Information Assurance and Security: Encryption History

What is the origin of the word cryptography?

From the Greek words for hidden and to write

What is the most basic cryptographic problem?

Concealing communication between two parties

What was the Enigma rotor machine?

A complex mechanical and electromechanical machine for encryption

What developed in parallel with the development of cryptography?

The breaking of codes and ciphers Signup and view all the answers

When did secure cryptography largely become the preserve of governments?

Until recent decades Signup and view all the answers

How is encryption achieved in modern times?

By converting messages and data into digital gibberish using algorithms with keys Signup and view all the answers

Why is it more difficult to crack a code with a longer key?

Because longer keys have more possible combinations, making brute force attacks harder Signup and view all the answers

What is the value of a single binary unit of information, or bit?

0 or 1 Signup and view all the answers

What is the effective key length of the early US Government approved cypher DES?

56 bits Signup and view all the answers

What is a notable advance in the study of cryptography since World War II?

Introduction of asymmetric key cyphers Signup and view all the answers

What algorithms use two mathematically related keys for encryption of the same message?

Public-key algorithms Signup and view all the answers

What protocol led the way for online transactions to take place?

SSL protocol Signup and view all the answers

Before the introduction of AES, what was commonly used for encrypting information sent over the Internet?

Data Encryption Standard (DES) Signup and view all the answers

What does SSL stand for?

Secure Socket Layer Signup and view all the answers

Why did the need for encryption grow as wireless Internet connections became more common among households?

To prevent unauthorized access and protect privacy Signup and view all the answers

What is one significant learning outcome from the passage?

As technology advances, so does the quality of encryption Signup and view all the answers

Information Assurance and Security: Encryption History

Questions and Answers

What is the origin of the word cryptography?

What is the most basic cryptographic problem?

What was the Enigma rotor machine?

What developed in parallel with the development of cryptography?

When did secure cryptography largely become the preserve of governments?

How is encryption achieved in modern times?

Why is it more difficult to crack a code with a longer key?

What is the value of a single binary unit of information, or bit?

What is the effective key length of the early US Government approved cypher DES?

What is a notable advance in the study of cryptography since World War II?

What algorithms use two mathematically related keys for encryption of the same message?

What protocol led the way for online transactions to take place?

Before the introduction of AES, what was commonly used for encrypting information sent over the Internet?

What does SSL stand for?

Why did the need for encryption grow as wireless Internet connections became more common among households?

What is one significant learning outcome from the passage?

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Information Assurance and Security: Encryption History

Questions and Answers

What is the origin of the word cryptography?

What is the most basic cryptographic problem?

What was the Enigma rotor machine?

What developed in parallel with the development of cryptography?

When did secure cryptography largely become the preserve of governments?

How is encryption achieved in modern times?

Why is it more difficult to crack a code with a longer key?

What is the value of a single binary unit of information, or bit?

What is the effective key length of the early US Government approved cypher DES?

What is a notable advance in the study of cryptography since World War II?

What algorithms use two mathematically related keys for encryption of the same message?

What protocol led the way for online transactions to take place?

Before the introduction of AES, what was commonly used for encrypting information sent over the Internet?

What does SSL stand for?

Why did the need for encryption grow as wireless Internet connections became more common among households?

What is one significant learning outcome from the passage?

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