CERTIFYING METHOD FOR PRICE SETTLEMENT

摘要

PROBLEM TO BE SOLVED: To conceal information to be used for certification from a commodity seller. SOLUTION: Commodity purchaser's communication equipment ciphers customer information to be used for certification by a customer information ciphering program 12. The ciphered customer information is sent to certifier's communication equipment 30 through commodity seller's communication equipment 20. The equipment 30 deciphers the ciphered customer information and uses the deciphered customer information for certification.