What do you need to know about TLS handshake protocol?
Establishing a Secure Session by Using TLS. The TLS Handshake Protocol involves the following steps: The client sends a “Client hello” message to the server, along with the client’s random value and supported cipher suites. The server responds by sending a “Server hello” message to the client, along with the server’s random value.
Which is the most important part of establishing a TLS connection?
The most important part of establishing a secure connection is called the handshake. During the TLS Handshake, the server and the client exchange important information used to determine connection properties.
What happens in a client hello SSL handshake?
Client hello: The client sends a client hello message with the protocol version, the client random, and a list of cipher suites. Server hello: The server replies with its SSL certificate, its selected cipher suite, and the server random.
What happens to PreMaster secret in SSL handshake?
The premaster secret: The client sends one more random string of bytes, the “premaster secret.”. The premaster secret is encrypted with the public key and can only be decrypted with the private key by the server. (The client gets the public key from the server’s SSL certificate.)
How to resuming a secure session using TLS?
Resuming a Secure Session by Using TLS The client sends a “Client hello” message using the Session ID of the session to be resumed. The server checks its session cache for a matching Session ID. If a match is found, and the server is able to resume the session, it sends a “Server hello” message with the Session ID.
How does session ticket resumption work in TLS?
Session ticket resumption is designed to address this issue. The idea is simple: outsource session storage to clients. A session ticket is a blob of a session key and associated information encrypted by a key which is only known by the server. The ticket is sent by the server at the end of the TLS handshake.