Practice Symmetric Encryption (14.5.1) - Security in Java (Cryptography & Access Control)

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9 questions

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Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is symmetric encryption?
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Think about the type of key used.
Question 2.
Name one algorithm used in symmetric encryption.
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Think about modern encryption standards.
3Question 3.
What is the main purpose of symmetric encryption?
- To use multiple keys
- To encrypt and decrypt using a single key
- To hash data
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Remember the definition of symmetric.
4Question 4.
True or False: AES is considered less secure than DES.
- True
- False
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Think about which is modern.
Question 5.
Create a Java program that encrypts a user's input using AES and then decrypts it back using the same secret key. Explain any challenges you faced during the implementation.
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Consider exceptions that may arise.
Question 6.
Discuss how you would secure the key in a real-world application and why it is crucial.
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Think of how breaches could occur!

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