From 6f6b93b01296bcbe17c44d0e2fa30ed4907b9340 Mon Sep 17 00:00:00 2001
From: terrafrost <terrafrost@php.net>
Date: Sun, 5 Nov 2017 12:33:22 -0600
Subject: [PATCH] BigInteger/GMP: use gmp_import / gmp_export

---
 composer.json                             | 2 +-
 phpseclib/Math/BigInteger/Engines/GMP.php | 6 ++----
 2 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/composer.json b/composer.json
index a68d0c84..0da35fe1 100644
--- a/composer.json
+++ b/composer.json
@@ -53,7 +53,7 @@
     "require": {
         "paragonie/constant_time_encoding": "^1",
         "paragonie/random_compat": "^1.4|^2.0",
-        "php": ">=5.6"
+        "php": ">=5.6.1"
     },
     "require-dev": {
         "phing/phing": "~2.7",
diff --git a/phpseclib/Math/BigInteger/Engines/GMP.php b/phpseclib/Math/BigInteger/Engines/GMP.php
index 016530b3..e2f70911 100644
--- a/phpseclib/Math/BigInteger/Engines/GMP.php
+++ b/phpseclib/Math/BigInteger/Engines/GMP.php
@@ -137,7 +137,7 @@ class GMP extends Engine
         switch (abs($base)) {
             case 256:
                 $sign = $this->is_negative ? '-' : '';
-                $this->value = gmp_init($sign . '0x' . Hex::encode($this->value));
+                $this->value = gmp_import($this->value);
                 break;
             case 16:
                 $temp = $this->is_negative ? '-0x' . $this->value : '0x' . $this->value;
@@ -174,9 +174,7 @@ class GMP extends Engine
             return $this->precision > 0 ? str_repeat(chr(0), ($this->precision + 1) >> 3) : '';
         }
 
-        $temp = gmp_strval(gmp_abs($this->value), 16);
-        $temp = (strlen($temp) & 1) ? '0' . $temp : $temp;
-        $temp = Hex::decode($temp);
+        $temp = gmp_export($this->value);
 
         return $this->precision > 0 ?
             substr(str_pad($temp, $this->precision >> 3, chr(0), STR_PAD_LEFT), -($this->precision >> 3)) :