Cryptography MCQs With Answers

________ is a process of transforming data into a fixed-size string of characters.

Which cryptographic algorithm is based on the difficulty of solving the discrete logarithm problem?

Which encryption algorithm is known for its use in securing wireless networks (WEP and WPA)?

What cryptographic principle states that the algorithm should remain secure even if the attacker knows how it works?

What cryptographic technique involves rearranging the letters in the plaintext to create the ciphertext?

________ is a cryptographic protocol that provides secure communication over a network.

What type of cryptographic attack targets weaknesses in the implementation of a cryptographic system?

Which cryptographic algorithm is used for generating digital signatures?

________ is a process that verifies the integrity and authenticity of a message.

Which type of attack exploits the mathematics behind modular arithmetic in cryptography?

Which cipher technique shifts the letters of the plaintext by a fixed number of positions in the alphabet?

What type of encryption uses the same key for both encryption and decryption?

Which cryptographic attack method uses a known set of plaintext/ciphertext pairs to deduce keys?

________ is an asymmetric encryption algorithm used for secure data transmission.

________ is a cryptographic protocol used for securing network management and monitoring.

________ is a type of cryptographic attack that aims to retrieve the original plaintext from a given ciphertext without knowledge of the key.

What is the primary purpose of digital signatures in cryptography?

________ is a cryptographic protocol used for securing email transmission.

________ is a block cipher encryption algorithm that operates on 128-bit blocks.

________ is a symmetric encryption algorithm used widely in the past but now considered insecure.

________ is a protocol used for securing voice over IP (VoIP) communications.

________ is a symmetric-key encryption algorithm known for its use in securing data at rest.

Which cryptographic protocol is used for secure web browsing?

What is the purpose of a nonce in cryptographic protocols?

What is the purpose of a salt in password hashing?

What cryptographic technique ensures data integrity but not confidentiality?

________ is a cryptographic hash function commonly used in digital signatures.

What is the purpose of a cryptographic nonce?

________ is a technique that involves hiding a message within another message.

Which key management technique uses two keys: a public key and a private key?

Which cryptographic protocol is used for secure shell access to a remote computer?

Which cryptographic protocol is used for securing database connections?

________ is a type of attack where an attacker tries every possible key until the correct one is found.

Which cryptographic algorithm is commonly used for encryption and decryption?

________ is an encryption mode that combines Electronic Codebook (ECB) with chaining.

________ is a key derivation function commonly used for securely hashing passwords.

________ is a method of ensuring confidentiality by adding random data to the plaintext before encryption.

________ is a protocol that provides secure communication over a computer network.

What is the process of converting plaintext into ciphertext called?

________ is a protocol used for securing terminal sessions.