You can view the history of encryption policies. Choose Admin > Security > Encryption Policies > Encryption Policy History, and the Encryption Policy History dialog box appears:
For the selected object, the encryption policy history displays the following information for the selected object:
Version — The version number of the encryption policy. Numbering starts at 0 and increases with every policy change.
State — The state of the policy, either Current or Previous.
Cipher — The encryption policy cipher. For objects with encryption disabled, the cipher column lists Disabled.
Version — The version number of the encryption policy. Numbering starts at 0 and increases with every policy change.