New Secure and Practical E-Mail Protocol with Perfect Forward Secrecy

The invention of electronic mail (e-mail) has made communication through the Internet easier than before. However, because fundamental functions are built on opensource technologies, it is critical to keep all transmitted e-mail secure and secret. Most current protocols only allow recipients check their after authenticated by server. Unfortunately, subsequent transmission from server recipient remains unprotected in clear form without encryption. Sometimes, this not allowed, especially consideration issues such as confidentiality integrity. In paper, we propose a practical protocol with perfect forward secrecy, well high security level, which session keys used encrypt last will be disclosed even if long-term secret key compromised for any possible reason. Thus, proposed scheme benefits following advantages: (1) providing mutual authentication remove threat impersonation attacks, but also spam; (2) guaranteeing integrity while service secrecy; (3) simplifying management avoiding expense public infrastructure involvement; (4) achieving lower computational cost meeting criteria compared related works. analysis discussion demonstrate that works well.