1 files changed, 152 insertions, 0 deletions
diff --git a/vendor/web-token/jwt-util-ecc/Point.php b/vendor/web-token/jwt-util-ecc/Point.php
new file mode 100644
index 0000000..bf73b2b
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+++ b/vendor/web-token/jwt-util-ecc/Point.php
@@ -0,0 +1,152 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014-2018 Spomky-Labs
+ *
+ * This software may be modified and distributed under the terms
+ * of the MIT license.  See the LICENSE file for details.
+ */
+
+namespace Jose\Component\Core\Util\Ecc;
+
+/**
+ * *********************************************************************
+ * Copyright (C) 2012 Matyas Danter.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES
+ * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ * ***********************************************************************
+ */
+
+/**
+ * @internal
+ */
+class Point
+{
+    /**
+     * @var \GMP
+     */
+    private $x;
+
+    /**
+     * @var \GMP
+     */
+    private $y;
+
+    /**
+     * @var \GMP
+     */
+    private $order;
+
+    /**
+     * @var bool
+     */
+    private $infinity = false;
+
+    /**
+     * Initialize a new instance.
+     *
+     * @throws \RuntimeException when either the curve does not contain the given coordinates or
+     *                           when order is not null and P(x, y) * order is not equal to infinity
+     */
+    private function __construct(\GMP $x, \GMP $y, \GMP $order, bool $infinity = false)
+    {
+        $this->x = $x;
+        $this->y = $y;
+        $this->order = $order;
+        $this->infinity = $infinity;
+    }
+
+    /**
+     * @return Point
+     */
+    public static function create(\GMP $x, \GMP $y, ?\GMP $order = null): self
+    {
+        return new self($x, $y, null === $order ? \gmp_init(0, 10) : $order);
+    }
+
+    /**
+     * @return Point
+     */
+    public static function infinity(): self
+    {
+        $zero = \gmp_init(0, 10);
+
+        return new self($zero, $zero, $zero, true);
+    }
+
+    public function isInfinity(): bool
+    {
+        return $this->infinity;
+    }
+
+    public function getOrder(): \GMP
+    {
+        return $this->order;
+    }
+
+    public function getX(): \GMP
+    {
+        return $this->x;
+    }
+
+    public function getY(): \GMP
+    {
+        return $this->y;
+    }
+
+    /**
+     * @param Point $a
+     * @param Point $b
+     */
+    public static function cswap(self $a, self $b, int $cond)
+    {
+        self::cswapGMP($a->x, $b->x, $cond);
+        self::cswapGMP($a->y, $b->y, $cond);
+        self::cswapGMP($a->order, $b->order, $cond);
+        self::cswapBoolean($a->infinity, $b->infinity, $cond);
+    }
+
+    private static function cswapBoolean(bool &$a, bool &$b, int $cond)
+    {
+        $sa = \gmp_init((int) ($a), 10);
+        $sb = \gmp_init((int) ($b), 10);
+
+        self::cswapGMP($sa, $sb, $cond);
+
+        $a = (bool) \gmp_strval($sa, 10);
+        $b = (bool) \gmp_strval($sb, 10);
+    }
+
+    private static function cswapGMP(\GMP &$sa, \GMP &$sb, int $cond)
+    {
+        $size = \max(\mb_strlen(\gmp_strval($sa, 2), '8bit'), \mb_strlen(\gmp_strval($sb, 2), '8bit'));
+        $mask = (string) (1 - (int) ($cond));
+        $mask = \str_pad('', $size, $mask, STR_PAD_LEFT);
+        $mask = \gmp_init($mask, 2);
+        $taA = Math::bitwiseAnd($sa, $mask);
+        $taB = Math::bitwiseAnd($sb, $mask);
+        $sa = Math::bitwiseXor(Math::bitwiseXor($sa, $sb), $taB);
+        $sb = Math::bitwiseXor(Math::bitwiseXor($sa, $sb), $taA);
+        $sa = Math::bitwiseXor(Math::bitwiseXor($sa, $sb), $taB);
+    }
+}