Ying Zhang created KYLIN-4902:
---------------------------------

             Summary: Avoid using weak cryptographic algorithm 
                 Key: KYLIN-4902
                 URL: https://issues.apache.org/jira/browse/KYLIN-4902
             Project: Kylin
          Issue Type: Improvement
            Reporter: Ying Zhang


in file 
kylin/blob/master/core-common/src/main/java/org/apache/kylin/common/util/EncryptUtil.java,
 AES/ECB/PKCS5PADDING is used for encrypting and decrypting information, line 
36 and 49 

*Security impact*: 

ECB is a deprecated encryption mode used with AES, it may cause inefficient 
encryption, here is the comparison example that encrypts  a picture with ECB 
mode and CBC mode 
[https://datalocker.com/what-is-the-difference-between-ecb-mode-versus-cbc-mode-aes-encryption/]

some links here: [https://cwe.mitre.org/data/definitions/327.html]

suggestions: we recommend you use AES/CBC/PKCS5Padding, but CBC mode would 
require an iv in the encryption process for security concerns. 

*Please share with us your opinions/comments if there is any:*

Is the bug report helpful? 

 



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