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:

Current Ratio

A financial metric assessing a firm's capacity to meet its obligations due within the next year by dividing its current assets by its current liabilities.

Inventory

The total amount of goods and materials held by a company intended for sale or production.

Debt-Equity Ratio

A measure of a company's financial leverage calculated by dividing its total liabilities by shareholders' equity.

Debt-Equity Ratio

This ratio compares a company's total liabilities to its shareholder equity, providing insights into its financial leverage and risk.