WorksheetsSubstitution Ciphers
Total questions: 5
Worksheet time: 3mins
What are the main types of substitution ciphers?
Vigenère cipher
Transposition cipher
Caesar cipher, monoalphabetic cipher
Playfair cipher
How do you decrypt a message that has been encoded with a substitution cipher?
Use a random key to shift all letters by three positions.
Reverse the order of the letters in the message.
Replace each letter in the encoded message with its corresponding original letter based on the identified substitution pattern.
Replace all vowels with the letter 'X' regardless of their position.
What are some real-world applications of substitution ciphers?
Cooking recipes
Social media marketing
Military communications, corporate data encryption, puzzles and games, educational tools.
Weather forecasting tools
What is a common method for creating a substitution cipher?
Using a random key to replace letters.
Shifting letters by a fixed number of positions.
Creating a keyword that determines the letter substitutions.
Reversing the alphabet to create a mirror cipher.
What role does the key play in a substitution cipher?
The key determines the method of encryption.
The key is used to decrypt the message.
The key defines the specific letter substitutions.
The key is irrelevant in substitution ciphers.
