Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the primary purpose of a message digest?
💡 Hint: Think about checking if data has been altered.
Question 2
Easy
Name one common algorithm used for generating digital signatures.
💡 Hint: Consider key types.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the main function of message digests in Java?
- Encrypt data
- Verify data integrity
- Generate keys
💡 Hint: Think of a scenario where data change must be detected.
Question 2
Digital signatures use which key for signing?
- Public key
- Private key
- Random key
💡 Hint: Recall how dual-key systems work.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Design a secure system using JCA principles where user registration includes hashing passwords, signing documents digitally, and managing keys effectively.
💡 Hint: Think about the steps in securing user data.
Question 2
Explain a potential risk in not managing secure random numbers in a cryptographic system.
💡 Hint: Consider how predictable values can affect security.
Challenge and get performance evaluation