cryptii

A web app for modular conversion, encoding, and encryption, all performed directly in your browser with no server interaction — cryptii.com

Getting started

• Use the live version
• Download the latest stable release or other releases
• Clone the repository: git clone git@github.com:cryptii/cryptii.git
• Build project locally:
  • Ensure you have Node.js of version specified in .nvmrc installed.
  • Install dependencies: npm install
  • Run build tasks: npm run build
  • Run build tasks on file change: npm run dev
• Contribute to the project or report an issue

Concept

This framework and web app are designed to support a wide range of ciphers, formats, algorithms, and methods, referred to as ‘Bricks,’ while keeping them easily combinable. There are two main types of Bricks: Encoders and Viewers. Encoders process content by encoding or decoding it using specific methods and settings, while Viewers allow users to view, edit, and interact with content fed into or generated by Encoders in various formats.

Bricks can be arranged sequentially within a Pipe. When content is modified in a Viewer or Brick settings are adjusted, the changes propagate through the Pipe’s Bricks in sequence, in both directions.

Chain objects serve as containers for UTF-8 text or binary content exchanged between Bricks. They automatically handle the conversion between text-based and binary-based formats, enabling seamless integration when transitioning between different content types.

Brick library

Name	Category	Description
a1z26	Ciphers	Number to letter encoder (A1Z26)
adfgx-cipher	Polybius square	ADFGX cipher
affine-cipher	Ciphers	Affine Cipher
alphabetical-substitution	Ciphers	Alphabetical substitution
ascii85	Encoding	Ascii85 / Base85 incl. variant Z85
bacon-cipher	Ciphers	Bacon's cipher
base32	Encoding	Base32 incl. variants base32hex, z-base-32, …
base64	Encoding	Base64 incl. variants base64url, …
baudot-code	Encoding	Baudot code
bifid-cipher	Polybius square	Bifid cipher
bitwise-operation	Transform	Bitwise operations (NOT, AND, OR, …)
block-cipher	Modern cryptography	Block ciphers incl. AES
bootstring	Encoding	Bootstring
bytes	View	Viewing and editing bytes
caesar-cipher	Ciphers	Caesar cipher
case-transform	Transform	Transforms to upper case, lower case, …
enigma	Ciphers	Enigma machine incl. 13 models
hash	Modern cryptography	Creating a message digest
hmac	Modern cryptography	Creating a Hash-based message authentication code
integer	Encoding	Translates between bytes and integers
morse-code	Alphabets	Morse code (English)
nihilist-cipher	Polybius square	Nihilist cipher
numeral-system	Transform	Translates numerals between systems
punched-tape	View	Punched tape
polybius-square	Polybius square	Polybius square
punycode	Encoding	Punycode
rail-fence-cipher	Ciphers	Rail fence cipher
rc4	Modern cryptography	RC4 incl. RC4-drop
replace	Transform	Finds and replaces a given text
reverse	Transform	Reverses the order of bytes, characters or lines
rot13	Ciphers	ROT13 incl. variants ROT5, ROT18 & ROT47
spelling-alphabet	Alphabets	Several spelling alphabets
tap-code	Polybius square	Tap code
text	View	Viewing and editing in plain text
trifid-cipher	Polybius square	Trifid cipher
unicode-code-points	Encoding	Encoding to Unicode code points in given format
url-encoding	Encoding	URL encoding / Percent-encoding
vigenere-cipher	Ciphers	Vigenère cipher incl. Beaufort cipher variants

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A project by Wierk and contributors. Released under the MIT license.