Cryptography MCQs with Answer

AdminFebruary 6, 2024

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What does SSL stand for?
A) Secure Socket Layer
B) Secure System Layer
C) Secure Software Layer
D) Secure Server Layer
Answer: A) Secure Socket Layer

Which encryption algorithm is commonly used for securing wireless networks?
A) AES
B) RSA
C) DES
D) WEP
Answer: D) WEP

What is the main purpose of using a cryptographic hash function?
A) Encryption
B) Authentication
C) Integrity
D) Compression
Answer: C) Integrity

Which key is used for encryption and decryption in symmetric-key cryptography?
A) Public key
B) Private key
C) Session key
D) Shared key
Answer: D) Shared key

Which cryptographic algorithm is widely used for digital signatures?
A) RSA
B) AES
C) DES
D) Diffie-Hellman
Answer: A) RSA

Which of the following is NOT a symmetric encryption algorithm?
A) AES
B) RSA
C) DES
D) 3DES
Answer: B) RSA

What is the process of converting plaintext into ciphertext called?
A) Decryption
B) Encoding
C) Hashing
D) Encryption
Answer: D) Encryption

Which encryption algorithm is known for its strength and efficiency and is widely used in various cryptographic applications?
A) RSA
B) AES
C) DES
D) Blowfish
Answer: B) AES

What is the primary purpose of a digital signature?
A) Authentication
B) Confidentiality
C) Integrity
D) Non-repudiation
Answer: D) Non-repudiation

Which type of encryption uses the same key for both encryption and decryption?
A) Symmetric-key encryption
B) Asymmetric-key encryption
C) Public-key encryption
D) Private-key encryption
Answer: A) Symmetric-key encryption

Which of the following is NOT a symmetric encryption algorithm?
A) RSA
B) AES
C) DES
D) Blowfish
Answer: A) RSA

What is the primary purpose of a digital certificate?
A) Encryption
B) Authentication
C) Compression
D) Decryption
Answer: B) Authentication

Which cryptographic algorithm is vulnerable to brute force attacks due to its small key size?
A) AES
B) RSA
C) DES
D) Diffie-Hellman
Answer: C) DES

What is the process of converting ciphertext into plaintext called?
A) Decryption
B) Encoding
C) Hashing
D) Encryption
Answer: A) Decryption

Which of the following is NOT a property of a secure cryptographic hash function?
A) Preimage resistance
B) Second preimage resistance
C) Collision resistance
D) Deterministic output
Answer: D) Deterministic output

Which encryption algorithm is commonly used for securing email communication?
A) RSA
B) AES
C) DES
D) PGP
Answer: D) PGP

Which cryptographic algorithm is used for generating symmetric keys securely over insecure communication channels?
A) RSA
B) AES
C) Diffie-Hellman
D) DES
Answer: C) Diffie-Hellman

Which of the following is NOT a component of public-key cryptography?
A) Public key
B) Private key
C) Shared key
D) Digital signature
Answer: C) Shared key

What is the primary purpose of a cryptographic nonce?
A) Authentication
B) Integrity
C) Non-repudiation
D) Randomness
Answer: D) Randomness

Which of the following is a block cipher encryption algorithm?
A) RSA
B) Diffie-Hellman
C) AES
D) ECC
Answer: C) AES

Which cryptographic algorithm is used for securing data transmission over the internet?
A) RSA
B) AES
C) SSL/TLS
D) Diffie-Hellman
Answer: C) SSL/TLS

Which encryption algorithm is based on the Diffie-Hellman key exchange protocol?
A) RSA
B) AES
C) ECC
D) ElGamal
Answer: D) ElGamal

Which of the following is NOT a security requirement in cryptography?
A) Confidentiality
B) Integrity
C) Scalability
D) Authentication
Answer: C) Scalability

What is the primary purpose of a cryptographic salt?
A) Authentication
B) Non-repudiation
C) Randomness
D) Integrity
Answer: C) Randomness

Which cryptographic algorithm is used for creating digital signatures in the DSA scheme?
A) RSA
B) AES
C) DES
D) SHA
Answer: D) SHA