From 3d97978cee8a12cbe513f5e72f7f986690af33fe Mon Sep 17 00:00:00 2001
From: Andreas Beeker <kiwiwings@apache.org>
Date: Mon, 26 Jan 2015 00:02:20 +0000
Subject: [PATCH] The default for standard encryption cipher algorithm was
 wrongly set to rc4

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1654716 13f79535-47bb-0310-9956-ffa450edef68
---
 .../crypt/standard/StandardEncryptionInfoBuilder.java     | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/java/org/apache/poi/poifs/crypt/standard/StandardEncryptionInfoBuilder.java b/src/java/org/apache/poi/poifs/crypt/standard/StandardEncryptionInfoBuilder.java
index 0a9b569cd4..43dc569511 100644
--- a/src/java/org/apache/poi/poifs/crypt/standard/StandardEncryptionInfoBuilder.java
+++ b/src/java/org/apache/poi/poifs/crypt/standard/StandardEncryptionInfoBuilder.java
@@ -57,8 +57,14 @@ public class StandardEncryptionInfoBuilder implements EncryptionInfoBuilder {
         this.info = info;
 
         if (cipherAlgorithm == null) {
-            cipherAlgorithm = CipherAlgorithm.rc4;
+            cipherAlgorithm = CipherAlgorithm.aes128;
         }
+        if (cipherAlgorithm != CipherAlgorithm.aes128 &&
+            cipherAlgorithm != CipherAlgorithm.aes192 &&
+            cipherAlgorithm != CipherAlgorithm.aes256) {
+            throw new EncryptedDocumentException("Standard encryption only supports AES128/192/256.");
+        }
+        
         if (hashAlgorithm == null) {
             hashAlgorithm = HashAlgorithm.sha1;
         }
-- 
2.39.5