Codes and ciphers are different ways to _____ a message.

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Codes and ciphers are different ways to _____ a message.

A. Encrypt

B. Decrypt

C. Both A and B

D. All of the mentioned above

Codes and cyphers are two separate methods of encrypting and decrypting messages. Using a code, you may make any message less meaningful by substituting each word with another that has a different meaning.

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Cipher Feedback Mode is given as feedback to the ____ of encryption with some new specifications.

A. Next block

B. Previous block

C. Middle block

D. All of the mentioned above

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_ and __ protocol models can be extended to Entangled particles theory.

A. SARG04 and HTTP

B. FTP and SSP

C. SARG04 and SSP

D. HTTP and FTP

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Block ciphers accumulate symbols in a message of a ______.

A. Fixed size

B. Variable

C. Integration

D. All of the mentioned above

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Which of the following options correctly defines the Brute force attack?

A. Brutally forcing the user to share the useful information like pins and passwords.

B. Trying every possible key to decrypt the message.

C. One entity pretends to be some other entity

D. The message or information is modified before sending it to the receiver.

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Which of the following ciphers uses asymmetric key cryptography?

A. Rail Fence Cipher

B. Data Encryption Standard (DES)

C. Diffie Hellman Cipher

D. None of the above

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Amongst which of the following is/ are true with reference to step-by-step breakdown of the process of quantum cryptography,

A. The sender sends a photon through a polarizer with randomly assigned polarizations and bit assignment

B. Photon uses a beam splitter that can be horizontal, vertical, or diagonal to decode or read the polarization of each photon

C. Receiver tells the sender the random assignments of a beam splitter for each photon in the same sequence it was sent

D. All of the mentioned above

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The number of rounds in the AES algorithm depends upon the key size being used.Which among the following shows a correct relation between the size of the key used and the number of rounds performed in the AES algorithm?

A. 128 key size: 10 rounds

B. 192 key size: 12 rounds

C. 256 key size: 14 rounds

D. All of the above

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Which of the following is a mode of operation for the Block ciphers in cryptography?

A. Electronic Code Book (ECB)

B. Cipher Block Chaining (CBC)

C. Counter (CTR) mode

D. All of the above

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Which of the following options is not correct according to the definition of the Cipher Block Chaining (CBC)?

A. CBC is a mode of operation for stream ciphers.

B. Initialization vector (IV) is used in CBC in the initial phase.

C. It has better resistive nature towards cryptanalysis than ECB

D. None of the above

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Which of the following is not a property of Hash Function?

A. Pre-Image Resistance

B. Compression

C. Fixed Length Output

D. None of the above

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The above steps are performed in each round of which of the following ciphers?

A. Rail fence cipher

B. Data Encryption Standard (DES)

C. Advance Encryption Standard (AES)

D. None of the above

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A mechanism used to encrypt and decrypt data.

A. Cryptography

B. Algorithm

C. Data flow

D. None of these

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The Hash Function takes an input of arbitrary length and converts it into a fixed length output.Which of the following names can we use for denoting the output of the hash function?

A. Hash value

B. Hash Code

C. Message Digest

D. All of the above

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Which of the following options is not correct according to the definition of the Hash Function?

A. Hash Functions are mathematical functions

B. They compress the input values

C. The hash functions work on arbitrary length input but produces fixed length output.

D. None of the above

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International Data Encryption Algorithm (IDEA) was developed by

A. Xuejia Lai and James Massey

B. Xuejia Lai and Bruce Schneier

C. Xuejia Lai and Carlisle Adams

D. Xuejia Lai and Stafford Tavares

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Which of the following modes of operations can be followed for both stream ciphers as well as block ciphers?

A. CBC (Cipher Block Chaining)

B. ECB (Electronic Code Book)

C. CFB (Cipher text Feed Back)

D. All of the above

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Which of the following security attacks is not an active attack? ORWhich of the following attacks is a passive attack?

