May 30, 2019

Jan 27, 2015 The SSL/TLS Handshake: an Overview - TLS specifications allow for quite a number of cipher suites, and the client and server will almost always have access to one they can both employ. Basic vs mutually-authenticated handshake Another confusing point is that the basic model we described above lets the client verify the server, and the vast majority of sessions secured by TLS only Is TLS email encryption good enough? | DataMotion Oct 11, 2017 Explained: How ‘TLS’ Keeps Your Email Secure Jun 10, 2014

What is a TLS/SSL certificate, and how does it work?

TLS Basics Transport Layer Security (TLS) encrypts data sent over the Internet to ensure that eavesdroppers and hackers are unable to see what you transmit which is particularly useful for private and sensitive information such as passwords, credit card numbers, and personal correspondence. How to Tell Who Supports SMTP TLS for Email - LuxSci Jan 27, 2015

An Overview of TLS 1.3 - Faster and More Secure

What is a TLS handshake? TLS is an encryption protocol designed to secure Internet communications. A TLS handshake is the process that kicks off a communication session that uses TLS encryption. During a TLS handshake, the two communicating sides exchange messages to acknowledge each other, verify each other, establish the encryption algorithms they will use, and agree on session keys. How does TLS work? TLS uses a combination of symmetric and asymmetric cryptography, as this provides a good compromise between performance and security when transmitting data securely. With symmetric cryptography, data is encrypted and decrypted with a secret key known to both sender and recipient; typically 128 but preferably 256 bits in TLS is also used in applications such as email, file transfers, video and audio conferencing. TLS is also compatible with a significant number of protocols including HTTP, SMTP, FTP, XMPP, and many more. Users should note that TLS isn't designed to secure data on end systems, only data transferred over the internet. How Does TLS Work? When a message is sent using a Forced TLS connection, if the TLS handshake cannot be established or if the target server is not configured to accept only Forced TLS connections, the message will not be delivered. To work, TLS should be enabled on both - recipient's and sender's side. By default, Opportunistic TLS is enabled on our servers. SMTP over TLS (STARTTLS) - Lets take the case of a Yahoo mail user that sends an email to a Gmail users. When you send an email with SMTP over TLS between these two mail services, the message between the two servers is encrypted. Consequently on a condition that the recipient server also supports SMTP over TLS (which Gmail does).