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A trusted entity that issues digital certificates used to verify the identity of the certificate holder and provide a public key.

The protocol used to establish secure communication between client and server, including agreement on cryptographic parameters.

A type of encryption where the same key is used to encrypt and decrypt the data; used in SSL/TLS after the handshake to secure data in transit.

Encryption that uses a pair of keys: a public key to encrypt data and a private key to decrypt it; it's a critical part of the SSL/TLS handshake.

A temporary symmetric key used during an SSL/TLS session to encrypt and decrypt data.

A cryptographic means to prove the authenticity and integrity of data, often a part of SSL/TLS certificates to ensure they haven't been tampered with.

Part of the encryption key pair that is publicly disclosed and used to encrypt data or verify digital signatures in SSL/TLS.

The secret part of an encryption key pair used for decrypting data and creating digital signatures in SSL/TLS.

A digital certificate that uses the X.509 public key infrastructure standard to create a hierarchy of trust for secure communications in SSL/TLS.

A set of algorithms that defines the encryption, authentication, and key exchange methods used within SSL/TLS protocols.

The predecessor to TLS; it's a protocol designed for securing data transfer over the internet between a client and a server.

The successor to SSL; a cryptographic protocol that provides security and data integrity for communication over networks.

A data file that digitally links a cryptographic key to an organization's details and is necessary for creating a secure SSL/TLS connection.

The latest version of the TLS protocol, providing enhanced security features and speed compared to its predecessors.

A feature within SSL/TLS that allows for constant communication between the client and server to keep the connection alive.

The first message sent by the client to begin the SSL/TLS handshake, specifying the SSL/TLS version, cipher suites, and other supported features.

The server's response to ClientHello, confirming the SSL/TLS version and cipher suite that will be used for the session.

A security feature in which the compromise of a single session's private keys does not compromise past sessions’ keys, protecting past communications.

A shared secret that has been previously exchanged between the two parties using a secure channel and is used to establish a secure connection.