xsalsa20

XSalsa20 implemented in Javascript and WebAssembly.

npm install xsalsa20

Usage

var crypto = require('crypto')
var xsalsa20 = require('xsalsa20')
var key = crypto.randomBytes(32)
var nonce = crypto.randomBytes(24)

var xor = xsalsa20(nonce, key)

console.log(xor.update(Buffer.from('hello')))
console.log(xor.update(Buffer.from('world')))

xor.finalize()

API

var xor = xsalsa20(nonce, key)

Create a new xor instance.

Nonce should be a 24 byte buffer/uint8array and key should be 32 bytes.

var output = xor.update(input, [output])

Update the xor instance with a new input buffer. Optionally you can pass in an output buffer.

xor.finalize()

Call this method last. Clears internal state.

Contributing

The bulk of this module is implemented in WebAssembly in the xsalsa20.wat file. To build the thin Javascript wrapper do:

npm run compile

License

MIT