Veginere

What is a Veginere Cipher?

A veginere cipher is a plaintext cipher that allows a user to encrypt a message by using a key. A key can be a word or a random conbination of letters with no limit, that will convert those letters into numbers. It then takes those numbers and adds it to the message you would like to encrypt. It then divides that by subtracts that by 26 to get the new letter. This contains until the end of the key. If the key is shorter than the message itself, the key will loop until the word or message is complete.

Advantages of a Veginere Cipher

Stronger than a Caeser Cipher: Unlike the Caesar cipher, which shifts all letters by the same number, the Vigenère cipher uses a keyword to change the shift for each letter. This makes patterns harder to detect and breaks basic frequency analysis. Short and Concise: A short key can encrypt a long message securely because the key is repeated, making the encryption more complex without needing a long password. Variety: Unlike the Caeser and AtBash cipher, you can choose any letter and how many letters you would like. The Caeser uses one number as a shift key, and the AtBash just flips the alphabet. Making them easy to crack.

If you wish to see what you have encrpyted, and what key you used for this session. Click F12 and navigate to SessionStorage.