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
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is a public key in the ElGamal encryption scheme?
💡 Hint: Think about who can use it and how.
Question 2
Easy
Briefly explain what ciphertext is.
💡 Hint: What happens to the original message?
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 does a public key allow anyone to do?
- Decrypt messages
- Encrypt messages
- Access private information
💡 Hint: Consider who can access the public key.
Question 2
True or False: The ElGamal scheme requires both sender and receiver to be online at the same time.
- True
- False
💡 Hint: Think about the flexibility that public keys provide.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
You are given a public key that we know is derived from a specific secret key. How might an attacker use this information to pose a threat, and what are the limits of their success?
💡 Hint: Consider the implications of knowing the public key versus the private key.
Question 2
Explain how ElGamal could be attacked if the discrete logarithm problem were solved efficiently. What would be the implications for secure communications?
💡 Hint: Think about the relationship between the strength of the problem and its impact on cryptographic processes.
Challenge and get performance evaluation