Patent ID: 9613038
Date: 2017-04-04
CPC Classifications: G06F

Claim:
1. A method for operating a storage system, a retention management system and a trusted component, said storage system being configured for storing data objects and metadata associated thereto, said retention management system being operable for data processing, said trusted component being operable for providing access to a secure date or time basis and for performing cryptographic operations by using internally stored secret data, said method comprising: generating a cryptographic key pair in said trusted component, the cryptographic key pair is generated in an asymmetric cryptographic scheme; receiving a storage request by the retention management system associated with a data object; calculating a retention date associated with a data object in said retention management system and associating said data object with metadata comprising the retention data; generating a digital signature for said metadata in said trusted component utilizing the cryptographic key pair; storing said metadata and said digital signature; and based on receiving a request to perform a deletion transaction on said data object for deleting said data object from the storage system: