How to change cipher, key-size, hash, master key of existing LUKS device

Solution Verified - Updated -


  • How can I change or rotate the master key (also called volume key) on an existing LUKS device?

  • How can I change the encryption cipher on an existing LUKS container?


  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 6.6+
  • cryptsetup-reencrypt package

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