| 摘要 |
PROBLEM TO BE SOLVED: To provide a secret information transmission method and system for allowing an authentication server to perform terminal authentication when a terminal transmits different pieces of secret information to multiple company servers, and allowing the authentication server not to be able to decode the different pieces of secret information to be transmitted to the respective company servers.SOLUTION: After an authentication server authenticates a terminal, the terminal generates first encryption information by encrypting first information to be transmitted to a settlement company server with the use of a settlement company key, generates second encryption information by encrypting second information to be transmitted to a delivery company server with the use of a delivery company key, and transmits the pieces of encryption information to the authentication server. The authentication server generates first signature encryption information by giving a signature to the first encryption information with the use of an authenticator key, and generates second signature encryption information by giving a signature to the second encryption information with the use of an authenticator key. Then, the first signature encryption information is transmitted to the first company server, and the second signature encryption information is transmitted to the second company server. |
