(9));
+ $x9 = $x9->xorInt32($x8->addInt32($x11)->rotateLeft(13));
+ $x10 = $x10->xorInt32($x9->addInt32($x8)->rotateLeft(18));
+
+ $x12 = $x12->xorInt32($x15->addInt32($x14)->rotateLeft(7));
+ $x13 = $x13->xorInt32($x12->addInt32($x15)->rotateLeft(9));
+ $x14 = $x14->xorInt32($x13->addInt32($x12)->rotateLeft(13));
+ $x15 = $x15->xorInt32($x14->addInt32($x13)->rotateLeft(18));
+ }
+
+ $x0 = $x0->addInt32($j0);
+ $x1 = $x1->addInt32($j1);
+ $x2 = $x2->addInt32($j2);
+ $x3 = $x3->addInt32($j3);
+ $x4 = $x4->addInt32($j4);
+ $x5 = $x5->addInt32($j5);
+ $x6 = $x6->addInt32($j6);
+ $x7 = $x7->addInt32($j7);
+ $x8 = $x8->addInt32($j8);
+ $x9 = $x9->addInt32($j9);
+ $x10 = $x10->addInt32($j10);
+ $x11 = $x11->addInt32($j11);
+ $x12 = $x12->addInt32($j12);
+ $x13 = $x13->addInt32($j13);
+ $x14 = $x14->addInt32($j14);
+ $x15 = $x15->addInt32($j15);
+
+ return $x0->toReverseString() .
+ $x1->toReverseString() .
+ $x2->toReverseString() .
+ $x3->toReverseString() .
+ $x4->toReverseString() .
+ $x5->toReverseString() .
+ $x6->toReverseString() .
+ $x7->toReverseString() .
+ $x8->toReverseString() .
+ $x9->toReverseString() .
+ $x10->toReverseString() .
+ $x11->toReverseString() .
+ $x12->toReverseString() .
+ $x13->toReverseString() .
+ $x14->toReverseString() .
+ $x15->toReverseString();
+ }
+
+ /**
+ * @internal You should not use this directly from another application
+ *
+ * @param int $len
+ * @param string $nonce
+ * @param string $key
+ * @return string
+ * @throws SodiumException
+ * @throws TypeError
+ */
+ public static function salsa20($len, $nonce, $key)
+ {
+ if (self::strlen($key) !== 32) {
+ throw new RangeException('Key must be 32 bytes long');
+ }
+ $kcopy = '' . $key;
+ $in = self::substr($nonce, 0, 8) . str_repeat("\0", 8);
+ $c = '';
+ while ($len >= 64) {
+ $c .= self::core_salsa20($in, $kcopy, null);
+ $u = 1;
+ // Internal counter.
+ for ($i = 8; $i < 16; ++$i) {
+ $u += self::chrToInt($in[$i]);
+ $in[$i] = self::intToChr($u & 0xff);
+ $u >>= 8;
+ }
+ $len -= 64;
+ }
+ if ($len > 0) {
+ $c .= self::substr(
+ self::core_salsa20($in, $kcopy, null),
+ 0,
+ $len
+ );
+ }
+ try {
+ ParagonIE_Sodium_Compat::memzero($kcopy);
+ } catch (SodiumException $ex) {
+ $kcopy = null;
+ }
+ return $c;
+ }
+
+ /**
+ * @internal You should not use this directly from another application
+ *
+ * @param string $m
+ * @param string $n
+ * @param int $ic
+ * @param string $k
+ * @return string
+ * @throws SodiumException
+ * @throws TypeError
+ */
+ public static function salsa20_xor_ic($m, $n, $ic, $k)
+ {
+ $mlen = self::strlen($m);
+ if ($mlen < 1) {
+ return '';
+ }
+ $kcopy = self::substr($k, 0, 32);
+ $in = self::substr($n, 0, 8);
+ // Initialize the counter
+ $in .= ParagonIE_Sodium_Core32_Util::store64_le($ic);
+
+ $c = '';
+ while ($mlen >= 64) {
+ $block = self::core_salsa20($in, $kcopy, null);
+ $c .= self::xorStrings(
+ self::substr($m, 0, 64),
+ self::substr($block, 0, 64)
+ );
+ $u = 1;
+ for ($i = 8; $i < 16; ++$i) {
+ $u += self::chrToInt($in[$i]);
+ $in[$i] = self::intToChr($u & 0xff);
+ $u >>= 8;
+ }
+
+ $mlen -= 64;
+ $m = self::substr($m, 64);
+ }
+
+ if ($mlen) {
+ $block = self::core_salsa20($in, $kcopy, null);
+ $c .= self::xorStrings(
+ self::substr($m, 0, $mlen),
+ self::substr($block, 0, $mlen)
+ );
+ }
+ try {
+ ParagonIE_Sodium_Compat::memzero($block);
+ ParagonIE_Sodium_Compat::memzero($kcopy);
+ } catch (SodiumException $ex) {
+ $block = null;
+ $kcopy = null;
+ }
+
+ return $c;
+ }
+
+ /**
+ * @internal You should not use this directly from another application
+ *
+ * @param string $message
+ * @param string $nonce
+ * @param string $key
+ * @return string
+ * @throws SodiumException
+ * @throws TypeError
+ */
+ public static function salsa20_xor($message, $nonce, $key)
+ {
+ return self::xorStrings(
+ $message,
+ self::salsa20(
+ self::strlen($message),
+ $nonce,
+ $key
+ )
+ );
+ }
+}