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(Delphi DLL) 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, PrivateKey, Cert, Pem, Crypt2; ... procedure TForm1.Button1Click(Sender: TObject); var success: Boolean; crypt: HCkCrypt2; pem: HCkPem; privkey: HCkPrivateKey; cert: HCkCert; begin success := False; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. crypt := CkCrypt2_Create(); CkCrypt2_putCryptAlgorithm(crypt,'pki'); pem := CkPem_Create(); success := CkPem_LoadPemFile(pem,'qa_data/pem/myPem.pem','password'); if (success = False) then begin Memo1.Lines.Add(CkPem__lastErrorText(pem)); Exit; end; privkey := CkPrivateKey_Create(); success := CkPem_PrivateKeyAt(pem,0,privkey); if (success = False) then begin Memo1.Lines.Add(CkPem__lastErrorText(pem)); Exit; end; cert := CkCert_Create(); success := CkPem_CertAt(pem,0,cert); if (success = False) then begin Memo1.Lines.Add(CkPem__lastErrorText(pem)); Exit; end; success := CkCrypt2_SetDecryptCert2(crypt,cert,privkey); if (success = False) then begin Memo1.Lines.Add(CkCrypt2__lastErrorText(crypt)); Exit; end; success := CkCrypt2_CkDecryptFile(crypt,'qa_data/infile.enc','qa_output/outfile.dat'); if (success = False) then begin Memo1.Lines.Add(CkCrypt2__lastErrorText(crypt)); Exit; end; Memo1.Lines.Add('Success.'); CkCrypt2_Dispose(crypt); CkPem_Dispose(pem); CkPrivateKey_Dispose(privkey); CkCert_Dispose(cert); end; |
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