| 摘要 |
PURPOSE: A method of operating a symmetric security mail using encryption technique in Internet is provided to protect information between web browsers and web severs, and other information between CGI operating in the web severs, Servlet and mail severs. CONSTITUTION: First, a user records to a mail sever as a member, and the user prepares a message for mailing to a destination party by a web browser(S8 step). Then, the user decide to use a security service for sending the prepared mail. If the user wants to use the security service, the user has to select an encryption mail. This mail is transmitted to the mail sever(S12 step), and transmitted it to desired destination parties. Accordingly, a user of the destination party have to input an encryption codes promised each other when the user open the received mail.
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