Multiple choice technology architecture

Kerberos authenticates the user using which of the following

  1. Digital signatues

  2. One-way hash algorithms

  3. Symmetric encryption

  4. Assymetric encryption
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C Correct answer
Explanation

Kerberos uses symmetric encryption for user authentication. When a user first authenticates, their password is used to derive a symmetric key that is shared with the KDC. This symmetric key encrypts the initial authentication request and subsequent ticket exchanges. The symmetric key allows both the user and KDC to encrypt and decrypt messages, establishing trust without transmitting the password itself. Digital signatures (asymmetric encryption) are used in some PKI-based systems but not in core Kerberos authentication.

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