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How is symmetric key generated in SSL?
The session key that the server and the browser create during the SSL Handshake is symmetric. Server sends a copy of its asymmetric public key. Browser creates a symmetric session key and encrypts it with the server’s asymmetric public key. Then sends it to the server.
How does SSL key exchange work?
SSL Certificate works on a TCP (Transmission Control Protocol) protocol to send data over the internet. After this exchange, the server sends a certificate (public key) to the client. The client confirms the certificate, creates pre-master secret for the session, and encrypts the session with the server’s public key.
Does SSL use AES-256?
SSL uses symmetric cryptography using the session key after the initial handshake is done. The most widely used symmetric algorithms are AES-128, AES-192 and AES-256.
How does browser generate symmetric key during SSL handshake?
I have a small confusion on SSL handshake between browser and server in a typical https web scenario: What I have understood so far is that in the process of SSL handshake, client (browser in this case) encrypts a randomly selected symmetric key with the public key (certificate received from server).
How does SSL connection protocol work with self signed certificate?
When the server uses a self-signed certificate, the client cannot transfer any trust from a known CA in order to ascertain that the received self-signed certificate is the genuine thing, and not an imitation from some active attacker.
Can a client generate the same session key as a server?
Now both client and server have each other’s random values and “pre-master secret”, so basing on this information they can both generate the same session key and start using it in encrypting the following messages. See detailed protocol description for more in-depth explanation.
How does the client generate the pre master secret?
The client generates the 48 byte “pre-master secret” random value. The client pads these bytes with random data to make the input equal to 128 bytes. The client encrypts it with server’s public key and sends it to the server. The PRF is the “Pseudo-Random Function” that’s also defined in the spec and is quite clever.