Beginner Cryptography Challenge

A quick set of questions that introduce core encryption ideas and simple code methods.

online safetycryptographydata protectioncodebreakingsecurity basicsciphersencryption
Difficulty:EASY

Quiz Details

Questions7
CategoryCryptography & Codes
DifficultyEASY
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Quiz Questions

Answer all questions below and test your knowledge.

  1. 1

    Which shift value turns the plaintext 'HELLO' into the ciphertext 'KHOOR' using a Caesar cipher?

    Question 1
  2. 2

    In cryptographic systems, the key that encrypts data and the key that decrypts data are the same in which type of encryption?

    Question 2
  3. 3

    What is the primary security weakness of the MD5 hashing algorithm?

    Question 3
  4. 4

    Which component of a public‑key pair is shared openly to allow others to encrypt messages to you?

    Question 4
  5. 5

    When a website URL begins with https, which protocol layer is primarily responsible for encrypting the connection?

    Question 5
  6. 6

    Which property makes a one‑time pad theoretically unbreakable?

    Question 6
  7. 7

    Base64 encoding is mainly used for which purpose in data transmission?

    Question 7

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