Cryptography MCQs With Answers

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

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

What is the process of converting plaintext into ciphertext called?

What cryptographic technique ensures data integrity but not confidentiality?

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

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

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

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

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

What is the primary purpose of digital signatures in cryptography?

Which cryptographic protocol is used for secure web browsing?

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

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

Which cryptographic protocol is used for securing database connections?

________ is a cryptographic protocol used for securing email transmission.

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

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

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

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

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

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

What is the purpose of a nonce in cryptographic protocols?

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

________ is a protocol used for securing terminal sessions.

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

________ 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?

What is the purpose of a cryptographic nonce?

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

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

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

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

What is the purpose of a salt in password hashing?

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

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

Which cryptographic algorithm is used for generating digital signatures?

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

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

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

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