K

Question 1

KDC

Answer 1

Key Distribution Center

A centralized server that plays an essential role in the Kerberos network authentication protocol.

A network component that provides users with cryptographic keys and tickets. These tickets and keys allow users to securely access specific network resources.

Question 2

KEK

Answer 2

Key Encryption Key

AKA master key
AKA key-wrapping key

A cryptographic key that encrypts/decrypts other keys to protect their confidentiality. They are an essential extra layer of security when cryptographic keys are sent or stored, and are used in many areas, including: Secure email, Secure Shell (SSH), Internet protocols, and Hardware security modules (HSMs).