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.

31.
Hard
Which attack targets encrypted data patterns?
32.
Easy
Which function converts plaintext into ciphertext?
33.
Easy
What does RSA stand for?
34.
Easy
Which algorithm is suitable for hashing large files?
35.
Easy
Which cryptographic tool hides data inside images?
36.
Medium
Which algorithm provides both encryption and authentication?
37.
Easy
Which algorithm is recommended over MD5 for hashing?
38.
Medium
What is the purpose of a nonce?
39.
Medium
Which algorithm is commonly used for secure APIs?
40.
Easy
Which cryptographic property ensures secrecy?
41.
Easy
Which attack attempts all possible keys?
42.
Medium
Which cryptographic algorithm is used for signing JWTs?
43.
Hard
Which algorithm provides forward secrecy?
44.
Medium
What does ECC offer compared to RSA?
45.
Easy
Which algorithm should NOT be used for password storage?
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