1 files changed, 81 insertions, 0 deletions
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/Curve25519.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/Curve25519.php
new file mode 100644
index 0000000..0f3f4d8
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/Curve25519.php
@@ -0,0 +1,81 @@
+<?php
+
+/**
+ * Curve25519
+ *
+ * PHP version 5 and 7
+ *
+ * @author    Jim Wigginton <[email protected]>
+ * @copyright 2019 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://pear.php.net/package/Math_BigInteger
+ */
+
+namespace phpseclib3\Crypt\EC\Curves;
+
+use phpseclib3\Crypt\EC\BaseCurves\Montgomery;
+use phpseclib3\Math\BigInteger;
+
+class Curve25519 extends Montgomery
+{
+    public function __construct()
+    {
+        // 2^255 - 19
+        $this->setModulo(new BigInteger('7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFED', 16));
+        $this->a24 = $this->factory->newInteger(new BigInteger('121666'));
+        $this->p = [$this->factory->newInteger(new BigInteger(9))];
+        // 2^252 + 0x14def9dea2f79cd65812631a5cf5d3ed
+        $this->setOrder(new BigInteger('1000000000000000000000000000000014DEF9DEA2F79CD65812631A5CF5D3ED', 16));
+
+        /*
+        $this->setCoefficients(
+            new BigInteger('486662'), // a
+        );
+        $this->setBasePoint(
+            new BigInteger(9),
+            new BigInteger('14781619447589544791020593568409986887264606134616475288964881837755586237401')
+        );
+        */
+    }
+
+    /**
+     * Multiply a point on the curve by a scalar
+     *
+     * Modifies the scalar as described at https://tools.ietf.org/html/rfc7748#page-8
+     *
+     * @return array
+     */
+    public function multiplyPoint(array $p, BigInteger $d)
+    {
+        //$r = strrev(sodium_crypto_scalarmult($d->toBytes(), strrev($p[0]->toBytes())));
+        //return [$this->factory->newInteger(new BigInteger($r, 256))];
+
+        $d = $d->toBytes();
+        $d &= "\xF8" . str_repeat("\xFF", 30) . "\x7F";
+        $d = strrev($d);
+        $d |= "\x40";
+        $d = new BigInteger($d, -256);
+
+        return parent::multiplyPoint($p, $d);
+    }
+
+    /**
+     * Creates a random scalar multiplier
+     *
+     * @return BigInteger
+     */
+    public function createRandomMultiplier()
+    {
+        return BigInteger::random(256);
+    }
+
+    /**
+     * Performs range check
+     */
+    public function rangeCheck(BigInteger $x)
+    {
+        if ($x->getLength() > 256 || $x->isNegative()) {
+            throw new \RangeException('x must be a positive integer less than 256 bytes in length');
+        }
+    }
+}