A Kerberos encryption type (also known as an enctype) is a specific combination of a cipher algorithm with an integrity algorithm to provide both confidentiality and integrity to data.
What encryption does Kerberos use?
Kerberos uses symmetric key cryptography and requires trusted third-party authorization to verify user identities. Since Kerberos requires 3 entities to authenticate and has an excellent track record of making computing safer, the name really does fit.
What is the purpose of Kerberos?
Kerberos was designed to provide secure authentication to services over an insecure network. Kerberos uses tickets to authenticate a user and completely avoids sending passwords across the network.