Adding cryptojs code to servicenow

[ShAn21]

HI Team,

Found an article in github for a script include code for CryptoJS. But someow does not work as expected. Has someone made it work? If yes please let me know

https://gist.github.com/igable/4bdcd90f78a8b2b07581

I am unable to call this hmac function in script include. It says ': Cannot read property "init" from undefined'.

return new scope.Crypto().CryptoJS.HmacSHA256(message, new scope.Crypto().CryptoJS.enc.Hex.parse(key_hex)).toString(new scope.Crypto().CryptoJS.enc.Hex);

Thanks