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

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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

All the first three options obey to the definition of the Hash function. None of the mentioned options fall apart form it. Therefore, the correct answer is none of the above.

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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

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Which of the following is the main disadvantage of the ECB (Electronic Code Book)?orWhich of the following is the major drawback of ECB?

A. It requires large block size

B. Padding is done to make the plain text divisible into blocks of fixed size

C. It is prone to cryptanalysis since there is a direct relationship between plain text and cipher text.

D. None of the above

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How many sub-keys in the total are used by the IDEA for encrypting the plain text into ciphertext?

A. 64 sub- keys

B. 48 sub- keys

C. 52 sub- keys

D. Only one key and no subkeys

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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

Discuss this answer

Hash functions are mathematical functions that transform or map a given set of data into a bit string of fixed size, also known as the hash value.

A. Hash value

B. Map value

C. Both A and B

D. None of the mentioned above

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ElGamal encryption system is an asymmetric key encryption algorithm.

A. Public-key cryptography

B. Private-key cryptography

C. Both

D. None of these

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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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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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Public key cryptography is a ... cryptosystem

A. Symmetric

B. Asymmetric

C. Symmetric & Asymmetric both

D. None of these

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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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Which of the following security services cannot be achieved using the Hash functions?ORWhich of the following is not possible through hash value?

A. Password Check

B. Data Integrity check

C. Digital Signatures

D. Data retrieval in its original form

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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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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)

Discuss this answer

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

Discuss this answer

Block ciphers accumulate symbols in a message of a ______.

A. Fixed size

B. Variable

C. Integration

D. All of the mentioned above

Discuss this answer

_ 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

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 Data Encryption Standard (DES) is an example of a ...

A. Conventional cryptosystem

B. Asymmetric cryptosystem

C. Caesar's cryptosystem

D. All of these

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RSA algorithm is ____ cryptography algorithm.

A. Systematic

B. Symmetric

C. Asymmetric

D. None of the mentioned above

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When do we compare the AES with DES, which of the following functions from DES does not have an equivalent AES function in cryptography?

A. f function

B. permutation p

C. swapping of halves

D. xor of subkey with function f

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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

Discuss this answer

Which two principles of quantum mechanics on which quantum cryptography are dependent?

A. Heisenberg Uncertainty Principle and Photon Polarization Principle.

B. Fundamental Principle and Bohr's Model Principle

C. Momentum Principle and Photons Principle

D. Planck's Principle and Fundamental Principle

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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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When a hash function is used to provide message authentication, the hash function value is called to as:

A. Message Field

B. Message Digest

C. Message Score

D. Message Leap

Discuss this answer

Conventional cryptography also known as ... encryption.

A. asymmetric-key

B. logical-key

C. symmetric-key

D. None of these

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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

Discuss this answer

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

Discuss this answer

Which of the following cannot be chosen as a key in the Caesar cipher?

A. An integer

B. An alphabet (A-Z or a-z)

C. A string

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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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

Discuss this answer

Accepted Answer

D. None of the above

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

Correct Answer :

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Related Questions

The private key in asymmetric key cryptography is kept by

Which of the following is the main disadvantage of the ECB (Electronic Code Book)?orWhich of the following is the major drawback of ECB?

How many sub-keys in the total are used by the IDEA for encrypting the plain text into ciphertext?

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

Hash functions are mathematical functions that transform or map a given set of data into a bit string of fixed size, also known as the hash value.

ElGamal encryption system is an asymmetric key encryption algorithm.

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

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

Public key cryptography is a ... cryptosystem

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

Which of the following security services cannot be achieved using the Hash functions?ORWhich of the following is not possible through hash value?

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

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

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?

Block ciphers accumulate symbols in a message of a ______.

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

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

The Data Encryption Standard (DES) is an example of a ...

RSA algorithm is ____ cryptography algorithm.

When do we compare the AES with DES, which of the following functions from DES does not have an equivalent AES function in cryptography?

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

Which two principles of quantum mechanics on which quantum cryptography are dependent?

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

When a hash function is used to provide message authentication, the hash function value is called to as:

Conventional cryptography also known as ... encryption.

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

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

Which of the following cannot be chosen as a key in the Caesar cipher?

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

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

Also checkout

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

Correct Answer :

Show all Computer Cryptography MCQ

Related Questions

The private key in asymmetric key cryptography is kept by

Which of the following is the main disadvantage of the ECB (Electronic Code Book)?orWhich of the following is the major drawback of ECB?

How many sub-keys in the total are used by the IDEA for encrypting the plain text into ciphertext?

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

Hash functions are mathematical functions that transform or map a given set of data into a bit string of fixed size, also known as the hash value.

ElGamal encryption system is an asymmetric key encryption algorithm.

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

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

Public key cryptography is a ... cryptosystem

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

Which of the following security services cannot be achieved using the Hash functions?ORWhich of the following is not possible through hash value?

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

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

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?

Block ciphers accumulate symbols in a message of a ______.

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

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

The Data Encryption Standard (DES) is an example of a ...

RSA algorithm is ____ cryptography algorithm.

When do we compare the AES with DES, which of the following functions from DES does not have an equivalent AES function in cryptography?

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

Which two principles of quantum mechanics on which quantum cryptography are dependent?

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

When a hash function is used to provide message authentication, the hash function value is called to as:

Conventional cryptography also known as ... encryption.

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

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

Which of the following cannot be chosen as a key in the Caesar cipher?

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

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

Also checkout

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