Encryption and Decryption of a file using script

@AmreshHalder 

• Add the entry for the data file location in Security file. Specify the read and write folders:

// groovy source code
grant codebase "file:///groovy/script" { 
  permission java.util.PropertyPermission "*", "read";
  permission java.io.FilePermission "/tmp/*", "read";
  permission java.io.FilePermission "/tmp/output/*", "write";
};

 Add the code to Groovy Evaluator

import java.security.*
import javax.crypto.*
import javax.crypto.spec.*

def source = new File('/tmp/test.txt').text
def cipher = Cipher.getInstance('DES')
cipher.init(Cipher.ENCRYPT_MODE, SecretKeyFactory.getInstance('DES').generateSecret(new DESKeySpec('secret12'.getBytes('UTF-8'))))
def target = cipher.doFinal(source.bytes).encodeBase64()

new File('/tmp/output/output.dat').write("$target")

Specify your relevant encryption values

The source file will be encrypted and stored in the output folder. You can write the code to decrypt it if you need and verify if the data is decrypted correctly.

In your StreamSets pipeline, you can provide the source/target file name as a field.

@AmreshHalder 

There should be a reverse process to do the same. Give it a try, or else will try and play with it later today.