Feistel Proposed That We Can Approximate the Ideal Block Cipher

question 3

Multiple Choice

Feistel proposed that we can approximate the ideal block cipher by utilizing the concept of a __________ cipher,which is the execution of two or more simple ciphers in sequence in such a way that the final result or product is cryptographically stronger than any of the component ciphers.

• A)linear
• B)permutation
• C)differential
• D)product

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Definitions:

Fixed Manufacturing Overhead

Costs incurred during the production process that do not vary with the level of production, such as rent for factory buildings, salaries of plant managers, and depreciation of manufacturing equipment.

Budget Variance

The variance between what was expected to be spent or earned, according to the budget, and the real amount that was spent or received.

Predetermined Overhead Rate

A rate used to allocate manufacturing overhead to individual products or job orders, based on a specific activity base, such as labor hours or machine hours.

Fixed Component

The portion of total costs that remains unchanged regardless of the level of production or business activity.