| 摘要 |
An activation restriction confirmation processing unit concatenates the basic portion of the name of an activation-restricted program and constituent information indicating a destination, specifies the activation-restricted program that is to be an expansion program of a basic program, and determines whether this activation-restricted program is included in a group of expansion programs. If it is included, the activation-restricted program is loaded. If loading succeeds, then signature data included in this program is read out. The signature data is decrypted using a public key, and confirmation information obtained by decryption is checked against information that is the result of concatenating the identification information of the expansion program and the constituent information indicating the destination. If there is a match, then this activation-restricted program is installed. If there is a non-match, then processing is suspended.
|
