L.S Haturusinha, Y.Y Landersz, A.U.H Gamage, P.N Pathiranage, G.T.D Rodrigo, M.P.A.W. Gamage
Sri Lanka Institute of Information Technology
pgpgateway@gmail.com, anjalie.g@sliit.lk
Abstract - PGP Mail Gateway is a backend server which acts like a gateway for mail encryption and decryption with digital signature using industry standards available on open source environment. It is designed to be deployed even on an existing mail server or as a separate backend service where it will provide email security through GPG (open source version of PGP) encryption. Therefore this system will not route emails but will handle only email encryption and decryption. PGP Mail Gateway will serve the purpose of providing email security to a business entity which requires a low cost but highly secure solution with user interactivity kept at a minimum.
Keywords- PGPMG - PGP Mail Gateway, RFC – Request for Comments, Cryptography - is the practice and study of techniques for secure communication, Cypher text – text with cryptography applied on them , Encryption – turning plain text in to cypher text, Decryption, SMTP – Simple Mail Transfer Protocol. I. INTRODUCTION
Email is apparently the most popular mode of communication in the world. An email is considered an open postcard which traverses through internet where anyone can read it. Thus, it goes through an unprotected network before it reaches the destination. Several RFCs on enhancing the privacy of emails have been put forward by different groups in order to bring more secure platform to the user [1].
However, several cryptographic methods are available such as symmetric-key encryption, Caesar’s cipher and public key cryptography [2]. By using these methods several data encryption methods have been implemented.
A. Pretty Good Privacy (PGP) This data encryption and decryption program is often used for signing, encrypting, decrypting texts, files, etc… PGP
References: 1] M.Brinkers, “Why You Should Encrypt Your Email”, djigzo.com, para.3, Jan. 14, 2011. [online]. Available: http://www.djigzo.com/. [Accessed Feb. 22, 2011]. 2] Network Associates, “How PGP Works”, pgpi.org, 1990-1999, [online]. Available: http://www.pgpi.org/doc/pgpintro/. [Accessed Feb. 19, 2011]. 3] Admin, “PGP Universal Gateway Email”, Symantec.com, para.1, 1995-2011, [online]. Available: http://www.symantec.com/business/universal-gateway-email. [Accessed Feb. 25, 2011]. 4] Admin, “Z1 SecureMail Gateway”, freshmeat.net, para.1, Feb. 03, 2011. [online]. Available: http://freshmeat.net/projects/z1securemailgateway/. [Accessed Feb. 22, 2011].