Many Symmetric Block Encryption Algorithms Including DES Have a Structure

question 28

Short Answer

Many symmetric block encryption algorithms including DES have a structure first described by _________ of IBM in 1973.

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Definitions:

Capacity

The legal ability or competency of a person or entity to enter into binding contracts or perform certain acts.

Illegal Clause

A provision in a contract that is prohibited by law and therefore unenforceable.

Sever

To cut off or divide property interests or legal relationships.

Enforce

means to compel observance of or compliance with a law, rule, or obligation.