From 19985dbb8c0aa66dc4bf7905abc1148de909097d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Anton=20Luka=20=C5=A0ijanec?= <anton@sijanec.eu>
Date: Tue, 11 Jan 2022 12:35:47 +0100
Subject: prvi-commit

---
 .../sodium_compat/src/Core32/HSalsa20.php          | 141 +++++++++++++++++++++
 1 file changed, 141 insertions(+)
 create mode 100644 vendor/paragonie/sodium_compat/src/Core32/HSalsa20.php

(limited to 'vendor/paragonie/sodium_compat/src/Core32/HSalsa20.php')

diff --git a/vendor/paragonie/sodium_compat/src/Core32/HSalsa20.php b/vendor/paragonie/sodium_compat/src/Core32/HSalsa20.php
new file mode 100644
index 0000000..39287f2
--- /dev/null
+++ b/vendor/paragonie/sodium_compat/src/Core32/HSalsa20.php
@@ -0,0 +1,141 @@
+<?php
+
+if (class_exists('ParagonIE_Sodium_Core32_HSalsa20', false)) {
+    return;
+}
+
+/**
+ * Class ParagonIE_Sodium_Core32_HSalsa20
+ */
+abstract class ParagonIE_Sodium_Core32_HSalsa20 extends ParagonIE_Sodium_Core32_Salsa20
+{
+    /**
+     * Calculate an hsalsa20 hash of a single block
+     *
+     * HSalsa20 doesn't have a counter and will never be used for more than
+     * one block (used to derive a subkey for xsalsa20).
+     *
+     * @internal You should not use this directly from another application
+     *
+     * @param string $in
+     * @param string $k
+     * @param string|null $c
+     * @return string
+     * @throws SodiumException
+     * @throws TypeError
+     */
+    public static function hsalsa20($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));
+
+        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));
+        }
+
+        return $x0->toReverseString() .
+            $x5->toReverseString() .
+            $x10->toReverseString() .
+            $x15->toReverseString() .
+            $x6->toReverseString() .
+            $x7->toReverseString() .
+            $x8->toReverseString() .
+            $x9->toReverseString();
+    }
+}
-- 
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