Question

I’m writing my own component in Delphi XE2 but I primary use C++ Builder. That is why I need some help regarding Delphi DCrypt library.

My new component needs to have a method (function) that calculates sha256 hash value of a string. I know for DCrypt library and I use it for some time but this time I need to isolate SHA256 hash algorithm and add it in my new component.

DCrypt has stored SHA256 in DCPsha256.pas but since I’m not so skilled in Delphi I don’t know what to do. I don’t need to install TDCP_sha256, I just need to be able to calculate SHA256 inside my new component.

Ideas? Thanks.

Answer 1

Create the objects manually. Use the existing units and do not modify DCPCrypt.

How to create an object:

var
  x:TDCP_sha256;

begin
  x := TDCP_sha256.Create(nil);
  try 
     // do stuff, create hash, whatever.
  finally
    x.Free;
  end;
end;

You do not need to install any packages in order to provide access to the classes that you want to use, unless you wanted to drop them onto a form or data module. If you write code like the above code, you don’t need to modify anything.