Legal Relations in the Transmitting of the Secret E-mails

More and more people begin to use E-mails for communications. While the general E-mails are basically neither safe nor secret due to the using of SMTP and POP3 as their transferring protocols. In order to keep the E-mail secret during its transferring, man begins to use the principle of posts registered mails and cipher technology and the SPKM to reform the general E-mail communications. The secret E-mail using the SPKM is a kind of the above reforms. Because of many parties participating in its transferring, the legal relations are much more complicated than the general E-mail. It's a prerequisite for its mormal transferring to correctly define the legal relationship between the related parties. This article tries to study the legal relations between the related parties.