https://github.com/timkurvers/jsbn

Modular package of Tom Wu's JavaScript implementation of arbitrary-precision integer arithmetic
https://github.com/timkurvers/jsbn

Last synced: 4 months ago
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Modular package of Tom Wu's JavaScript implementation of arbitrary-precision integer arithmetic

• Host: GitHub
• URL: https://github.com/timkurvers/jsbn
• Owner: timkurvers
• License: other
• Created: 2014-10-28T19:47:06.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2018-02-03T09:08:17.000Z (over 7 years ago)
• Last Synced: 2025-01-01T04:16:29.501Z (6 months ago)
• Language: JavaScript
• Homepage:
• Size: 56.6 KB
• Stars: 2
• Watchers: 2
• Forks: 1
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE.md

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README

        
# JSBN

[![Version 1.4.0](https://img.shields.io/badge/version-1.4.0-blue.svg?style=flat)](https://github.com/timkurvers/jsbn/tree/v1.4.0)

[![Build Status](https://img.shields.io/travis/timkurvers/jsbn.svg?style=flat)](https://travis-ci.org/timkurvers/jsbn)

[![Maintainability](https://img.shields.io/codeclimate/maintainability/timkurvers/jsbn.svg)](https://codeclimate.com/github/timkurvers/jsbn)

[![Test Coverage](https://img.shields.io/codeclimate/coverage/timkurvers/jsbn.svg)](https://codeclimate.com/github/timkurvers/jsbn)

[![Known Vulnerabilities](https://snyk.io/test/github/timkurvers/jsbn/badge.svg)](https://snyk.io/test/github/timkurvers/jsbn)

Modular package of [Tom Wu's JavaScript implementation of arbitrary-precision integer arithmetic](http://www-cs-students.stanford.edu/~tjw/jsbn/).

Licensed under the [**BSD** license](LICENSE.md).

## Features

* Modular

* Unit tested

* Node compatible

* Top-level module preventing global scope pollution in the browser

* JSHint compliance

## Installation

JSBN is available directly from GitHub:

```shell

npm install timkurvers/jsbn.git

```

## Usage & API

```javascript

const jsbn = require('jsbn');

```

### Base64

```javascript

jsbn.Base64.fromHex('4a53424e') // 'SlNCTg=='

jsbn.Base64.toHex('SlNCTg==') // '4a53424e'

jsbn.Base64.toByteArray('SlNCTg==') // [74, 83, 66, 78]

```

### Crypto

#### RC4

```javascript

const encrypter = new jsbn.Crypto.RC4();

const key = [1, 3, 3, 7];

encrypter.init(key);

const data = [1, 2, 3];

encrypter.encrypt(data);

```

#### SHA1

```javascript

jsbn.Crypto.SHA1.fromArray([97]) // [134, 247, 228, ..., 103, 184]

jsbn.Crypto.SHA1.fromString('a') // '86f7e437faa5a7fce15d1ddcb9eaeaea377667b8'

```

##### HMAC

```javascript

jsbn.Crypto.SHA1.HMAC.fromStrings('', '') // 'fbdb1d1b18aa6c08324b7d64b71fb76370690e1d'

jsbn.Crypto.SHA1.HMAC.fromArrays([], []) // [251, 219, 29, ..., 14, 29]

```

### Math

#### BigInteger

```javascript

const a = jsbn.Math.BigInteger.fromInt(25);

const b = new jsbn.Math.BigInteger('1002', 10);

a.add(b).intValue() // 1027

```