Patent ID: 11936795
Assignee: ORANGE
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. A method for generating keys for an anonymous signature scheme, said method comprising:
calculating by at least one revocation entity a pair of revocation keys comprising a public key and a private key, said private key being usable by said revocation entity to revoke anonymity of an anonymous signature complying with said anonymous signature scheme;
registering by a group administration entity at least one member entity with a group;
calculating, from the public key of said pair of revocation keys, a trace generator, said trace generator being intended to be used by each of said at least one member entity to generate a trace representative of said at least one member entity, said trace being invariant relative to anonymous signatures generated by said at least one member entity in accordance with said anonymous signature scheme; and
said at least one member entity blindly obtaining a private group key, said private key being used by said at least one member entity to generate the anonymous signatures in accordance with said anonymous signature scheme, said anonymous signatures comprising said trace.