Certified mail problem is one of the problems which occur in case of contract over Internet. This problem is to check whether mail has reached certainly the partner the sender of mail wants to send to. Some E-mail programs have the function which the sender requests that receiver returns the receipt of E-mail. However, this function is useless when the sender cannot trust the receiver, since it is dependent on the receiver whether returns or not. Even when they cannot trust each other, this function is wanted to realize, and if required, this mail receipt should be proved to third party.
Papers
Kenji IMAMOTO, Kouichi SAKURAI
"Private Certified E-mail Systems with Electronic Notice Board",
Proc. of the 2003 International Workshop on CRYPTOLOGY AND NETWORK SECURITY (CANS2003), pp.726-729, Sep. 2003.
Kenji IMAMOTO, Kouichi SAKURAI
"Certified E-mail Systems Using Public Notice Board",
Trust and Privacy in Digital Business (TrustBus'03), 14th International Workshop on Database and Expert Systems Applications (DEXA2003), pp.460-464, Sep. 2003.
Kenji IMAMOTO, Kouichi SAKURAI
"A Certified E-mail System With Receiver's Selective Usage of Delivery Authority",
Third International Cryptology Conference in India (INDOCRYPT2002), LNCS2551, pp.326-338, Dec. 2002.
Kenji IMAMOTO, Kouichi SAKURAI
"A Scalable On-line Certified E-mail Protocol Using Password Authentication",
Proc. of the 3rd International Workshop on Information Security Applications (WISA2002), pp.319-331, Aug. 2002. (Best Paper)