What is a substitution cipher?
Q: What is a substitution cipher?
A: A substitution cipher is a type of cryptography where a rule is used to replace each letter of a message with another letter from the alphabet.
Q: How does a substitution cipher work?
A: In a substitution cipher, a rule is used to replace each letter of the message with another letter from the alphabet, one at a time.
Q: What is an example of a table used in a substitution cipher?
A: The table in the text gives a rule for a substitution cipher that can be used to replace each letter with another letter from the alphabet.
Q: What is the Caesar cipher?
A: The Caesar cipher is an example of a substitution cipher.
Q: Are substitution ciphers safe enough for important messages?
A: No, substitution ciphers are not safe enough to use for important messages.
Q: How can substitution ciphers be broken?
A: Substitution ciphers can be broken using frequency analysis, which looks for common letters in the changed message that are likely to be the most common letters in English.
Q: What is a common puzzle that involves breaking cryptograms?
A: Breaking cryptograms, which are messages hidden with a substitution cipher, is a common puzzle often found in newspapers.
