Entity identity validity verification method and apparatus in which multi-TTP participates

摘要

The present application relates to an entity identity validity verification method and apparatus in which multi-TTP participates, in which the method is such that entity B sends message 1 to entity A and entity 2 can trust message 2 after entity A receives message 1. After sending TTPA to TTPA and receiving message 2, Entity A verifies the validity of entity A, sends message 3 to TTPB, and after TTPB receives message 3, it validates the identity of entity B. After sending the message 4 to the TTPA and TTPA receiving the message 4, the first signature of the TTPB in the message 4 is verified, the message 5 is sent to the entity A, and the entity A sends the message 5 After receiving, it verifies the first signature of TTPA in message 5 and Including sending a message 6 to entity B and then verifying the second signature of TTPA to determine the validity of entity A's identity after entity B receives message 6 . This application implements identity validity verification between entities that each trust different trusted third parties.