Evaluation of Encryption Procedure for User Attestation System Using a Cellular Phone

To provide a low-cost and simple user attestation method, the authors previously proposed a method with strong authentication using the digital camera of a cellular phone. This method used 2D color code, and as such, there are some process costs like create and decode 2D color code. In this paper, the authors present an improved attestation system using a cellular phone and 2D color code. They compare the performance of the encryption methods and the efficiency of the proposed attestation method, which is confirmed using an experimental prototype system.