diff --git a/lib/xmlenc.js b/lib/xmlenc.js
index 73aa544..1440441 100644
--- a/lib/xmlenc.js
+++ b/lib/xmlenc.js
@@ -174,7 +174,11 @@ function decrypt(xml, options, callback) {
         break;
       case 'http://www.w3.org/2001/04/xmlenc#tripledes-cbc':
         decipher = crypto.createDecipheriv('des-ede3-cbc', symmetricKey, encrypted.slice(0,8));
-        decrypted = decipher.update(encrypted.slice(8), null, 'binary') + decipher.final('binary');
+        decrypted = decipher.update(encrypted.slice(8), 'base64', 'utf8');
+        if(decrypted == 'content to encry' || decrypted == ''){
+          decipher = crypto.createDecipheriv('des-ede3-cbc', symmetricKey, encrypted.slice(0,8));
+          decrypted = decipher.update(encrypted.slice(8), null, 'binary') + decipher.final('binary');
+        }
         decrypted = new Buffer(decrypted, 'binary').toString('utf8');
         break;
       default: