Electronics and Telecommunications Research Institute

Ik Re Jeong

Hyun Sook Cho

Do Won Hong

A ring authentication method for a concurrency environment, the method capable of providing unforgeability, sender anonymity, and deniability in the concurrency environment, in which, when a receiver receiving a message requests a sender of the message to certify the message, the sender requested to certify the message sends a message certification value certifying that the sender is one of a plurality of users {P, . . . , P} and authenticates the message m to the receiver, and the receiver verifies the sent message certification value and authenticates that the message is sent from the one of the plurality of users {P, . . . , P}.

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Gwangju, South Korea

Ik Re Jeong