This method also requires some sort of key store (see above). However, if you want to maintain just one key, each key rotation will require you decrypt data with the old key and reencrypt with a new key. Again, it depends.
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Murdered rapper Tupac Shakur, who was killed in a drive-by shooting in 1996, is valued at $7m (4.5m), putting him ahead of screen icon Marilyn Monroe. Crossing over. Shakur has now had more albums released since his death than when he was alive, having left 200 tracks unpublished before he was shot.