In binary log extract below we see “setting up cryptography” for restore this means that the data copy we are trying to restore was encrypted at the time of data copy job was run.
Job Message 2015/04/01 11:29:59 156 Jobs TPGNVS01 Starting job 156 'Restore - SQL - TPGSQL01 to DB-1-70 from Archived saveset from TMDNVD01' (Phase 1 , Instance 1) for UID 1
Information 2015/04/01 11:30:00 156 Data Plugin DB-1-70 PlgSetRestoreCrypto(): setting up cryptography for restore (crypt library id == 'AES-256 encryption/decryption library (SHA-256 passphrase digest), supplied by Quest Software Inc. 2013',
Job Message 2015/04/01 11:30:01 156 Media TPGNVS01 Job has been assigned device 'DR (backup) - 126.96.36.199'
Error 2015/04/01 11:30:01 156 Data Plugin DB-1-70 Invalid file header for compressed backup file
Invalid file header magic: 49 240 53 159
Client that is being restored to does not have encryption plugin installed or configured.
To restore an encrypted backup the client being restored to must have the same encryption plugin installed with the same algorithm selected and the same encryption key string/password used.
Install encryption plugin with same algorithm selected and the same encryption key string/password used on the client the restore in restoring too.