Delphi ActiveX

Hash File: SHA-1, HAVAL, MD2, MD5, SHA-256, SHA-384, SHA-512

See more Encryption Examples

Computing the hash for a file of any size. Delphi ActiveX

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

...

procedure TForm1.Button1Click(Sender: TObject);
var
crypt: TChilkatCrypt2;
filename: WideString;
hash: WideString;

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

crypt := TChilkatCrypt2.Create(Self);

// Any type of file may be hashed.
// There is  no size limitation because the file is consumed
// in streaming mode internally.

filename := 'something.zip';

crypt.HashAlgorithm := 'sha1';
crypt.EncodingMode := 'hex';

// Other possible EncodingMode settings are: 
// "quoted-printable", "base64", "base32", and "url"

hash := crypt.HashFileENC(filename);
Memo1.Lines.Add('SHA1:');
Memo1.Lines.Add(hash);

// Hash using MD2
crypt.HashAlgorithm := 'md2';
hash := crypt.HashFileENC(filename);
Memo1.Lines.Add('MD2:');
Memo1.Lines.Add(hash);

// Hash using MD5
crypt.HashAlgorithm := 'md5';
hash := crypt.HashFileENC(filename);
Memo1.Lines.Add('MD5:');
Memo1.Lines.Add(hash);

// Hash using SHA-256
crypt.HashAlgorithm := 'sha256';
hash := crypt.HashFileENC(filename);
Memo1.Lines.Add('SHA256:');
Memo1.Lines.Add(hash);

// Hash using SHA-384
crypt.HashAlgorithm := 'sha384';
hash := crypt.HashFileENC(filename);
Memo1.Lines.Add('SHA384:');
Memo1.Lines.Add(hash);

// Hash using SHA-512
crypt.HashAlgorithm := 'sha512';
hash := crypt.HashFileENC(filename);
Memo1.Lines.Add('SHA512:');
Memo1.Lines.Add(hash);

// Hash using HAVAL
// There are two additional properties relevant to HAVAL:
// HavalRounds, and KeyLength.
// HavalRounds can have values of 3, 4, or 5.
// KeyLength can have values of 128, 160, 192, 224, or 256
crypt.HashAlgorithm := 'haval';
crypt.HavalRounds := 5;
crypt.KeyLength := 256;
hash := crypt.HashFileENC(filename);
Memo1.Lines.Add('Haval:');
Memo1.Lines.Add(hash);
end;