Practice Rsa Public Key Cryptosystem (16.5) - Lecture - 64 - Discrete Mathematics

Practise this section

8 questions

Flashcard drill
2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What is the purpose of the public key in RSA?
Show hintHide hint
Think about how messages are sent securely.
Question 2.
Can anyone see the private key?
Show hintHide hint
Who has access to decrypt the messages?
3Question 3.
What is required for the public key in RSA?
- Primes only
- A modulus and an exponent
- Just a prime number
Show hintHide hint
Think about what is involved in the encryption process.
4Question 4.
True or False: The private key can be shared with anyone who wants to send you a message.
- True
- False
Show hintHide hint
Consider who should access the decryption capabilities.
Question 5.
Given small primes p = 37 and q = 47, compute the values for N, φ(N), and suggest values for e and d.
Show hintHide hint
Confirm that e is less than φ(N) and coprime.
Question 6.
For N = 3233, compute the decryption of c = 2790 assuming d is known.
Show hintHide hint
Follow the decryption formula correctly.

4 more questions in this section. Enroll free to practise them all.