: Ensuring only authorized users can access information.

Distinguish clearly between active and passive attacks. Speaker Notes & Presentation Delivery Tips

A hash function takes an arbitrary-length block of data and returns a fixed-size bit string (the hash value). Kahate emphasizes the properties of secure hash functions: one-way property (pre-image resistance), weak collision resistance, and strong collision resistance. Key algorithms discussed include:

Preventing denial of participation in a communication.

Flags abnormal behavior deviations from baselines.

Uses polynomial multiplication modulo x^4 + 1.

: The concept of a single shared secret key for encryption and decryption.