Which of the following ciphers uses asymmetric key cryptography?
Rail Fence Cipher
Data Encryption Standard (DES)
Diffie Hellman Cipher
None of the above
Correct Answer :
C. Diffie Hellman Cipher
The Diffie Hellman cipher uses asymmetric key cryptography. It uses a pair of keys, one private and one public.
Related Questions
A mechanism used to encrypt and decrypt data.
Cryptography
Algorithm
Data flow
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
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
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
_____ and ______ protocol models can be extended to Entangled particles theory.
SARG04 and HTTP
FTP and SSP
SARG04 and SSP
HTTP and FTP
Digital Signatures authenticates the sender by appending the original message with the ____ digest.
Decrypted message
Encrypted message
Systematic approach
None of the mentioned 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
Which of the following ciphers uses asymmetric key cryptography?
Rail Fence Cipher
Data Encryption Standard (DES)
Diffie Hellman Cipher
None of the 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
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?
128 key size: 10 rounds
192 key size: 12 rounds
256 key size: 14 rounds
All of the above
Data encryption standard is a block cipher and encrypts data in blocks of size of _____ each.
16 bits
64 bits
32 bits
All of the mentioned above
Which of the following is not a type of symmetric-key cryptography technique?
Caesar cipher
Data Encryption Standard (DES)
Diffie Hellman cipher
Playfair cipher
Which is the cryptographic protocol that is used to protect an HTTP connection?
Resource reservation protocol
SCTP
TLS
ECN
An initialization vector (IV) or starting variable (SV) is a block of bits that is used by several modes to _____.
Randomize the decryption
Randomize the encryption
Minimize and maximize the randomization
None of the mentioned above
Amongst which of the following is/ are showing the goodness of electronic code book,
Parallel encryption of blocks of bits is possible
It is a faster way of encryption.
Simple way of the block cipher.
All of the mentioned above
With symmetric key algorithms, the ____ key is used for the encryption and decryption of data.
Different
Same
Both A and B
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
Which of the following ciphers is a block cipher?
Caesar cipher
Vernam cipher
Playfair cipher
None of the above
Which of the following options is not correct according to the definition of the Cipher Block Chaining (CBC)?
CBC is a mode of operation for stream ciphers.
Initialization vector (IV) is used in CBC in the initial phase.
It has better resistive nature towards cryptanalysis than ECB
None of the 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
What is the output of the N 1024-bit blocks from the Nth stage in this?
512 bits
1024 bits
N x 1024bits
N x 512 bits
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
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
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
Which of the following is not a property of Hash Function?
Pre-Image Resistance
Compression
Fixed Length Output
None of the above
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
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?
Quantum Solution
Foreseen Solution
Cryptographic Solution
Block Cipher Solution
_____ and encryption is two separate cryptographic processes.
Hashing
Decryption
Processing
None of the mentioned above
What is the block size of plain text in SHA- 512 algorithm?
512 bits
1024 bits
2048 bits
None of the above
A hash function is a _____ that converts a numerical input value into another compressed numerical value.
Abstract view
Mathematical function
Both A and B
None of the mentioned above