https://github.com/z-hao-wang/react-native-rsa

React native rsa crypto
https://github.com/z-hao-wang/react-native-rsa

Last synced: 6 days ago
JSON representation

React native rsa crypto

• Host: GitHub
• URL: https://github.com/z-hao-wang/react-native-rsa
• Owner: z-hao-wang
• License: mit
• Created: 2016-03-18T04:46:50.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2017-05-19T17:43:31.000Z (over 7 years ago)
• Last Synced: 2024-12-02T03:46:47.804Z (11 days ago)
• Language: JavaScript
• Size: 24.4 KB
• Stars: 68
• Watchers: 3
• Forks: 19
• Open Issues: 6
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# react-native-rsa

React native rsa crypto lib

## The use case

Initially this was created for encrypted messaging

Client would generate RSA key pairs and store private key locally and share the public key.

## How to use

```

npm install react-native-rsa

```

Generate RSA keys

```

var RSAKey = require('react-native-rsa');

const bits = 1024;

const exponent = '10001'; // must be a string. This is hex string. decimal = 65537

var rsa = new RSAKey();

rsa.generate(bits, exponent);

var publicKey = rsa.getPublicString(); // return json encoded string

var privateKey = rsa.getPrivateString(); // return json encoded string

```

Encrypt

```

var rsa = new RSAKey();

rsa.setPublicString(publicKey);

var originText = 'sample String Value';

var encrypted = rsa.encrypt(originText);

```

Decrypt

```

rsa.setPrivateString(privateKey);

var decrypted = rsa.decrypt(encrypted); // decrypted == originText

```

Tested works with ursa in nodejs (with ursa padding set to PKCS1).

## Credits

This lib uses Tom Wu's jsbn http://www-cs-students.stanford.edu/~tjw/jsbn/

## TODO: Still missing export to PEM format

## Known issues:

* Node js may complain about 'window' is not defined. I just commented out the 'window' related codes in rng.js and it worked. (It look like just adding some extra randomness. Should still work without that part). I don't recommend using this lib in nodejs. I use ursa or node-rsa lib for nodejs.