Storage,distribution and revalidation of electronic original documents by trusted custodial units (TCU)

摘要

A method of handling stored e-original objects that have been created by signing information objects by respective transfer agents, submitting signed information objects to a trusted custodial utility, validating the submitted signed information objects by at least testing the integrity of the contents of each signed information object and the validity of the signature of the respective transfer agent, and applying to each validated information object a date-time stamp and a digital signature and authentication certificate of the trusted custodial utility, comprises the steps of : selecting a stored e-original object; re-validating the selected e-original object by at least verifying the digital signature of the trusted custodial utility applied to the selected e-original object; and applying to the re-validated e-original object a current date-time stamp and a digital signature and current authentication certificate of the trusted custodial utility.