Ciphers & Codes

Ciphers & Codes

Status
Completed
Short Description

A tool to encode and decode text in various ciphers.

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Last Updated
September 14, 2019
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Ciphers & Codes

A tool to learn about various ciphers, and encode and decode text.

Supported Ciphers

Affine

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A monoalphabetic substitution cipher. Each letter in the alphabet is mapped to a number, then encrypted/decrypted using a math formula, and finally converted back to a letter.

Atbash

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A simple substitution cipher originally created for the Hebrew alphabet. When used with the English alphabet, this cipher reverses the alphabet.

Caesar

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A popular substitution cipher, where the alphabet is shifted up or down a specified number of positions.

Keyed Substitution

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A monoalphabetic substitution cipher, where a keyword placed into beginning of the alphabet, and any duplicated letters are removed.

Masonic

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A geometric simple substitution cipher which exchanges letters for symbols which are fragments of a grid

Playfair

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Encrypts pairs of letters, using a 5x5 grid.

Polybius Square

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A cipher where each alphanumeric (a-z, 0-9) character is represented by it’s coordinates in a grid.

Vigenère

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A simple polyalphabetic substitution cipher which uses a tableau composed of each of the 26 options of the Caesar Cipher.

🎨 Design

Catalog of various redesigns over time as I got the itch to work on this again.

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