Need advice on encrypting the password

We have automated cloning tool which runs mainly as shell script. Our passwords are stored on a file which is required while cloning is in progress, the logic is to have both PROD and NONPROD credentials are stored in the flat file which will be read by the shell script. I want to know if there is a way to decrypt and encrypt back again once the clone process is done or is there is a better way to manage the script in storing passwords? Kindly share your advice.

Thanks,
Shankar

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