132 lines
6.0 KiB
Markdown
132 lines
6.0 KiB
Markdown
[](https://travis-ci.org/openpgpjs/openpgpjs) [](https://coveralls.io/r/openpgpjs/openpgpjs)
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[](https://saucelabs.com/u/openpgpjs)
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OpenPGP.js
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==========
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[OpenPGP.js](http://openpgpjs.org/) is a Javascript implementation of the OpenPGP protocol. This is defined in [RFC 4880](http://tools.ietf.org/html/rfc4880).
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### Node support
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For server side use, install via npm:
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npm install --save openpgp
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### Browser support
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For use in browser, install via bower:
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bower install --save openpgp
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Or Fetch a minified build under [dist](https://github.com/openpgpjs/openpgpjs/tree/master/dist).
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The library can be loaded as a CommonJS module, an AMD module or accessed globally via `window.openpgp`.
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### Dependencies
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OpenPGP.js only supports browsers that implement `window.crypto.getRandomValues`. Also, if the browsers support [native WebCrypto](http://www.w3.org/TR/WebCryptoAPI/) via the `window.crypto.subtle` api, this will be used. Though this can be deactivated by setting `config.useWebCrypto = false`. In this case the library will fall back to Web Worker operations if the `initWorker(workerPath)` is set.
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OpenPGP.js uses ES6 promises which are available in [most modern browsers](http://caniuse.com/#feat=promises). If you need to support browsers that do not support Promises, fear not! There is a [polyfill](https://github.com/jakearchibald/es6-promise), which is included in the build step. So no action required on the developer's part for promises!
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### Examples
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#### Generate new keypair
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```js
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var openpgp = require('openpgp');
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var options = {
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numBits: 2048,
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userId: 'Jon Smith <jon.smith@example.org>',
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passphrase: 'super long and hard to guess secret'
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};
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openpgp.generateKeyPair(options).then(function(keypair) {
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// success
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var privkey = keypair.privateKeyArmored;
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var pubkey = keypair.publicKeyArmored;
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}).catch(function(error) {
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// failure
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});
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```
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#### Encryption
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```js
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var openpgp = require('openpgp');
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var key = '-----BEGIN PGP PUBLIC KEY BLOCK ... END PGP PUBLIC KEY BLOCK-----';
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var publicKey = openpgp.key.readArmored(key);
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openpgp.encryptMessage(publicKey.keys, 'Hello, World!').then(function(pgpMessage) {
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// success
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}).catch(function(error) {
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// failure
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});
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```
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#### Decryption
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```js
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var openpgp = require('openpgp');
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var key = '-----BEGIN PGP PRIVATE KEY BLOCK ... END PGP PRIVATE KEY BLOCK-----';
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var privateKey = openpgp.key.readArmored(key).keys[0];
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privateKey.decrypt('passphrase');
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var pgpMessage = '-----BEGIN PGP MESSAGE ... END PGP MESSAGE-----';
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pgpMessage = openpgp.message.readArmored(pgpMessage);
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openpgp.decryptMessage(privateKey, pgpMessage).then(function(plaintext) {
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// success
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}).catch(function(error) {
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// failure
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});
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```
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### Documentation
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A jsdoc build of our code comments is available at [doc/index.html](http://openpgpjs.org/openpgpjs/doc/index.html). Public calls should generally be made through the OpenPGP object [doc/openpgp.html](http://openpgpjs.org/openpgpjs/doc/module-openpgp.html).
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### Security Audit
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To date the OpenPGP.js code base has undergone two complete security audits from [Cure53](https://cure53.de). The first audit's report has been published [here](https://github.com/openpgpjs/openpgpjs/wiki/Cure53-security-audit).
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### Security recommendations
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It should be noted that js crypto apps deployed via regular web hosting (a.k.a. [**host-based security**](https://www.schneier.com/blog/archives/2012/08/cryptocat.html)) provide users with less security than installable apps with auditable static versions. Installable apps can be deployed as a [Firefox](https://developer.mozilla.org/en-US/Marketplace/Publishing/Packaged_apps) or [Chrome](http://developer.chrome.com/apps/about_apps.html) packaged app. These apps are basically signed zip files and their runtimes typically enforce a strict [Content Security Policy (CSP)](http://www.html5rocks.com/en/tutorials/security/content-security-policy/) to protect users against [XSS](http://en.wikipedia.org/wiki/Cross-site_scripting). This [blogpost](http://tonyarcieri.com/whats-wrong-with-webcrypto) explains the trust model of the web quite well.
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It is also recommended to set a strong passphrase that protects the user's private key on disk.
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### Development
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To create your own build of the library, just run the following command after cloning the git repo. This will download all dependencies, run the tests and create a minifed bundle under `dist/openpgp.min.js` to use in your project:
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npm install && npm test
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### Mailing List
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You can [sign up](http://list.openpgpjs.org/) for our mailing list and ask for help there. We've recently worked on getting our [archive up and running](http://www.mail-archive.com/list@openpgpjs.org/).
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### How do I get involved?
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You want to help, great! Go ahead and fork our repo, make your changes and send us a pull request.
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### License
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GNU Lesser General Public License (3.0 or any later version). Please take a look at the [LICENSE](LICENSE) file for more information.
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### Resources
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Below is a collection of resources, many of these were projects that were in someway a precursor to the current OpenPGP.js project. If you'd like to add your link here, please do so in a pull request or email to the list.
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* [http://www.hanewin.net/encrypt/](http://www.hanewin.net/encrypt/)
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* [https://github.com/seancolyer/gmail-crypt](https://github.com/seancolyer/gmail-crypt)
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* [https://github.com/mete0r/openpgp-js](https://github.com/mete0r/openpgp-js)
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* [http://fitblip.github.com/JSPGP-Stuffs/](http://fitblip.github.com/JSPGP-Stuffs/)
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* [http://qooxdoo.org/contrib/project/crypto](http://qooxdoo.org/contrib/project/crypto)
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* [https://github.com/GPGTools/Mobile/wiki/Introduction](https://github.com/GPGTools/Mobile/wiki/Introduction)
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* [http://gpg4browsers.recurity.com/](http://gpg4browsers.recurity.com/)
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* [https://github.com/gmontalvoriv/mailock](https://github.com/gmontalvoriv/mailock)
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