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(Delphi ActiveX) Duplicate OpensSSL Command that Decrypts Binary DERThis example duplicates the following: openssl smime -decrypt -in INPUT_FILE -inform der -binary -out OUTPUT_FILE -recip PEM_CERT_AND_KEY -passin pass:PRIVKEY_PASSWORD Note: Although "smime" is the OpenSSL command, we're not really dealing with S/MIME. The arguments "-inform der -binary" indicate that the input is simply the binary DER (i.e. the PKCS7 binary encrypted object). The output can be any type of file (whatever was encrypted). Note: This example requires Chilkat v11.0.0 or greater.
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 success: Integer; crypt: TChilkatCrypt2; pem: TChilkatPem; privkey: TPrivateKey; cert: TChilkatCert; begin success := 0; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. crypt := TChilkatCrypt2.Create(Self); crypt.CryptAlgorithm := 'pki'; pem := TChilkatPem.Create(Self); success := pem.LoadPemFile('qa_data/pem/myPem.pem','password'); if (success = 0) then begin Memo1.Lines.Add(pem.LastErrorText); Exit; end; privkey := TPrivateKey.Create(Self); success := pem.PrivateKeyAt(0,privkey.ControlInterface); if (success = 0) then begin Memo1.Lines.Add(pem.LastErrorText); Exit; end; cert := TChilkatCert.Create(Self); success := pem.CertAt(0,cert.ControlInterface); if (success = 0) then begin Memo1.Lines.Add(pem.LastErrorText); Exit; end; success := crypt.SetDecryptCert2(cert.ControlInterface,privkey.ControlInterface); if (success = 0) then begin Memo1.Lines.Add(crypt.LastErrorText); Exit; end; success := crypt.CkDecryptFile('qa_data/infile.enc','qa_output/outfile.dat'); if (success = 0) then begin Memo1.Lines.Add(crypt.LastErrorText); Exit; end; Memo1.Lines.Add('Success.'); end; |
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