tls1.3 state machine
时间: 2024-06-04 15:07:28 浏览: 17
TLS 1.3 (Transport Layer Security) uses a state machine to manage the handshake process between the client and server. The state machine defines the various states that the handshake can be in, as well as the transitions between those states.
Here is a simplified version of the TLS 1.3 state machine:
1. Initial state: ClientHello
- The client sends a ClientHello message to initiate the handshake.
2. Waiting for ServerHello
- The client waits for the server to respond with a ServerHello message.
3. Waiting for Certificate
- The server sends its certificate chain to the client.
4. Waiting for CertificateVerify
- The server sends a CertificateVerify message to prove the authenticity of its certificate.
5. Waiting for Finished
- Both the client and server exchange Finished messages to confirm that the handshake is complete.
6. Handshake complete
- The handshake is complete and both parties can begin sending encrypted data.
Each state has certain conditions that must be met before transitioning to the next state. For example, in the Waiting for Certificate state, the client must verify the server's certificate before continuing to the next state.
TLS 1.3 also includes several optional extensions that can modify the state machine. However, the basic state machine remains the same for most TLS 1.3 handshakes.