Hash functions are used in ___ and have variable levels of complexity and difficulty.
System approach
Cyber safe
Cryptography
None of the mentioned above
Correct Answer :
C. Cryptography
When it comes to cryptography, hash functions are used, and their levels of complexity and difficulty might vary. Hash functions are utilized in a variety of applications, including cryptocurrency, password security, and communication security. As data structures in computing systems, hash functions are frequently employed to perform tasks such as verifying the integrity of communications and authenticating information.
Related Questions
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
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
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
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
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
Which of the following is not a type of symmetric-key cryptography technique?
Caesar cipher
Data Encryption Standard (DES)
Diffie Hellman cipher
Playfair cipher
A mechanism used to encrypt and decrypt data.
Cryptography
Algorithm
Data flow
None of these
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 is a mode of operation for the Block ciphers in cryptography?
Electronic Code Book (ECB)
Cipher Block Chaining (CBC)
Counter (CTR) mode
All 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
Digital Signatures authenticates the sender by appending the original message with the ____ digest.
Decrypted message
Encrypted message
Systematic approach
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
Quantum cryptography is the science of exploiting quantum mechanical properties to perform _____.
Cryptographic system
Cryptographic tasks
Decryption system
None of the mentioned above
A cryptographic hash function is an equation used to verify the ____ of data.
Variety
Validity
Veracity
None of the mentioned above
How many elements are used in cryptography tools?
1
4
6
3
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 greatest threat is to public cryptography or asymmetric algorithms used for ____.
Digital signatures and
Key exchange
Both A and B
None 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
Cryptographic hashing provides a barrier to potential _______.
Attackers
Sender
Receiver
None of the mentioned above
Which of the following options is not correct according to the definition of the Hash Function?
Hash Functions are mathematical functions
They compress the input values
The hash functions work on arbitrary length input but produces fixed length output.
None of the above
_____ ciphers encrypt uniformly sized blocks of data.
Set
Block
Rack
All 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
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
Using Rivest, Shamir, Adleman cryptosystem with p=7 and q=9. Encrypt M=24 to find ciphertext. The Ciphertext is:
42
93
114
103
Which one of the following algorithms is not used in asymmetric-key cryptography?
DSA algorithm
Electronic code book algorithm
Diffie-Hellman algorithm
RSA algorithm
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
Which of the following security attacks is not an active attack? ORWhich of the following attacks is a passive attack?
Masquerade
Modification of message
Denial of service
Traffic analysis
Which is the cryptographic protocol that is used to protect an HTTP connection?
Resource reservation protocol
SCTP
TLS
ECN
Cipher in cryptography is
Encrypted message
Algorithm for performing encryption and decryption
Both algorithm for performing encryption and decryption and encrypted message
Decrypted message
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