METHOD AND SYSTEM FOR TRANSMITTING INFORMATION UTILIZING ZERO-KNOWLEDGE CERTIFYING PROTOCOL

摘要

An information transmitting method and system which can guarantee the validity of a user, the reliability of information transmission, and the validity of transmitted information when an information offerer provides the user with the information through a communication line. False use such as alteration of transmitted information or received report is prevented. The information delivery can be certified later. When the user requests the offerer sends information to the user, the following processings are simultaneously performed. A processing in which the information offerer confirms the certification of the user in accordance with a zero-knowledge certifying protocol, a processing in which the information M is included in a check sentence E contained in the protocol and transmitted to the user from the offerer one bit by one bit or in units of bits, and a processing in which the information offerer records and handles the communication history data H of the protocol. <MATH>