A. Masquerade

B. Modification of message

C. Denial of service

D. Traffic analysis

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Public key cryptography is a ... cryptosystem

A. Symmetric

B. Asymmetric

C. Symmetric & Asymmetric both

D. None of these

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Which of the following is /are offered by the Hash functions?

A. Authentication

B. Non repudiation

C. Data Integrity

D. All of the above

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The DES (Data Encryption Standard) cipher follows the fiestal structure. Which of the following properties are not shown by the fiestal structure?

A. The input text is divided into two parts: one being left half and another one being right half.

B. Swapping of the left and right halves are performed after each round.

C. The plain text is converted into a matrix form first

D. None of the above

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Post-Quantum Cryptography is a classical cryptographic scheme that is conjectured to be secure against ____.

A. Quantum adversaries

B. Quantum integration

C. Quantum hash

D. None of the mentioned above

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Amongst which of the following is / are true with reference to the rounds in AES

A. Byte Substitution

B. Shift Row

C. Mix Column and Key Addition

D. All of the mentioned above

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A cryptographic hash function is an equation used to verify the ____ of data.

A. Variety

B. Validity

C. Veracity

D. None of the mentioned above

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All the below-stated processes are performed in the AES (Advanced Encryption Standard) Algorithm. Which of the following process(s) are not performed in the final round of the AES?
a) Substitution bytes
b) Shift rows
c) Mix columns
d) Add round key
Options

A. i.

B. iii.

C. All of the mentioned

D. None of the mentioned

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Which of the following is not a type of symmetric-key cryptography technique?

A. Caesar cipher

B. Data Encryption Standard (DES)

C. Diffie Hellman cipher

D. Playfair cipher

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Which of the following properties are the characteristic properties of a block cipher technique which differs from stream cipher?

A. Avalanche effect

B. Completeness

C. Both a. and b.

D. None of the above

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Data encryption standard is a block cipher and encrypts data in blocks of size of _____ each.

A. 16 bits

B. 64 bits

C. 32 bits

D. All of the mentioned above

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Study with quantum computers of future being expected to solve the discrete logarithmic problem and the popularly know cryptography methods such as AES, RSA, DES, quantum cryptography becomes which solution?

A. Quantum Solution

B. Foreseen Solution

C. Cryptographic Solution

D. Block Cipher Solution

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For which of the following should EBC (Electronic Code Book) process not be used for encryption?

A. For large block sizes

B. For fixed block sizes

C. For small block sizes

D. None of the above

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Encryption algorithms are divided into two categories based on the ______.

A. Output type

B. Input type

C. Process type

D. All of the mentioned above

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Accepted Answer

C. Both A and B

Codes and ciphers are different ways to _____ a message.

Correct Answer :

Show all Computer Cryptography MCQ

Related Questions

Cipher Feedback Mode is given as feedback to the ____ of encryption with some new specifications.

_ and __ protocol models can be extended to Entangled particles theory.

Block ciphers accumulate symbols in a message of a ______.

Which of the following options correctly defines the Brute force attack?

Which of the following ciphers uses asymmetric key cryptography?

Amongst which of the following is/ are true with reference to step-by-step breakdown of the process of quantum cryptography,

The number of rounds in the AES algorithm depends upon the key size being used.Which among the following shows a correct relation between the size of the key used and the number of rounds performed in the AES algorithm?

Which of the following is a mode of operation for the Block ciphers in cryptography?

Which of the following options is not correct according to the definition of the Cipher Block Chaining (CBC)?

Which of the following is not a property of Hash Function?

The above steps are performed in each round of which of the following ciphers?

A mechanism used to encrypt and decrypt data.

The Hash Function takes an input of arbitrary length and converts it into a fixed length output.Which of the following names can we use for denoting the output of the hash function?

Which of the following options is not correct according to the definition of the Hash Function?

International Data Encryption Algorithm (IDEA) was developed by

Which of the following modes of operations can be followed for both stream ciphers as well as block ciphers?

Which of the following security attacks is not an active attack? ORWhich of the following attacks is a passive attack?

Public key cryptography is a ... cryptosystem

Which of the following is /are offered by the Hash functions?

