Back to Library

Cryptography Foundations

Cryptography

A collection of factual questions regarding cryptographic algorithms, mathematical foundations, and security protocols.

cybersecurity mathematics encryption

10 Questions Medium Ages 5+ Aug 27, 2026

Practice Test PDF Answer Key PDF

Choose a Study Format

Quiz

Test your knowledge with multiple-choice questions and instant feedback.

Flashcards

Flip through cards to review terms, definitions and key concepts.

True or False

Quickly decide if statements are true or false to reinforce understanding.

Match Game

Race against time to match questions with their correct answers.

Study Guide

Read through all topics and answers as a comprehensive study reference.

Listen Mode

Listen to questions and answers read aloud — great for audio learners on the go.

Embed This Study Set

Add this interactive study set to your website or blog — all 6 formats included.

<div data-quixly-id="6441"></div>
<script src="https://www.quixlylearn.com/assets/embed/widget.js"></script>

Learn more about embedding →

About this Study Set

This study set covers Cryptography through 10 practice questions. A collection of factual questions regarding cryptographic algorithms, mathematical foundations, and security protocols. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 10 questions from the Cryptography Foundations study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 Which mathematical problem forms the basis of the security for the RSA algorithm?

A Discrete logarithm problem
B Integer factorization
C Elliptic curve inversion
D Subset sum problem

2 What is the primary function of a cryptographic hash function like SHA-256?

A To reversibly encrypt data
B To compress data without losing information
C To generate a fixed-size unique digital fingerprint
D To increase the entropy of a random number generator

3 In symmetric-key cryptography, what is the main requirement for secure communication?

A The public key must be known to everyone
B Both parties must share the same secret key
C The private key must be derived from the public key
D The algorithm must use a different key for every block

4 Which of the following is a symmetric block cipher standard approved by NIST in 2001?

A AES
B RSA
C DSA
D ECC

5 What property ensures that a digital signature proves the sender actually sent the message?

A Confidentiality
B Non-repudiation
C Data freshness
D Perfect forward secrecy

6 Diffie-Hellman is a protocol primarily designed for what purpose?

A Digital signatures
B Key exchange
C Message authentication
D Data compression

7 Which attack attempts to find two different inputs that produce the same hash output?

A Brute-force attack
B Birthday attack
C Man-in-the-middle attack
D Side-channel attack

8 What is the length of the initialization vector (IV) in standard AES-GCM operations?

A 64 bits
B 96 bits
C 128 bits
D 256 bits

9 Which elliptic curve is widely used in the EdDSA signature scheme?

A Curve25519
B secp256k1
C NIST P-256
D BrainpoolP512r1

10 What does the 'P' in PGP (Pretty Good Privacy) refer to regarding its cryptographic nature?

A Private key encryption
B Public key encryption
C Password-based encryption
D Protocol-based encryption

📱

Study on the go

Download Quixly and access all study formats on your phone — anywhere, anytime.