Site Tools


Secure Email

Email is prone to disclosure of information. Most emails are currently transmitted in the plaintext (not encrypted). By means of some available tools, persons other than the designated recipients can read the email contents. Email encryption has been used by journalists and regular users to protect privacy.


1. What is Secure Email?

Secure Email refers that sender encrypt the message with the recipient's digital certificate on condition that both of them have e-mail digital certificate.
So that email on the internet will not be stolen during transmission and only the recipient can read encrypted mail. Even if the messages are retained or the sender sent the wrong message, others can not see the content of the message, which ensures the security of communication between users.
It's an end to end secure email technology and ensures that the email content can not be modified in the entire process from being sent to being received.
Now, PGP and S / MIME are two proven end to end secure e-mail standards.

2. Pretty Good Privacy (PGP)

Pretty Good Privacy (PGP) is a data encryption and decryption computer program that provides cryptographic privacy and authentication for data communication. PGP is often used for signing, encrypting, and decrypting texts, e-mails, files, directories, and whole disk partitions and to increase the security of e-mail communications.
PGP and similar software follow the OpenPGP standard (RFC 4880) for encrypting and decrypting data.


* Thunderbird Client Configuration and Enigmail Installation

It can be divided into two kinds of secure email according to the mail security level.

1. Combine Enigmail with GnuPG to send encrypted messages and sign messages.
2. Combine SmartCard and Enigmail to send encrypted messages and sign messages. Encrypting message does not require smart card, but decrypting message must use smart card. Email content and session key are transmitted after encrypted. Thus even if attackers intercept the information, they cannot understand the message or decrypt the message. This makes the mail much securer.

* 1.The Key Management of Enigmail
* 2.Combine SmartCard with Enigmail to come into secure e-mail

secure-email.txt · Last modified: 2017/06/19 07:23 by JavaCardOS