Cryptography Objective Questions and Answers

This cryptography quiz contains carefully curated objective questions with correct answers and clear explanations. It is designed for developers, security learners, and interview preparation, covering modern encryption, hashing, authentication, and security best practices.

Practice Cryptography MCQs with Detailed Explanations

Answer at least 12 questions to submit.

46

Which cryptographic operation verifies data authenticity?

Medium
47

What is the purpose of a private key?

Easy
48

Which algorithm is best suited for mobile devices?

Medium
49

Which protocol uses certificates for trust?

Easy
50

Which encryption type uses the same key for encryption and decryption?

Easy
51

What is the purpose of a certificate authority?

Easy
52

Which algorithm is resistant to quantum attacks?

Hard
53

Which attack involves intercepting communication?

Easy
54

Which cryptographic function is one-way?

Easy
55

Which algorithm is used for generating digital certificates?

Medium
56

What does encryption protect against?

Easy
57

Which algorithm is commonly used in blockchain hashing?

Easy
58

What is the main goal of cryptography?

Easy
59

Which encryption is faster for large data?

Medium
60

Which cryptographic practice improves password security the most?

Easy