Delegation of electronic signature by multi-agent cryptography

摘要

For signing of data by a given one of M delegates mandated by N titleholders, where M>=2 and N=1 or M=1 and N>=2, the terminal of the given delegate reads in a delegation server information on the delegates and the titleholders of the group thus constituted. The data and the information read and a private key of the given delegate are applied to a cryptographic algorithm to produce a signature which therefore carries a cryptographic delegation mark. The data, information, and signature are transmitted to a user terminal that can trace the characteristics of the signature delegation a posteriori.