The DES (Data Encryption Standard) cipher follows the fiestal structure. Which of the following properties are not shown by the fiestal structure?

Post-Quantum Cryptography is a classical cryptographic scheme that is conjectured to be secure against ____.

Amongst which of the following is / are true with reference to the rounds in AES

A cryptographic hash function is an equation used to verify the ____ of data.

All the below-stated processes are performed in the AES (Advanced Encryption Standard) Algorithm. Which of the following process(s) are not performed in the final round of the AES?
a) Substitution bytes
b) Shift rows
c) Mix columns
d) Add round key
Options

Which of the following is not a type of symmetric-key cryptography technique?

Which of the following properties are the characteristic properties of a block cipher technique which differs from stream cipher?

Data encryption standard is a block cipher and encrypts data in blocks of size of _____ each.

Study with quantum computers of future being expected to solve the discrete logarithmic problem and the popularly know cryptography methods such as AES, RSA, DES, quantum cryptography becomes which solution?

For which of the following should EBC (Electronic Code Book) process not be used for encryption?

Encryption algorithms are divided into two categories based on the ______.

Also checkout

Codes and ciphers are different ways to _____ a message.

Correct Answer :

Show all Computer Cryptography MCQ

Related Questions

Cipher Feedback Mode is given as feedback to the ____ of encryption with some new specifications.

_____ and ______ protocol models can be extended to Entangled particles theory.

Block ciphers accumulate symbols in a message of a ______.

Which of the following options correctly defines the Brute force attack?

Which of the following ciphers uses asymmetric key cryptography?

Amongst which of the following is/ are true with reference to step-by-step breakdown of the process of quantum cryptography,

The number of rounds in the AES algorithm depends upon the key size being used.Which among the following shows a correct relation between the size of the key used and the number of rounds performed in the AES algorithm?

Which of the following is a mode of operation for the Block ciphers in cryptography?

Which of the following options is not correct according to the definition of the Cipher Block Chaining (CBC)?

Which of the following is not a property of Hash Function?

The above steps are performed in each round of which of the following ciphers?

A mechanism used to encrypt and decrypt data.

The Hash Function takes an input of arbitrary length and converts it into a fixed length output.Which of the following names can we use for denoting the output of the hash function?

Which of the following options is not correct according to the definition of the Hash Function?

International Data Encryption Algorithm (IDEA) was developed by

Which of the following modes of operations can be followed for both stream ciphers as well as block ciphers?

Which of the following security attacks is not an active attack? ORWhich of the following attacks is a passive attack?

Public key cryptography is a ... cryptosystem

Which of the following is /are offered by the Hash functions?

The DES (Data Encryption Standard) cipher follows the fiestal structure. Which of the following properties are not shown by the fiestal structure?

Post-Quantum Cryptography is a classical cryptographic scheme that is conjectured to be secure against ____.

Amongst which of the following is / are true with reference to the rounds in AES

A cryptographic hash function is an equation used to verify the ____ of data.

All the below-stated processes are performed in the AES (Advanced Encryption Standard) Algorithm. Which of the following process(s) are not performed in the final round of the AES?a) Substitution bytesb) Shift rowsc) Mix columnsd) Add round keyOptions

Which of the following is not a type of symmetric-key cryptography technique?

Which of the following properties are the characteristic properties of a block cipher technique which differs from stream cipher?

Data encryption standard is a block cipher and encrypts data in blocks of size of _____ each.

Study with quantum computers of future being expected to solve the discrete logarithmic problem and the popularly know cryptography methods such as AES, RSA, DES, quantum cryptography becomes which solution?

For which of the following should EBC (Electronic Code Book) process not be used for encryption?

Encryption algorithms are divided into two categories based on the ______.

Also checkout

_ and __ protocol models can be extended to Entangled particles theory.

All the below-stated processes are performed in the AES (Advanced Encryption Standard) Algorithm. Which of the following process(s) are not performed in the final round of the AES?
a) Substitution bytes
b) Shift rows
c) Mix columns
d) Add round key
Options