US Patent 11088832 Secure logging of data storage device events

This disclosure relates to a data storage device comprising, a non-transitory storage medium configured to store user content data and a non-transitory data store configured to store a first log entry comprising first log data encrypted using one of a first public key and a corresponding first private key; a second public key different from the first public key; and a second log entry. The second log entry comprises the first public key, and second log data encrypted using one of the second public key and a corresponding second private key.