Patent ID: 8645692
Filing Date: 2014-02-04
Classification: H04L

Abstract:
1. An e-mail sending method, comprising the steps of: Concatenating a value {A, B, N}, wherein A is a receiver's identifier, B is a sender's identifier, and N is a nonce issued by a mail server AMS; Encrypting, by the mail server AMS the value {A, B, N} with a secret key K, the secret key K being only possessed by the mail server AMS; Wherein the receiver's e-mail address (LD address) is formed with a receiver's domain name attached to the encrypted value {A, B, N}K where the sender knows the receiver's e-mail address; causing a mail server BMS to receive the e-mail address and a message M from a sender; causing the mail server BMS to send the e-mail address and the message M to the mail server AMS; and causing the mail server AMS to identify a receiver from the e-mail address using a secret key Kin, and to send the message M to the receiver.