ELECTRONIC MAIL CREATION DEVICE, ELECTRONIC MAIL CREATION METHOD, ELECTRONIC MAIL CREATION PROGRAM STORAGE MEDIUM, ELECTRONIC MAIL SENDING DEVICE, ELECTRONIC MAIL SENDING METHOD, AND ELECTRONIC MAIL SENDING PROGRAM STORAGE MEDIUM

摘要

There is provided an electronic mail creation device that includes an acceptance unit that accepts a specification of a plurality of destinations including a secret destination and a public destination; a broadcast mail creation unit that creates a broadcast electronic mail by performing encryption processing for sending data not by means of a public key certificate of the secret destination but by means of a public key certificate of the public destination and not by setting the secret destination in a "To:" destination box and a "Cc:" destination box but by setting the public destination in the "To:" destination box and the "Cc:" destination box; and a secret mail creation unit that creates a secret destination electronic mail by performing encryption processing for the sending data by means of at least the public key certificate of the secret destination and not by setting the public destination in any destination box but by setting the secret destination in one of the destination boxes.