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https://issues.apache.org/jira/browse/KYLIN-3356?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16628624#comment-16628624
 ] 

ASF GitHub Bot commented on KYLIN-3356:
---------------------------------------

shaofengshi closed pull request #258: KYLIN-3356 Constant in SecretKeySpec
URL: https://github.com/apache/kylin/pull/258
 
 
   

This is a PR merged from a forked repository.
As GitHub hides the original diff on merge, it is displayed below for
the sake of provenance:

As this is a foreign pull request (from a fork), the diff is supplied
below (as it won't show otherwise due to GitHub magic):

diff --git 
a/core-common/src/main/java/org/apache/kylin/common/util/EncryptUtil.java 
b/core-common/src/main/java/org/apache/kylin/common/util/EncryptUtil.java
index deb54d4749..191b3cd06a 100644
--- a/core-common/src/main/java/org/apache/kylin/common/util/EncryptUtil.java
+++ b/core-common/src/main/java/org/apache/kylin/common/util/EncryptUtil.java
@@ -19,6 +19,8 @@
 package org.apache.kylin.common.util;
 
 import java.nio.charset.StandardCharsets;
+import java.security.SecureRandom;
+
 import org.apache.commons.codec.binary.Base64;
 
 import javax.crypto.Cipher;
@@ -28,8 +30,10 @@
     /**
      * thisIsAsecretKey
      */
-    private static byte[] key = { 0x74, 0x68, 0x69, 0x73, 0x49, 0x73, 0x41, 
0x53, 0x65, 0x63, 0x72, 0x65, 0x74, 0x4b,
-            0x65, 0x79 };
+    private static byte[] key = new byte[16];
+    {
+        new SecureRandom().nextBytes(key);
+    }
 
     public static String encrypt(String strToEncrypt) {
         try {
diff --git 
a/core-common/src/test/java/org/apache/kylin/common/util/EncryptUtilTest.java 
b/core-common/src/test/java/org/apache/kylin/common/util/EncryptUtilTest.java
index bc1c3e7ae4..717a94afed 100644
--- 
a/core-common/src/test/java/org/apache/kylin/common/util/EncryptUtilTest.java
+++ 
b/core-common/src/test/java/org/apache/kylin/common/util/EncryptUtilTest.java
@@ -27,7 +27,14 @@
     public void testAESEncrypt(){
         String input = "hello world";
         String result = EncryptUtil.encrypt(input);
-        Assert.assertEquals("4stv/RRleOtvie/8SLHmXA==", result);
+        Assert.assertEquals("dImt2pa7nDD7STLgdzFXGg==", result);
+    }
+
+    @Test
+    public void testAESDecrypt(){
+        String input = "F2nAgzbBcGRs8wtObIaXfQ==";
+        String result = EncryptUtil.decrypt(input);
+        Assert.assertEquals("wordcount", result);
     }
 
 }


 

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> Constant in SecretKeySpec
> -------------------------
>
>                 Key: KYLIN-3356
>                 URL: https://issues.apache.org/jira/browse/KYLIN-3356
>             Project: Kylin
>          Issue Type: Improvement
>            Reporter: liyang
>            Priority: Minor
>             Fix For: v2.6.0
>
>
> Reported by Rumen Paletov <[email protected]>: 
>  As part of some research about the common crypto mistakes that developers
>  make <[https://cs.ucsb.edu/~chris/research/doc/ccs13_cryptolint.pdf]>, I
>  noticed that your application has one of them.
>  
>  In particular, there's a violation of Rule 3 in
>  org.apache.kylin.common.util.EncryptUtil
>  
> <[https://github.com/apache/kylin/blob/5552164ba09eba989b9ddccdf3f1e4f83ed0b799/core-common/src/main/java/org/apache/kylin/common/util/EncryptUtil.java#L36]>.
>  That is, SecretKeySpec is being initialized with a constant key
>  
> <[https://github.com/apache/kylin/blob/5552164ba09eba989b9ddccdf3f1e4f83ed0b799/core-common/src/main/java/org/apache/kylin/common/util/EncryptUtil.java#L30]>
>  instead of a randomly generated one.
>  
>  One solution would be to generate a key using SecureRandom:
>  
>  > byte[] key = new byte[16];
>  > new SecureRandom.nextBytes(key);
>  
>  



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