https://github.com/xsc/clj-kasumi

Implementation of KASUMI cipher in pure Clojure.
https://github.com/xsc/clj-kasumi

Last synced: 27 days ago
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Implementation of KASUMI cipher in pure Clojure.

• Host: GitHub
• URL: https://github.com/xsc/clj-kasumi
• Owner: xsc
• Created: 2012-12-14T23:43:39.000Z (almost 12 years ago)
• Default Branch: master
• Last Pushed: 2012-12-28T19:13:39.000Z (almost 12 years ago)
• Last Synced: 2024-04-13T20:15:38.831Z (7 months ago)
• Language: Clojure
• Size: 113 KB
• Stars: 0
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# clj-kasumi

This is an implementation of the [KASUMI](http://en.wikipedia.org/wiki/KASUMI) block cipher in pure Clojure. It - this implementation, that is - does neither perform well nor make any guarantees regarding security. 

__Do not use in production code, only for educational purposes!__

## Usage

Include in Leiningen:

```clojure

[clj-kasumi "0.1.0"]

```

KASUMI operates on 64-bit words which are represented as a a vector of two 32-bit integers. A single word can be encrypted/decrypted using `clj-kasumi.core/encode-word64` and `clj-kasumi.core/decode-word64` respectively:

```clojure

(ns test

  (:use [clj-kasumi.core :as kasumi]))

;; a key is an eight-element vector of 16-bit integers

(def K [ 0 1 2 3 4 5 6 7 ])

;; encode/decode word

(kasumi/encode-word64 K [30 32])                 ;; -> [3255589620 1286811847]

(kasumi/decode-word64 K [3255589620 1286811847]) ;; -> [30 32]

```

The functions `clj-kasumi.core/encode-string` and `clj-kasumi.core/decode-string` can be used to encrypt/decrypt complete strings. And finally, the function `clj-kasumi.core/string->key` creates an eight-element key vector from any given string by converting pairs of characters into 16-bit integers.

## Thanks

Thanks to Dominik Vinan for introducing me to the challenge of implementing this and supplying small and useful parts 

to begin with (even though he decided to do it in Haskell).

## License

Copyright © 2012 Yannick Scherer

Distributed under the Eclipse Public License, the same as Clojure.