Cipher Feedback Mode is given as feedback to the ____ of encryption with some new specifications.
Next block
Previous block
Middle block
All of the mentioned above
Correct Answer :
A. Next block
Cipher Feedback Mode is provided as feedback to the following block of encryption with some new specifications, and it is used as a feedback mechanism.
Related Questions
Which of the following ciphers is a block cipher?
Caesar cipher
Vernam cipher
Playfair cipher
None of the above
Cipher Feedback Mode is given as feedback to the ____ of encryption with some new specifications.
Next block
Previous block
Middle block
All of the mentioned 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
When a hash function is used to provide message authentication, the hash function value is called to as:
Message Field
Message Digest
Message Score
Message Leap
Which possible Attacks in Quantum Cryptography can take place?
Possible Attacks in Quantum Cryptography and Birthday Attack
Birthday attack and Boomerang attack
Brute force attack and Faked-State-Attack
Possible Attacks in Quantum Cryptography and Faked-State Attack
_____ ciphers encrypt uniformly sized blocks of data.
Set
Block
Rack
All of the mentioned above
RSA algorithm is ____ cryptography algorithm.
Systematic
Symmetric
Asymmetric
None of the mentioned above
Which of the following is not a principle of data security?
Data Confidentiality
Data Integrity
Authentication
None of the above
Cipher in cryptography is
Encrypted message
Algorithm for performing encryption and decryption
Both algorithm for performing encryption and decryption and encrypted message
Decrypted message
We are provided the plain text SUN. You need to convert the given plain text into ciphertext under the Ceasar cipher encryption technique. Which of the following options is the correct ciphertext for the given text if the key is 2?
UWP
NUS
WUP
QSL
Hash functions are used in ___ and have variable levels of complexity and difficulty.
System approach
Cyber safe
Cryptography
None of the mentioned above
Amongst which of the following is/ are true with reference to step-by-step breakdown of the process of quantum cryptography,
The sender sends a photon through a polarizer with randomly assigned polarizations and bit assignment
Photon uses a beam splitter that can be horizontal, vertical, or diagonal to decode or read the polarization of each photon
Receiver tells the sender the random assignments of a beam splitter for each photon in the same sequence it was sent
All of the mentioned above
How many sub-keys in the total are used by the IDEA for encrypting the plain text into ciphertext?
64 sub- keys
48 sub- keys
52 sub- keys
Only one key and no subkeys
What is the block size of plain text in SHA- 512 algorithm?
512 bits
1024 bits
2048 bits
None of the above
Which of the following security services cannot be achieved using the Hash functions?ORWhich of the following is not possible through hash value?
Password Check
Data Integrity check
Digital Signatures
Data retrieval in its original form
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?
Hash value
Hash Code
Message Digest
All 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
Codes and ciphers are different ways to _____ a message.
Encrypt
Decrypt
Both A and B
All of the mentioned above
_____ and encryption is two separate cryptographic processes.
Hashing
Decryption
Processing
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
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
Which of the following cipher techniques include the involvement of matrix operations in their algorithms of encryption and decryption?
Hill Cipher
Playfair cipher
Both a and b
None of the above
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
Public key cryptography is a ... cryptosystem
Symmetric
Asymmetric
Symmetric & Asymmetric both
None of these
ElGamal encryption system is an asymmetric key encryption algorithm.
Public-key cryptography
Private-key cryptography
Both
None 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
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
In the case of symmetric key encryption, the secret key that both the parties possess can be anything such as a _______.
Passcode or a password
Developed code
Network set
None of the mentioned above
The process of decryption of an AES ciphertext is similar to the encryption process in the ______.
Reverse order
Next order
Both A and B
All of the mentioned above
For which of the following should EBC (Electronic Code Book) process not be used for encryption?
For large block sizes
For fixed block sizes
For small block sizes
None of the above