Exam 6: Advanced Encryption Standard

the AES cipher begins and ends with a(n) _________ stage because any other stage, applied at the beginning or end, is reversible without knowledge of the key and Would add no security.

(Multiple Choice)

4.8/5

(31)

Question 21

As with any block cipher, AES can be used to construct a message authentication code, and for this, only decryption is used.

(True/False)

4.7/5

(39)

Question 22

AES can be implemented very efficiently on an 8-bit processor.

(True/False)

4.9/5

(38)

Question 23

the final round of both encryption and decryption of the AES structure consists of __________ stages.

(Multiple Choice)

4.8/5

(31)

Question 24

A polynomial m(x) is called __________ if and only if m(x) cannot be expressed as a product of two polynomials, both of degree lower than that of m(x).

(Short Answer)

4.8/5

(29)

Question 25

In the AES structure both encryption and decryption ciphers begin with a(n) __________ stage, followed by nine rounds that each include all four stages, Followed by a tenth round of three stages.

(Multiple Choice)

4.9/5

(35)

Question 26

AES uses a Feistel structure.

(True/False)

4.7/5

(28)

Question 27

the first N - 1 rounds consist of four distinct transformation functions: SubBytes, ShiftRows, AddRoundKey, and __________ .

(Short Answer)

4.9/5

(35)

Question 28

the Advanced Encryption Standard was published by the __________ in 2001.

(Multiple Choice)

4.8/5

(28)

Question 29

the mix column transformation combined with the __________ transformation ensures that after a few rounds all output bits depend on all input bits.

(Short Answer)

4.7/5

(34)

Question 30

A __________ is a set in which you can do addition, subtraction, multiplication and division without leaving the set.

(Multiple Choice)

4.8/5

(36)

Question 31

the National Institute of Standards and technology chose the __________ design as the winning candidate for AES.

(Short Answer)

4.8/5

(32)

Question 32

the inverse add round key transformation is identical to the forward add round key transformation because the XOR operation is its own inverse.

(True/False)

4.8/5

(38)

Question 33

__________ affects the contents of bytes in State but does not alter byte sequence and does not depend on byte sequence to perform its transformation.

(Multiple Choice)

4.9/5

(32)

Question 34

In the Advanced Encryption Standard the decryption algorithm is identical to the encryption algorithm.

(True/False)

4.9/5

(37)

Question 35

the ordering of bytes within a matrix is by column.

(True/False)

4.8/5

(32)

Question 36

the AES key expansion algorithm takes as input a four-word (16-byte) key and produces a linear array of __________ words (176 bytes).

(Short Answer)

4.7/5

(36)

Question 37

the S-box is designed to be resistant to known cryptanalytic attacks.

(True/False)

4.8/5

(41)

Question 38

InvSubBytes is the inverse of ShiftRows.

(True/False)

4.9/5

(32)

Question 39

DES is a block cipher intended to replace AES for commercial applications.

(True/False)

4.9/5

(28)

Question 40

Showing 21 - 40 of 45

the AES cipher begins and ends with a(n) _________ stage because any other stage, applied at the beginning or end, is reversible without knowledge of the key and Would add no security.

As with any block cipher, AES can be used to construct a message authentication code, and for this, only decryption is used.

AES can be implemented very efficiently on an 8-bit processor.

the final round of both encryption and decryption of the AES structure consists of __________ stages.

A polynomial m(x) is called __________ if and only if m(x) cannot be expressed as a product of two polynomials, both of degree lower than that of m(x).

In the AES structure both encryption and decryption ciphers begin with a(n) __________ stage, followed by nine rounds that each include all four stages, Followed by a tenth round of three stages.

AES uses a Feistel structure.

the first N - 1 rounds consist of four distinct transformation functions: SubBytes, ShiftRows, AddRoundKey, and __________ .

the Advanced Encryption Standard was published by the __________ in 2001.

the mix column transformation combined with the __________ transformation ensures that after a few rounds all output bits depend on all input bits.

A __________ is a set in which you can do addition, subtraction, multiplication and division without leaving the set.

the National Institute of Standards and technology chose the __________ design as the winning candidate for AES.

the inverse add round key transformation is identical to the forward add round key transformation because the XOR operation is its own inverse.

__________ affects the contents of bytes in State but does not alter byte sequence and does not depend on byte sequence to perform its transformation.

In the Advanced Encryption Standard the decryption algorithm is identical to the encryption algorithm.

the ordering of bytes within a matrix is by column.

the AES key expansion algorithm takes as input a four-word (16-byte) key and produces a linear array of __________ words (176 bytes).

the S-box is designed to be resistant to known cryptanalytic attacks.

InvSubBytes is the inverse of ShiftRows.

DES is a block cipher intended to replace AES for commercial applications.

Computer and Network Security Concepts

Introduction to Number Theory

Classical Encryption Techniques

Block Cipher Operation

Random Bit Generation and Stream Ciphers

Public-Key Cryptography and Rsa

Other Public-Key Cryptosystems

Cryptographic Hash Functions

Message Authentication Codes

Digital Signatures

Lightweight Cryptography and Post-Quantum Cryptography

Cryptographic Key Management and Distribution

User Authentication

Wireless Network Security

Electronic Mail Security

Ip Security

Network Endpoint Security

Cloud Security

Internet of Things Iot Security

Filters