| 摘要 |
PURPOSE: A method for providing a server provision script in a client is provided to guarantee the safety of the client by executing a script provided by a server after certifying the server based on a digital signature. CONSTITUTION: A server certificate including a server private key and a server public key is issued by an certification institution to a server(31). A client(16) is connected to the server(32). The server digitally signs an original text for certification with the server private key and transmits the signed original text, the server public key, and a script to be executed in the client to the client(33). The client recovers the original text for certification with the server public key and compares the original text for certification with an original text for confirmation stored in the client(34). [Reference numerals] (14) Server; (16) Client; (31) Issuing a server certificate; (32) Connection(URL); (33) Transmitting a web page(a script, a server publication key, and a signed original text); (34) Extracting an original text(URL); (35) Authenticating the original text and executing the script
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