1 files changed, 400 insertions, 0 deletions

diff --git a/vendor/paragonie/sodium_compat/src/Core32/ChaCha20.php b/vendor/paragonie/sodium_compat/src/Core32/ChaCha20.php
new file mode 100644
index 0000000..6f8c0bf
--- /dev/null
+++ b/vendor/paragonie/sodium_compat/src/Core32/ChaCha20.php
@@ -0,0 +1,400 @@
+<?php
+
+if (class_exists('ParagonIE_Sodium_Core32_ChaCha20', false)) {
+    return;
+}
+
+/**
+ * Class ParagonIE_Sodium_Core32_ChaCha20
+ */
+class ParagonIE_Sodium_Core32_ChaCha20 extends ParagonIE_Sodium_Core32_Util
+{
+    /**
+     * The ChaCha20 quarter round function. Works on four 32-bit integers.
+     *
+     * @internal You should not use this directly from another application
+     *
+     * @param ParagonIE_Sodium_Core32_Int32 $a
+     * @param ParagonIE_Sodium_Core32_Int32 $b
+     * @param ParagonIE_Sodium_Core32_Int32 $c
+     * @param ParagonIE_Sodium_Core32_Int32 $d
+     * @return array<int, ParagonIE_Sodium_Core32_Int32>
+     * @throws SodiumException
+     * @throws TypeError
+     */
+    protected static function quarterRound(
+        ParagonIE_Sodium_Core32_Int32 $a,
+        ParagonIE_Sodium_Core32_Int32 $b,
+        ParagonIE_Sodium_Core32_Int32 $c,
+        ParagonIE_Sodium_Core32_Int32 $d
+    ) {
+        /** @var ParagonIE_Sodium_Core32_Int32 $a */
+        /** @var ParagonIE_Sodium_Core32_Int32 $b */
+        /** @var ParagonIE_Sodium_Core32_Int32 $c */
+        /** @var ParagonIE_Sodium_Core32_Int32 $d */
+
+        # a = PLUS(a,b); d = ROTATE(XOR(d,a),16);
+        $a = $a->addInt32($b);
+        $d = $d->xorInt32($a)->rotateLeft(16);
+
+        # c = PLUS(c,d); b = ROTATE(XOR(b,c),12);
+        $c = $c->addInt32($d);
+        $b = $b->xorInt32($c)->rotateLeft(12);
+
+        # a = PLUS(a,b); d = ROTATE(XOR(d,a), 8);
+        $a = $a->addInt32($b);
+        $d = $d->xorInt32($a)->rotateLeft(8);
+
+        # c = PLUS(c,d); b = ROTATE(XOR(b,c), 7);
+        $c = $c->addInt32($d);
+        $b = $b->xorInt32($c)->rotateLeft(7);
+
+        return array($a, $b, $c, $d);
+    }
+
+    /**
+     * @internal You should not use this directly from another application
+     *
+     * @param ParagonIE_Sodium_Core32_ChaCha20_Ctx $ctx
+     * @param string $message
+     *
+     * @return string
+     * @throws SodiumException
+     * @throws TypeError
+     */
+    public static function encryptBytes(
+        ParagonIE_Sodium_Core32_ChaCha20_Ctx $ctx,
+        $message = ''
+    ) {
+        $bytes = self::strlen($message);
+
+        /** @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 */
+
+        /*
+        j0 = ctx->input[0];
+        j1 = ctx->input[1];
+        j2 = ctx->input[2];
+        j3 = ctx->input[3];
+        j4 = ctx->input[4];
+        j5 = ctx->input[5];
+        j6 = ctx->input[6];
+        j7 = ctx->input[7];
+        j8 = ctx->input[8];
+        j9 = ctx->input[9];
+        j10 = ctx->input[10];
+        j11 = ctx->input[11];
+        j12 = ctx->input[12];
+        j13 = ctx->input[13];
+        j14 = ctx->input[14];
+        j15 = ctx->input[15];
+        */
+        /** @var ParagonIE_Sodium_Core32_Int32 $j0 */
+        $j0  = $ctx[0];
+        /** @var ParagonIE_Sodium_Core32_Int32 $j1 */
+        $j1  = $ctx[1];
+        /** @var ParagonIE_Sodium_Core32_Int32 $j2 */
+        $j2  = $ctx[2];
+        /** @var ParagonIE_Sodium_Core32_Int32 $j3 */
+        $j3  = $ctx[3];
+        /** @var ParagonIE_Sodium_Core32_Int32 $j4 */
+        $j4  = $ctx[4];
+        /** @var ParagonIE_Sodium_Core32_Int32 $j5 */
+        $j5  = $ctx[5];
+        /** @var ParagonIE_Sodium_Core32_Int32 $j6 */
+        $j6  = $ctx[6];
+        /** @var ParagonIE_Sodium_Core32_Int32 $j7 */
+        $j7  = $ctx[7];
+        /** @var ParagonIE_Sodium_Core32_Int32 $j8 */
+        $j8  = $ctx[8];
+        /** @var ParagonIE_Sodium_Core32_Int32 $j9 */
+        $j9  = $ctx[9];
+        /** @var ParagonIE_Sodium_Core32_Int32 $j10 */
+        $j10 = $ctx[10];
+        /** @var ParagonIE_Sodium_Core32_Int32 $j11 */
+        $j11 = $ctx[11];
+        /** @var ParagonIE_Sodium_Core32_Int32 $j12 */
+        $j12 = $ctx[12];
+        /** @var ParagonIE_Sodium_Core32_Int32 $j13 */
+        $j13 = $ctx[13];
+        /** @var ParagonIE_Sodium_Core32_Int32 $j14 */
+        $j14 = $ctx[14];
+        /** @var ParagonIE_Sodium_Core32_Int32 $j15 */
+        $j15 = $ctx[15];
+
+        $c = '';
