When do we compare the AES with DES, which of the following functions from DES does not have an equivalent AES function in cryptography?
f function
permutation p
swapping of halves
xor of subkey with function f
Correct Answer :
C. swapping of halves
Mainly, there is no equivalent to swapping of halves in the AES algorithm in cryptography.
Related Questions
RSA algorithm is ____ cryptography algorithm.
Systematic
Symmetric
Asymmetric
None of the mentioned above
What is the output of a cryptographic hash function means?
A variable set of bits
A fixed set of bits, derived from one-way mathematical operations
An output which may be easily discovered by an adversary
Outputs of such functions are of no importance
Cryptographic hashing provides a barrier to potential _______.
Attackers
Sender
Receiver
None of the mentioned above
Decryption is a process to unveil the ______.
Unsecured data
Secured data
Insecure
None of the mentioned above
In Cipher block chaining mode, the current plaintext block is added to the ____.
Previous ciphertext block
Next ciphertext block
Middle ciphertext block
None of the mentioned above
In the AES-128 algorithm there are mainly __________ similar rounds and _________ round is different from other round.
5 similar rounds having 2 pair ; every alternate
9 ; the last
8 ; the first and last
10 ; no
Post-Quantum Cryptography is a classical cryptographic scheme that is conjectured to be secure against ____.
Quantum adversaries
Quantum integration
Quantum hash
None of the mentioned above
ElGamal encryption system is an asymmetric key encryption algorithm.
Public-key cryptography
Private-key cryptography
Both
None of these
Which of the following is not a principle of data security?
Data Confidentiality
Data Integrity
Authentication
None of the above
Public key cryptography is a ... cryptosystem
Symmetric
Asymmetric
Symmetric & Asymmetric both
None of these
What is the full-form of RSA in the RSA encryption technique?
Round Security Algorithm
Rivest, Shamir, Adleman
Robert, Shamir, Addie
None of the above
Amongst which of the following is /are good for Hashes,
Password protection
Data integrity / file verification
Digital signatures and virus signatures
All of the mentioned above
Which of the following is the main disadvantage of the ECB (Electronic Code Book)?orWhich of the following is the major drawback of ECB?
It requires large block size
Padding is done to make the plain text divisible into blocks of fixed size
It is prone to cryptanalysis since there is a direct relationship between plain text and cipher text.
None of the above
Among the following given options, chose the strongest encryption technique?
DES ( Data Encryption Standard)
Double DES
Triple DES
AES (Advance Encryption Standard)
Security Goals of Cryptography are
Confidentiality
Authenticityn
Data integrityn
All of these
The above steps are performed in each round of which of the following ciphers?
Rail fence cipher
Data Encryption Standard (DES)
Advance Encryption Standard (AES)
None of the above
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
i.
iii.
All of the mentioned
None of the mentioned
International Data Encryption Algorithm (IDEA) was developed by
Xuejia Lai and James Massey
Xuejia Lai and Bruce Schneier
Xuejia Lai and Carlisle Adams
Xuejia Lai and Stafford Tavares
The DES (Data Encryption Standard) cipher follows the fiestal structure. Which of the following properties are not shown by the fiestal structure?
The input text is divided into two parts: one being left half and another one being right half.
Swapping of the left and right halves are performed after each round.
The plain text is converted into a matrix form first
None of the above
What does IDEA stand for in the world of cryptography?orThe IDEA word in the IDEA algorithm is the abbreviation for which of the following?
Independent Decryption Environment Analysis
International Defense Encryption Area
International Data Encryption Algorithm
None of the above
Cipher block chaining or CBC is an advancement made on _____.
Electronic Code Book
Decrypted code
System engineering
All of the mentioned above
Encryption algorithms are divided into two categories based on the ______.
Output type
Input type
Process type
All of the mentioned above
Which two principles of quantum mechanics on which quantum cryptography are dependent?
Heisenberg Uncertainty Principle and Photon Polarization Principle.
Fundamental Principle and Bohr's Model Principle
Momentum Principle and Photons Principle
Planck's Principle and Fundamental Principle
A key is a string of bits used by a cryptographic algorithm to transform plain text into ciphertext. Which of the following is capable of becoming a key in a cryptographic algorithm?
An integer values
A square matrix
An array of characters (i.e. a string)
All of the above
Which of the following ciphers is a block cipher?
Caesar cipher
Vernam cipher
Playfair cipher
None of the above
Which of the following is /are offered by the Hash functions?
Authentication
Non repudiation
Data Integrity
All of the above
Which of the following properties are the characteristic properties of a block cipher technique which differs from stream cipher?
Avalanche effect
Completeness
Both a. and b.
None of the above
With reference to Cipher Feedback (CFB) Mode, amongst which of the following is /are true,
Each ciphertext block gets 'fed back' into the encryption process
Encrypt the next plaintext block
Both A and B
None of the mentioned above
Which of the following is not a property of Hash Function?
Pre-Image Resistance
Compression
Fixed Length Output
None of the above
Which of the following cannot be chosen as a key in the Caesar cipher?
An integer
An alphabet (A-Z or a-z)
A string
None of the above