Delphi DLL

HMAC with SHA256

See more Encryption Examples

Demonstrates how to compute a HMAC SHA256 keyed-hash message authentication code. Delphi DLL

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Crypt2;

...

procedure TForm1.Button1Click(Sender: TObject);
var
crypt: HCkCrypt2;
mac: PWideChar;

begin
// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

crypt := CkCrypt2_Create();

// The output will be Hex, so set the EncodingMode:
CkCrypt2_putEncodingMode(crypt,'hex');

// Set the hash algorithm:
// Choices are: md5, sha-1, sha256, sha384, sha512, md2, haval
CkCrypt2_putHashAlgorithm(crypt,'sha256');
CkCrypt2_putMacAlgorithm(crypt,'hmac');

// Set the HMAC key:
CkCrypt2_SetMacKeyEncoded(crypt,'The_API_Secret','ascii');
mac := CkCrypt2__macStringENC(crypt,'The quick brown fox jumps over the lazy dog');
Memo1.Lines.Add(mac);

CkCrypt2_Dispose(crypt);

end;