+        for (;;) {
+            if ($bytes < 64) {
+                $message .= str_repeat("\x00", 64 - $bytes);
+            }
+
+            $x0 =  clone $j0;
+            $x1 =  clone $j1;
+            $x2 =  clone $j2;
+            $x3 =  clone $j3;
+            $x4 =  clone $j4;
+            $x5 =  clone $j5;
+            $x6 =  clone $j6;
+            $x7 =  clone $j7;
+            $x8 =  clone $j8;
+            $x9 =  clone $j9;
+            $x10 = clone $j10;
+            $x11 = clone $j11;
+            $x12 = clone $j12;
+            $x13 = clone $j13;
+            $x14 = clone $j14;
+            $x15 = clone $j15;
+
+            # for (i = 20; i > 0; i -= 2) {
+            for ($i = 20; $i > 0; $i -= 2) {
+                # QUARTERROUND( x0,  x4,  x8,  x12)
+                list($x0, $x4, $x8, $x12) = self::quarterRound($x0, $x4, $x8, $x12);
+
+                # QUARTERROUND( x1,  x5,  x9,  x13)
+                list($x1, $x5, $x9, $x13) = self::quarterRound($x1, $x5, $x9, $x13);
+
+                # QUARTERROUND( x2,  x6,  x10,  x14)
+                list($x2, $x6, $x10, $x14) = self::quarterRound($x2, $x6, $x10, $x14);
+
+                # QUARTERROUND( x3,  x7,  x11,  x15)
+                list($x3, $x7, $x11, $x15) = self::quarterRound($x3, $x7, $x11, $x15);
+
+                # QUARTERROUND( x0,  x5,  x10,  x15)
+                list($x0, $x5, $x10, $x15) = self::quarterRound($x0, $x5, $x10, $x15);
+
+                # QUARTERROUND( x1,  x6,  x11,  x12)
+                list($x1, $x6, $x11, $x12) = self::quarterRound($x1, $x6, $x11, $x12);
+
+                # QUARTERROUND( x2,  x7,  x8,  x13)
+                list($x2, $x7, $x8, $x13) = self::quarterRound($x2, $x7, $x8, $x13);
+
+                # QUARTERROUND( x3,  x4,  x9,  x14)
+                list($x3, $x4, $x9, $x14) = self::quarterRound($x3, $x4, $x9, $x14);
+            }
+            /*
+            x0 = PLUS(x0, j0);
+            x1 = PLUS(x1, j1);
+            x2 = PLUS(x2, j2);
+            x3 = PLUS(x3, j3);
+            x4 = PLUS(x4, j4);
+            x5 = PLUS(x5, j5);
+            x6 = PLUS(x6, j6);
+            x7 = PLUS(x7, j7);
+            x8 = PLUS(x8, j8);
+            x9 = PLUS(x9, j9);
+            x10 = PLUS(x10, j10);
+            x11 = PLUS(x11, j11);
+            x12 = PLUS(x12, j12);
+            x13 = PLUS(x13, j13);
+            x14 = PLUS(x14, j14);
+            x15 = PLUS(x15, j15);
+            */
+            $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);
+
+            /*
+            x0 = XOR(x0, LOAD32_LE(m + 0));
+            x1 = XOR(x1, LOAD32_LE(m + 4));
+            x2 = XOR(x2, LOAD32_LE(m + 8));
+            x3 = XOR(x3, LOAD32_LE(m + 12));
+            x4 = XOR(x4, LOAD32_LE(m + 16));
+            x5 = XOR(x5, LOAD32_LE(m + 20));
+            x6 = XOR(x6, LOAD32_LE(m + 24));
+            x7 = XOR(x7, LOAD32_LE(m + 28));
+            x8 = XOR(x8, LOAD32_LE(m + 32));
+            x9 = XOR(x9, LOAD32_LE(m + 36));
+            x10 = XOR(x10, LOAD32_LE(m + 40));
+            x11 = XOR(x11, LOAD32_LE(m + 44));
+            x12 = XOR(x12, LOAD32_LE(m + 48));
+            x13 = XOR(x13, LOAD32_LE(m + 52));
+            x14 = XOR(x14, LOAD32_LE(m + 56));
+            x15 = XOR(x15, LOAD32_LE(m + 60));
+            */
+            $x0  =  $x0->xorInt32(ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($message,  0, 4)));
+            $x1  =  $x1->xorInt32(ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($message,  4, 4)));
+            $x2  =  $x2->xorInt32(ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($message,  8, 4)));
+            $x3  =  $x3->xorInt32(ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($message, 12, 4)));
+            $x4  =  $x4->xorInt32(ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($message, 16, 4)));
+            $x5  =  $x5->xorInt32(ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($message, 20, 4)));
+            $x6  =  $x6->xorInt32(ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($message, 24, 4)));
+            $x7  =  $x7->xorInt32(ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($message, 28, 4)));
+            $x8  =  $x8->xorInt32(ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($message, 32, 4)));
+            $x9  =  $x9->xorInt32(ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($message, 36, 4)));
