[PR] RANGER-4454. KMS: adds support for the SM4 encryption algorithm. [ranger]

Tue, 03 Oct 2023 19:13:17 -0700 


xiaojunxiang2023 opened a new pull request, #287:
URL: https://github.com/apache/ranger/pull/287

     **SM4 is already supported in recent versions (3.4.0) of hdfs transparent 
encryption**：
   1. Hadoop website: 
https://apache.github.io/hadoop/hadoop-project-dist/hadoop-hdfs/TransparentEncryption.html
       
![HDFS_SM4](https://github.com/apache/ranger/assets/65019264/81ba2af8-4bd7-4412-acd0-45e403a736e7)
   3. Jira(HDFS supported SM4):   
https://issues.apache.org/jira/browse/HDFS-15098  
   
   
     When I add in the region of the Encryption key used "SM4 / CTR/NoPadding" 
algorithm, RangerKMS background will print "under Caused by: Java security. 
**NoSuchAlgorithmException**: **SM4 KeyGenerator not available**"
   
![SM4_NotAvaliable](https://github.com/apache/ranger/assets/65019264/b139ca33-c7a7-4062-b47a-d227e386318c)
   
     **So RangerKMS should adapt to this.**
   


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