How to configure Red Hat Enterprise Linux to use SHA-256/SHA-512 password hashing algorithms?

Solution Verified - Updated -

Issue

  • How to configure Red Hat Enterprise Linux to use SHA-256/SHA-512 password hashing algorithms during kickstart?
  • How to change the password hashing alogorithm of an existing deployed Red Hat Enterprise Linux 5 and 6?

Environment

  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 5

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