How to decode Caesar cipher?
Understand the Problem
The question is asking for a method or steps to decode a Caesar cipher, which is a simple encryption technique where each letter in the plaintext is shifted a certain number of places down or up the alphabet. To decode it, one typically needs to know the shift value to reverse the process.
Answer
Take 26 minus the shift value and apply that to shift the message back.
To decrypt a message encoded with a Caesar cipher, take the value of 26 minus the shift value and apply that new value to shift the encoded message back to its original form.
Answer for screen readers
To decrypt a message encoded with a Caesar cipher, take the value of 26 minus the shift value and apply that new value to shift the encoded message back to its original form.
More Information
The Caesar cipher is one of the simplest and most widely known encryption techniques where each letter in the plaintext is shifted a certain number of places down the alphabet.
Tips
Common mistakes include applying the same shift value used for encryption instead of the decryption shift or mixing up the direction of the shift.
Sources
- Brilliant - Caesar Cipher - brilliant.org
- GeeksforGeeks - Caesar Cipher in Cryptography - geeksforgeeks.org
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