This JavaScript/Typescript library, codelockr, empowers you to explore and implement a wide range of classical ciphers directly within your web applications. It provides user-friendly functions for various encryption and decryption techniques, making it an ideal tool for:

• Educational purposes: Learn about classical ciphers and how they work.
• Cryptography enthusiasts: Experiment with different ciphers and their functionalities.
• Developers: Integrate basic encryption functionalities into your projects.

To install codelockr in your project, use either npm or yarn:

npm install codelockr

or

yarn add codelockr

codelockr offers a rich set of cipher implementations, each with its own encryption methods. Here's a table outlining the supported ciphers and how to use them:

Cipher	Description	Import Statement	Encryption Method
Caesar Cipher	Shifts plaintext letters by a specified number of positions.	`import { CaesarCipher } from 'codelockr';`	`CaesarCipher(plaintext, shift)`
Rail Fence Cipher	Encrypts by writing across a specified number of rows (rails) and reading down.	`import { RailFenceCipher } from 'codelockr';`	`RailFenceCipher(plaintext, rails)`
Substitution Cipher	Replaces plaintext letters with a custom mapping defined in a substitution key.	`import { SubstitutionCipher } from 'codelockr';`	`SubstitutionCipher(plaintext, substitutionKey)`
Atbash Cipher	Reverses the alphabet (A maps to Z, B maps to Y, etc.).	`import { AtbashCipher } from 'codelockr';`	`AtbashCipher(plaintext)`
Beaufort Cipher	Combines Caesar ciphers with a keyword for a more complex encryption.	`import { BeaufortCipher } from 'codelockr';`	`BeaufortCipher(plaintext, keyword)`
Autokey Cipher	Uses the plaintext itself as a keystream, where each letter's shift is based on the previous ciphertext letter.	`import { AutokeyCipher } from 'codelockr';`	`AutokeyCipher(plaintext, keyword)`
Columnar Transposition	Rearranges letters based on a permutation order defined in a key.	`import { ColumnarTranspositionCipher } from 'codelockr';`	`ColumnarTranspositionCipher(plaintext, columnarTranspositionKey)`
Vigenere Cipher	Uses a repeating keyword to shift letters by varying amounts.	`import { VigenereCipher } from 'codelockr';`	`VigenereCipher(plaintext, keyword)`
Playfair Cipher	Creates a bigram square based on a key and encrypts letter pairs.	`import { PlayfairCipher } from 'codelockr';`	`PlayfairCipher(plaintext, keyword)`
Polybius Square Cipher	Assigns numbers (1-25) to letters in a 5x5 grid for encryption/decryption.	`import { PolybiusSquareCipher } from 'codelockr';`	`PolybiusSquareCipher(plaintext)`