Encryption & Decryption using Caesar Cipher

How it works Iulius Caesar Cipher?

Caesar Cipher was invented by Gaius Iulius Caesar 2000 years ago.

Before becoming emperor of the Roman Empire, Iulius Caesar was a prolific military general. He succeeded to conquer Galia and seize the power of the Roman Republic after he won the war against Pompey. For this, Caesar needed an encryption method for his messages because there was a possibility that the messenger was killed. He came with a shift letter algorithm that implies changing the alphabet letters with a key digit. For example, if the key is five, the letter A becomes E (there are 5 letters from A to E).

This encryption method helped Caesar to conquer Galia and won the civil war. His generals knew how the algorithm worked and they understood the messages that Caesar sent to them.

Frequently asked questions

  1. Is Caesar shift can be considered secure?

    For Caesar this code worked very well, he only needed something easy to be understood by his officers, but also a little secure. Nowadays this algorithm is considered very easy to be broken.

  2. Is it free?

    Yes, it's 100% free to use.

  3. There is an API available?

    Yes, register for an API key and read the documentation.