Email encryption is a term that refers to the encryption and authentication of electronic mail, or e-mail. The most common email encryption is designed to rely on what is called public key cryptography. There are several popular protocols that are used to encrypt e-mail, the most notable of which are mail session encryption, certificate encryption, Open PGP encryption, TLS encryption, and S / MIME encryption.
Mail Session Encryption - this is associated with increased use of STARTTLS SMTP, which is a layer of TLS, which is on top of the connection SMTP. She is able to protect mail traffic sniffed as he passed, but it really does not include email encryption, as the actual content within the e-mail capable of being opened and thusly forged e-mail relays, which are involved. Cryptography, then, is really going on between the individual SMTP relay, but not between the individual sender and recipient. When both relays support the proposal STARTTLS, then it can be used regardless of whether or not another protocol used to encrypt the contents of the e-mail.
Identity encryption is a form of public-key cryptography, which is designed and implemented to use the unique information about the identity of users, such as e-mail as a public key. The public key can also be a text value, such as domain name or the name or IP address associated, for example.
Open PGP - PGP stands for Pretty Good Privacy, and Open PGP is a computer program designed to provide cryptographic privacy and authentication. It is often used for signature, decryption or encryption of email messages in order to improve security for electronic communications.
TLS - TLS means Transport Layer Security, and he is the successor to Secure Sockets Layer, or SSL. These cryptographic protocols are designed to ensure data integrity and security for networks, such as via the Internet. There are several versions of these protocols, which saw widespread use, including distributing Web browser, Internet fax, secure email, VoIP and instant messaging.
S / MIME - S / MIME is an acronym that stands for Multipurpose Internet Mail extensions, and a standard that is used for email signatures and public key email encryption, which is encapsulated in MIME.
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Each of these protocols, email encryption, encryption, mail encryption session identity, Open PGP encryption, TLS encryption, and S / MIME encryption is used for various purposes, and some apply not only to encrypt e-mail, but also to other types of encryption, including Internet and Image of Instant Messaging encryption, depending on the method and means of communication.
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