From 48e50fe8fa32f4be4e9a8e1f6cdc30c75b40413c Mon Sep 17 00:00:00 2001
From: terrafrost <terrafrost@php.net>
Date: Mon, 9 Apr 2018 23:36:36 -0500
Subject: [PATCH 1/2] Tests/BigInteger: add test for conversion of 48 to signed
 hex

---
 tests/Unit/Math/BigInteger/TestCase.php | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/tests/Unit/Math/BigInteger/TestCase.php b/tests/Unit/Math/BigInteger/TestCase.php
index 3338aadb..e7f7bbeb 100644
--- a/tests/Unit/Math/BigInteger/TestCase.php
+++ b/tests/Unit/Math/BigInteger/TestCase.php
@@ -397,4 +397,13 @@ abstract class Unit_Math_BigInteger_TestCase extends PhpseclibTestCase
         $n = $this->getInstance(2);
         $x->powMod($e, $n);
     }
+
+    /**
+     * @group github1264
+     */
+    public function test48ToHex()
+    {
+        $temp = $this->getInstance(48);
+        $this->assertSame($temp->toHex(true), '30');
+    }
 }

From c63c2239726754249f025dc022f23ab76c70df9a Mon Sep 17 00:00:00 2001
From: terrafrost <terrafrost@php.net>
Date: Mon, 9 Apr 2018 23:47:38 -0500
Subject: [PATCH 2/2] BigInteger: fix for (new BigInteger(48))->toString(true)

---
 phpseclib/Math/BigInteger.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/phpseclib/Math/BigInteger.php b/phpseclib/Math/BigInteger.php
index 969c9ad6..32afa7a0 100644
--- a/phpseclib/Math/BigInteger.php
+++ b/phpseclib/Math/BigInteger.php
@@ -550,7 +550,7 @@ class Math_BigInteger
             $temp = $comparison < 0 ? $this->add(new Math_BigInteger(1)) : $this->copy();
             $bytes = $temp->toBytes();
 
-            if (empty($bytes)) { // eg. if the number we're trying to convert is -1
+            if (!strlen($bytes)) { // eg. if the number we're trying to convert is -1
                 $bytes = chr(0);
             }