![]() |
Chilkat HOME Android™ AutoIt C C# C++ Chilkat2-Python CkPython Classic ASP DataFlex Delphi DLL Go Java Node.js Objective-C PHP Extension Perl PowerBuilder PowerShell PureBasic Ruby SQL Server Swift Tcl Unicode C Unicode C++ VB.NET VBScript Visual Basic 6.0 Visual FoxPro Xojo Plugin
(Delphi DLL) RSA Encrypt and OpenSSL DecryptDemonstrates how to use Chilkat to RSA encrypt, and then use OpenSSL to decrypt. 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, BinData, PrivateKey, Rsa, PublicKey; ... procedure TForm1.Button1Click(Sender: TObject); var success: Boolean; rsa: HCkRsa; privKey: HCkPrivateKey; pubKey: HCkPublicKey; plainText: PWideChar; bUsePrivateKey: Boolean; encryptedStr: PWideChar; bd: HCkBinData; begin success := False; // This requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. rsa := CkRsa_Create(); privKey := CkPrivateKey_Create(); success := CkRsa_GenKey(rsa,2048,privKey); success := CkPrivateKey_SavePkcs8PemFile(privKey,'qa_output/privKey.pem'); pubKey := CkPublicKey_Create(); CkPrivateKey_ToPublicKey(privKey,pubKey); CkRsa_putEncodingMode(rsa,'base64'); plainText := 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz01234567890'; bUsePrivateKey := False; CkRsa_UsePublicKey(rsa,pubKey); encryptedStr := CkRsa__encryptStringENC(rsa,plainText,bUsePrivateKey); bd := CkBinData_Create(); CkBinData_AppendEncoded(bd,encryptedStr,'base64'); success := CkBinData_WriteFile(bd,'qa_output/enc.dat'); // The OpenSSL command to decrypt is: // openssl pkeyutl -in enc.dat -inkey privKey.pem -keyform PEM -pkeyopt rsa_padding_mode:pkcs1 -decrypt Memo1.Lines.Add('OK'); CkRsa_Dispose(rsa); CkPrivateKey_Dispose(privKey); CkPublicKey_Dispose(pubKey); CkBinData_Dispose(bd); end; |
© 2000-2025 Chilkat Software, Inc. All Rights Reserved.