information systems for selection and use of several verschlu00fcsselungsanwenderprotokollen for copyright protection of digital productions

摘要

A verifier and a claimant notify each other of verifier type information and claimant type information, respectively. The verifier determines a verifier method corresponding to a combination of the verifier type information and the notified claimant type information, generates challenge data in accordance with the determined verifier method, and transmits the challenge data to the claimant. On receiving the challenge data from the verifier, the claimant determines a claimant method corresponding to the combination of the claimant type information and the notified verifier type information. The claimant then performs claimant processing on the challenge data using the determined claimant method to obtain response data, and transmits the response data to the verifier. On receiving the response data from the claimant, the verifier performs verifier processing on the response data using the determined verifier method.