sha256Hash 
Requires a Node.js runtime ('qsu/node')Converts String data to sha256 hash value and returns it.
Parameters
str::stringencoding?::'hex'(Default)|'base64'|'base64url'|'binary'
Named
Returns
string
Examples
javascript
sha256Hash('test'); // Returns '9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08'dart
sha256Hash('test'); // Returns '9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08'