A method and apparatus for electronic commerce using a digital ticket are provided. The method for electronic commerce using a digital ticket includes hiding a message comprising a random number and transmitting the hidden message to a ticket issuer, receiving the hidden message signed with a digital signature by the ticket issuer, verifying the digital signature on the message, and transmitting the message with the verified digital signature to the ticket issuer to consume a digital ticket.

 
Web www.patentalert.com

< Tamper resistant module certification authority

< Content output apparatus, content output method and content acquisition apparatus

> Deterring theft of media recording devices by encrypting recorded media files

> Cryptosystem based on a Jacobian of a curve
~ 00611