Five Modes of Operation Have Been Standardized by NISt for Use

question 37

Short Answer

Five modes of operation have been standardized by NISt for use with symmetric block ciphers such as DES and AES: electronic codebook mode, cipher block chaining mode, cipher feedback mode, __________, and counter mode.

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Definitions:

Memory Process

The series of processes involved in the encoding, storing, and retrieving of memories.

Retrieval

Retrieval is the process of accessing and bringing into consciousness information stored in memory. It is a critical aspect of the memory process.

Sensory Store

A very brief type of memory that holds incoming information from the senses for a very short duration, nearly half a second for visual information and a few seconds for auditory information.

Rehearsal

A cognitive process involving the repeated practice of material to be remembered, aiming to enhance memory retention.