Data verifying method apparatus for creating data to be verified

Details Data verifying method apparatus for creating data to be verified Data verifying method apparatus for creating data to be verified

1997-10-14

2000-12-12

Swann, Tod R.

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

713179, 713185, 713200, 713193, 380282, 380283, 705 67, 705 77, H04L 900

Patent

active

061611832

ABSTRACT:
A token 12 creates utilization history information and sends the information to an information processing unit 11 and simultaneously creates an verification value and stores the value in a utilization-value holding unit 21. The information processing unit 11 records the utilization history information in a history holding unit 16. On receiving a verification-value output request from the information processing unit 11, the token 12 provides the verification value with a signature and outputs the combination of the verification value and the signature. The information processing unit sends to a recovery unit 13 the verification value with the signature as well as the utilization history information. The recovery unit 13 verifies the signature and also the utilization history on the basis of the verification value further.

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Chapter 18: One-Way Hash Functions, pp. 455-457.
JIS-X5052 "Modes of operation for a 64-bit block cipher algorithm," pp. 91-95.

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