Chilkat HOME .NET Core C# Android™ AutoIt C C# C++ Chilkat2-Python CkPython Classic ASP DataFlex Delphi ActiveX Delphi DLL Go Java Lianja Mono C# Node.js Objective-C PHP ActiveX PHP Extension Perl PowerBuilder PowerShell PureBasic Ruby SQL Server Swift 2 Swift 3,4,5... Tcl Unicode C Unicode C++ VB.NET VBScript Visual Basic 6.0 Visual FoxPro Xojo Plugin
(Unicode C) RSA Signature SHA256withRSA, iso-8859-1, base64See more RSA ExamplesRSA sign the iso-8859-1 byte representation of a string with SHA256withRSA, and return the signature in the base64 encoding.
#include <C_CkPrivateKeyW.h> #include <C_CkRsaW.h> void ChilkatSample(void) { HCkPrivateKeyW privKey; BOOL success; HCkRsaW rsa; const wchar_t *originalData; const wchar_t *sigBase64; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // This example will duplicate the following Java code: // // Signature sign = Signature.getInstance("SHA256withRSA"); // sign.initSign(privateKey); // sign.update(original.getBytes(Charset.forName("ISO-8859-1"))); // // ... // byte[] resultado = sign.sign(); // sello = encodeByteArrayToBase64(resultado); // // Load an RSA private key for signing. // You can load any format file. This example loads a .pem, but you can provide path to any type of file holding a private key. privKey = CkPrivateKeyW_Create(); success = CkPrivateKeyW_LoadAnyFormatFile(privKey,L"qa_data/pem/rsa_passwd.pem",L"passwd"); if (success != TRUE) { wprintf(L"%s\n",CkPrivateKeyW_lastErrorText(privKey)); CkPrivateKeyW_Dispose(privKey); return; } rsa = CkRsaW_Create(); CkRsaW_ImportPrivateKeyObj(rsa,privKey); originalData = L"This is the string to be hashed an RSA signed."; // Indicate that we want the iso-8859-1 byte representation of the string to be signed CkRsaW_putCharset(rsa,L"iso-8859-1"); // We want the RSA signature in base64 format CkRsaW_putEncodingMode(rsa,L"base64"); sigBase64 = CkRsaW_signStringENC(rsa,originalData,L"sha256"); wprintf(L"%s\n",sigBase64); CkPrivateKeyW_Dispose(privKey); CkRsaW_Dispose(rsa); } |
© 2000-2024 Chilkat Software, Inc. All Rights Reserved.