1 files changed, 92 insertions, 0 deletions
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/Curve448.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/Curve448.php
new file mode 100644
index 0000000..f4a4423
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Curves/Curve448.php
@@ -0,0 +1,92 @@
+<?php
+
+/**
+ * Curve448
+ *
+ * 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 Curve448 extends Montgomery
+{
+    public function __construct()
+    {
+        // 2^448 - 2^224 - 1
+        $this->setModulo(new BigInteger(
+            'FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE' .
+            'FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF',
+            16
+        ));
+        $this->a24 = $this->factory->newInteger(new BigInteger('39081'));
+        $this->p = [$this->factory->newInteger(new BigInteger(5))];
+        // 2^446 - 0x8335dc163bb124b65129c96fde933d8d723a70aadc873d6d54a7bb0d
+        $this->setOrder(new BigInteger(
+            '3FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF' .
+            '7CCA23E9C44EDB49AED63690216CC2728DC58F552378C292AB5844F3',
+            16
+        ));
+
+        /*
+        $this->setCoefficients(
+            new BigInteger('156326'), // a
+        );
+        $this->setBasePoint(
+            new BigInteger(5),
+            new BigInteger(
+                '355293926785568175264127502063783334808976399387714271831880898' .
+                '435169088786967410002932673765864550910142774147268105838985595290' .
+                '606362')
+        );
+        */
+    }
+
+    /**
+     * 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[0] = $d[0] & "\xFC";
+        $d = strrev($d);
+        $d |= "\x80";
+        $d = new BigInteger($d, 256);
+
+        return parent::multiplyPoint($p, $d);
+    }
+
+    /**
+     * Creates a random scalar multiplier
+     *
+     * @return BigInteger
+     */
+    public function createRandomMultiplier()
+    {
+        return BigInteger::random(446);
+    }
+
+    /**
+     * Performs range check
+     */
+    public function rangeCheck(BigInteger $x)
+    {
+        if ($x->getLength() > 448 || $x->isNegative()) {
+            throw new \RangeException('x must be a positive integer less than 446 bytes in length');
+        }
+    }
+}