From 22588653ba9d9ebf330db36ee1690979f1ac418e Mon Sep 17 00:00:00 2001
From: Julen Diez <julen.d.m@gmail.com>
Date: Fri, 31 Jan 2020 12:34:17 +0100
Subject: [PATCH] change encrypt3DES function

---
 src/api-redsys.js | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/api-redsys.js b/src/api-redsys.js
index 1124ca1..1b61558 100644
--- a/src/api-redsys.js
+++ b/src/api-redsys.js
@@ -11,9 +11,10 @@ class Redsys {
     const iv = Buffer.alloc(8, 0);
     const cipher = crypto.createCipheriv('des-ede3-cbc', secretKey, iv);
     cipher.setAutoPadding(false);
-    return cipher.update(zeroPad(str, 8), 'utf8', 'base64') +
-     cipher.final('base64');
-  }
+    const en_key = cipher.update(zeroPad(str, 8), 'utf8', 'binary') + cipher.final('binary');
+    const l = Math.ceil(str.length / 8) * 8;
+    return Buffer.from(en_key.substr(0, l), 'binary').toString('base64');
+}
 
   decrypt3DES(str, key) {
     const secretKey = Buffer.from(key, 'base64');