increment-buffer

increment a buffer (with carry)

Example

Useful for managing nonces when using libsodium In particular, see Notes section regarding reusing keys (scroll to bottom)

> var inc = require('increment-buffer')
> inc(new Buffer([0, 0, 0, 0]))
<Buffer 00 00 00 01>

> //with carry...
> inc(new Buffer([0, 0, 0, 255]))
<Buffer 00 00 01 00>

> //wrap around
> inc(new Buffer([255, 255, 255, 255]))
<Buffer 00 00 00 00>

License

MIT