INFORMATION PROCESSING SYSTEM

摘要

PROBLEM TO BE SOLVED: To obtain an information processing system capable of achieving a security level the same as secure communication using an impersonation prevention technique without increase in cost or latency.SOLUTION: A communication device 2 receives content data T1(N+1) with a composite parameter from a semiconductor storage device 3, and extracts a hush value HB and an authentication code SB(N+1) from a composite parameter VB(N+1) included in the content data T1(N+1) with a composite parameter. Then, on the basis of the hush value HB extracted from the composite parameter VB(N+1), the communication device evaluates integrity of content data T0 included in the content data T1(N+1) with a composite parameter, and authenticates authenticity of the semiconductor storage device 3 on the basis of the authentication code SB(N+1) extracted from the composite parameter VB(N+1).