Which of the following modes of operation in DES is used for operating?

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Which of the following modes of operation in DES is used for operating?

A. Cipher Feedback Mode (CFB)

B. Cipher Block chaining (CBC)

C. Electronic code book (ECB)

D. Output Feedback Modes (OFB)

Mainly, the Electronic codebook mode is used for operating on short data as the same key is used for each block in this algorithm. Thus convert in Plain Text lead to repetitions in Cipher Text in cryptography.

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What is the output of the N 1024-bit blocks from the Nth stage in this?

A. 512 bits

B. 1024 bits

C. N x 1024bits

D. N x 512 bits

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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

Discuss this answer

Codes and ciphers are different ways to _____ a message.

A. Encrypt

B. Decrypt

C. Both A and B

D. All of the mentioned above

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With symmetric key algorithms, the ____ key is used for the encryption and decryption of data.

A. Different

B. Same

C. Both A and B

D. None of the mentioned above

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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 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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____ is the message or data that can be readable by the sender.

A. Edited

B. Main Text

C. Plain text

D. All of the mentioned 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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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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Cipher block chaining or CBC is an advancement made on _____.

A. Electronic Code Book

B. Decrypted code

C. System engineering

D. All of the mentioned above

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In the case of symmetric key encryption, the secret key that both the parties possess can be anything such as a _______.

A. Passcode or a password

B. Developed code

C. Network set

D. None 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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How many elements are used in cryptography tools?

A. 1

B. 4

C. 6

D. 3

Discuss this answer

_____ and encryption is two separate cryptographic processes.

A. Hashing

B. Decryption

C. Processing

D. None of the mentioned above

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What is the output of a cryptographic hash function means?

A. A variable set of bits

B. A fixed set of bits, derived from one-way mathematical operations

C. An output which may be easily discovered by an adversary

D. Outputs of such functions are of no importance

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Which of the following cipher techniques include the involvement of matrix operations in their algorithms of encryption and decryption?

A. Hill Cipher

B. Playfair cipher

C. Both a and b

D. None of the above

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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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To encrypt the plaintext, a cryptographic algorithm works in combination with a key...

A. Word, number, or phrase

B. Special Symbols

C. Function Keys

D. All of these

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Decryption is a process to unveil the ______.

A. Unsecured data

B. Secured data

C. Insecure

D. None of the mentioned above

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With reference to Cipher Feedback (CFB) Mode, amongst which of the following is /are true,

A. Each ciphertext block gets 'fed back' into the encryption process

B. Encrypt the next plaintext block

C. Both A and B

D. None of the mentioned above

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What is the full-form of RSA in the RSA encryption technique?

A. Round Security Algorithm

B. Rivest, Shamir, Adleman

C. Robert, Shamir, Addie

D. None of the above

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Which is the cryptographic protocol that is used to protect an HTTP connection?

A. Resource reservation protocol

B. SCTP

C. TLS

D. ECN

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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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Basically, in SHA-512, the message is divided into blocks of size ___ bits for the hash computation.

A. 1024

B. 512

C. 256

D. 1248

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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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The greatest threat is to public cryptography or asymmetric algorithms used for ____.

A. Digital signatures and

B. Key exchange

C. Both A and B

D. None of the mentioned above

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Which of the following are used to create a message digest by the network security protocols?

A. RSA

B. SHA-1

C. DES

D. MD5

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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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You are supposed to use hill cipher for encryption technique. You are provided with the following matrix,
Is the given matrix 'A', a valid key to be used for encryption?

A. Yes

B. No

C. Can't be determined

D. Data insufficient

Discuss this answer

The private key in asymmetric key cryptography is kept by

A. Sender

B. Receiver

C. Sender and receiver

D. All the connected devices to the network

Discuss this answer

Accepted Answer

C. Electronic code book (ECB)

Which of the following modes of operation in DES is used for operating?

Correct Answer :

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Related Questions

What is the output of the N 1024-bit blocks from the Nth stage in this?

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

Codes and ciphers are different ways to _____ a message.

With symmetric key algorithms, the ____ key is used for the encryption and decryption of data.

Block ciphers accumulate symbols in a message of a ______.

Which of the following ciphers uses asymmetric key cryptography?

____ is the message or data that can be readable by the sender.

International Data Encryption Algorithm (IDEA) was developed by

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

Cipher block chaining or CBC is an advancement made on _____.

In the case of symmetric key encryption, the secret key that both the parties possess can be anything such as a _______.

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?

How many elements are used in cryptography tools?

_____ and encryption is two separate cryptographic processes.

What is the output of a cryptographic hash function means?

Which of the following cipher techniques include the involvement of matrix operations in their algorithms of encryption and decryption?

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

To encrypt the plaintext, a cryptographic algorithm works in combination with a key...

Decryption is a process to unveil the ______.

With reference to Cipher Feedback (CFB) Mode, amongst which of the following is /are true,

What is the full-form of RSA in the RSA encryption technique?

Which is the cryptographic protocol that is used to protect an HTTP connection?

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

Basically, in SHA-512, the message is divided into blocks of size ___ bits for the hash computation.

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

The greatest threat is to public cryptography or asymmetric algorithms used for ____.

Which of the following are used to create a message digest by the network security protocols?

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

You are supposed to use hill cipher for encryption technique. You are provided with the following matrix,
Is the given matrix 'A', a valid key to be used for encryption?

The private key in asymmetric key cryptography is kept by

Also checkout

Which of the following modes of operation in DES is used for operating?

Correct Answer :

Show all Computer Cryptography MCQ

Related Questions

What is the output of the N 1024-bit blocks from the Nth stage in this?

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

Codes and ciphers are different ways to _____ a message.

With symmetric key algorithms, the ____ key is used for the encryption and decryption of data.

Block ciphers accumulate symbols in a message of a ______.

Which of the following ciphers uses asymmetric key cryptography?

____ is the message or data that can be readable by the sender.

International Data Encryption Algorithm (IDEA) was developed by

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

Cipher block chaining or CBC is an advancement made on _____.

In the case of symmetric key encryption, the secret key that both the parties possess can be anything such as a _______.

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?

How many elements are used in cryptography tools?

_____ and encryption is two separate cryptographic processes.

What is the output of a cryptographic hash function means?

Which of the following cipher techniques include the involvement of matrix operations in their algorithms of encryption and decryption?

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

To encrypt the plaintext, a cryptographic algorithm works in combination with a key...

Decryption is a process to unveil the ______.

With reference to Cipher Feedback (CFB) Mode, amongst which of the following is /are true,

What is the full-form of RSA in the RSA encryption technique?

Which is the cryptographic protocol that is used to protect an HTTP connection?

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

Basically, in SHA-512, the message is divided into blocks of size ___ bits for the hash computation.

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

The greatest threat is to public cryptography or asymmetric algorithms used for ____.

Which of the following are used to create a message digest by the network security protocols?

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

You are supposed to use hill cipher for encryption technique. You are provided with the following matrix,Is the given matrix 'A', a valid key to be used for encryption?

The private key in asymmetric key cryptography is kept by

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

You are supposed to use hill cipher for encryption technique. You are provided with the following matrix,
Is the given matrix 'A', a valid key to be used for encryption?