User Keys

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    When you enable encryption for a job, you must define a password to protect data processed by this job, and define a hint for the password. The password and the hint are saved in the job settings. Based on this password, Veeam Agent generates a user key.

    The user key protects data at the job level. In the encryption hierarchy, the user key encrypts storage keys for all restore points in the backup chain.

    User Keys

    Veeam Agent saves a hint for the password to its database and to the backup metadata file (VBM). When you decrypt a file, Veeam Agent displays a hint for the password that you must provide. After you enter a password, Veeam Agent derives a user key from the password and uses it to unlock the storage key for the encrypted file.

    According to the security best practices, you should change passwords for encrypted jobs regularly. When you change a password for the job, Veeam Agent creates a new user key and uses it to encrypt new restore points in the backup chain. If you lose a password that was specified for encryption, you can change the password in the encryption settings. You can use the new password to restore data from all restore points in the backup chain, including those restore points that were encrypted with an old password.