1 files changed, 62 insertions, 0 deletions
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Signature/ASN1.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Signature/ASN1.php
new file mode 100644
index 0000000..d2a80a1
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/EC/Formats/Signature/ASN1.php
@@ -0,0 +1,62 @@
+<?php
+
+/**
+ * ASN1 Signature Handler
+ *
+ * PHP version 5
+ *
+ * Handles signatures in the format described in
+ * https://tools.ietf.org/html/rfc3279#section-2.2.3
+ *
+ * @author    Jim Wigginton <[email protected]>
+ * @copyright 2016 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib3\Crypt\EC\Formats\Signature;
+
+use phpseclib3\File\ASN1 as Encoder;
+use phpseclib3\File\ASN1\Maps\EcdsaSigValue;
+use phpseclib3\Math\BigInteger;
+
+/**
+ * ASN1 Signature Handler
+ *
+ * @author  Jim Wigginton <[email protected]>
+ */
+abstract class ASN1
+{
+    /**
+     * Loads a signature
+     *
+     * @param string $sig
+     * @return array
+     */
+    public static function load($sig)
+    {
+        if (!is_string($sig)) {
+            return false;
+        }
+
+        $decoded = Encoder::decodeBER($sig);
+        if (empty($decoded)) {
+            return false;
+        }
+        $components = Encoder::asn1map($decoded[0], EcdsaSigValue::MAP);
+
+        return $components;
+    }
+
+    /**
+     * Returns a signature in the appropriate format
+     *
+     * @param \phpseclib3\Math\BigInteger $r
+     * @param \phpseclib3\Math\BigInteger $s
+     * @return string
+     */
+    public static function save(BigInteger $r, BigInteger $s)
+    {
+        return Encoder::encodeDER(compact('r', 's'), EcdsaSigValue::MAP);
+    }
+}