function GetSHA256OfUnicodeString(const S: String): String;
Gets the SHA-256 hash of the specified string, as a string.
var
SHA256: String;
begin
SHA256 := GetSHA256OfUnicodeString('Test');
// SHA256 = 'e6fa3ca87b1b641ab646d3b4933bba8d0970763f030b6578a60abdeae7366247'
end;