+            $x10 = $x10->xorInt32(ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($message, 40, 4)));
+            $x11 = $x11->xorInt32(ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($message, 44, 4)));
+            $x12 = $x12->xorInt32(ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($message, 48, 4)));
+            $x13 = $x13->xorInt32(ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($message, 52, 4)));
+            $x14 = $x14->xorInt32(ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($message, 56, 4)));
+            $x15 = $x15->xorInt32(ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($message, 60, 4)));
+
+            /*
+                j12 = PLUSONE(j12);
+                if (!j12) {
+                    j13 = PLUSONE(j13);
+                }
+             */
+            /** @var ParagonIE_Sodium_Core32_Int32 $j12 */
+            $j12 = $j12->addInt(1);
+            if ($j12->limbs[0] === 0 && $j12->limbs[1] === 0) {
+                $j13 = $j13->addInt(1);
+            }
+
+            /*
+            STORE32_LE(c + 0, x0);
+            STORE32_LE(c + 4, x1);
+            STORE32_LE(c + 8, x2);
+            STORE32_LE(c + 12, x3);
+            STORE32_LE(c + 16, x4);
+            STORE32_LE(c + 20, x5);
+            STORE32_LE(c + 24, x6);
+            STORE32_LE(c + 28, x7);
+            STORE32_LE(c + 32, x8);
+            STORE32_LE(c + 36, x9);
+            STORE32_LE(c + 40, x10);
+            STORE32_LE(c + 44, x11);
+            STORE32_LE(c + 48, x12);
+            STORE32_LE(c + 52, x13);
+            STORE32_LE(c + 56, x14);
+            STORE32_LE(c + 60, x15);
+            */
+
+            $block = $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() .
+                $x15->toReverseString();
+
+            /* Partial block */
+            if ($bytes < 64) {
+                $c .= self::substr($block, 0, $bytes);
+                break;
+            }
+
+            /* Full block */
+            $c .= $block;
+            $bytes -= 64;
+            if ($bytes <= 0) {
+                break;
+            }
+            $message = self::substr($message, 64);
+        }
+        /* end for(;;) loop */
+
+        $ctx[12] = $j12;
+        $ctx[13] = $j13;
+        return $c;
+    }
+
+    /**
+     * @internal You should not use this directly from another application
+     *
+     * @param int $len
+     * @param string $nonce
+     * @param string $key
+     * @return string
+     * @throws SodiumException
+     * @throws TypeError
+     */
+    public static function stream($len = 64, $nonce = '', $key = '')
+    {
+        return self::encryptBytes(
+            new ParagonIE_Sodium_Core32_ChaCha20_Ctx($key, $nonce),
+            str_repeat("\x00", $len)
+        );
+    }
+
+    /**
+     * @internal You should not use this directly from another application
+     *
+     * @param int $len
+     * @param string $nonce
+     * @param string $key
+     * @return string
+     * @throws SodiumException
+     * @throws TypeError
+     */
+    public static function ietfStream($len, $nonce = '', $key = '')
+    {
+        return self::encryptBytes(
+            new ParagonIE_Sodium_Core32_ChaCha20_IetfCtx($key, $nonce),
+            str_repeat("\x00", $len)
+        );
+    }
+
+    /**
+     * @internal You should not use this directly from another application
+     *
+     * @param string $message
+     * @param string $nonce
+     * @param string $key
+     * @param string $ic
+     * @return string
+     * @throws SodiumException
+     * @throws TypeError
+     */
+    public static function ietfStreamXorIc($message, $nonce = '', $key = '', $ic = '')
+    {
+        return self::encryptBytes(
+            new ParagonIE_Sodium_Core32_ChaCha20_IetfCtx($key, $nonce, $ic),
+            $message
+        );
+    }
+
+    /**
+     * @internal You should not use this directly from another application
+     *
+     * @param string $message
+     * @param string $nonce
+     * @param string $key
+     * @param string $ic
+     * @return string
+     * @throws SodiumException
+     * @throws TypeError
+     */
+    public static function streamXorIc($message, $nonce = '', $key = '', $ic = '')
+    {
+        return self::encryptBytes(
+            new ParagonIE_Sodium_Core32_ChaCha20_Ctx($key, $nonce, $ic),
+            $message
+        );
+    }
+}