ElGamal encryption system is an asymmetric key encryption algorithm.
Public-key cryptography
Private-key cryptography
Both
None of these
Correct Answer :
A. Public-key cryptography
The ElGamal encryption scheme in cryptography is an asymmetrical key encryption algorithm based on the Diffie-Hellman key exchange for public-key cryptography.
Related Questions
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
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
Basically, in SHA-512, the message is divided into blocks of size ___ bits for the hash computation.
1024
512
256
1248
A mechanism used to encrypt and decrypt data.
Cryptography
Algorithm
Data flow
None of these
Quantum cryptography is the science of exploiting quantum mechanical properties to perform _____.
Cryptographic system
Cryptographic tasks
Decryption system
None 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
Which of the following is not a principle of data security?
Data Confidentiality
Data Integrity
Authentication
None of the above
Amongst which of the following is / are true with reference to the rounds in AES
Byte Substitution
Shift Row
Mix Column and Key Addition
All of the mentioned 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
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
Decryption is a process to unveil the ______.
Unsecured data
Secured data
Insecure
None of the mentioned above
Which of the following is /are offered by the Hash functions?
Authentication
Non repudiation
Data Integrity
All of the above
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
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
To encrypt the plaintext, a cryptographic algorithm works in combination with a key...
Word, number, or phrase
Special Symbols
Function Keys
All of these
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
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
A cryptographic hash function is an equation used to verify the ____ of data.
Variety
Validity
Veracity
None of the mentioned 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
How many elements are used in cryptography tools?
1
4
6
3
Codes and ciphers are different ways to _____ a message.
Encrypt
Decrypt
Both A and B
All of the mentioned 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
Which of the following modes of operation in DES is used for operating?
Cipher Feedback Mode (CFB)
Cipher Block chaining (CBC)
Electronic code book (ECB)
Output Feedback Modes (OFB)
Which of the following is not a property of Hash Function?
Pre-Image Resistance
Compression
Fixed Length Output
None of the above
_____ and ______ protocol models can be extended to Entangled particles theory.
SARG04 and HTTP
FTP and SSP
SARG04 and SSP
HTTP and FTP
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
____ is the message or data that can be readable by the sender.
Edited
Main Text
Plain text
All of the mentioned above
Which of the following are used to create a message digest by the network security protocols?
RSA
SHA-1
DES
MD5
Block ciphers accumulate symbols in a message of a ______.
Fixed size
Variable
Integration
All of the mentioned above