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(C++) RSA Sign using Private Key of Certificate Type A3 (smart card / token)Demonstrates RSA signing data using the private key of a certificate type A3 (smart card, token). Note: This is a Windows-only example.
#include <CkCertStore.h> #include <CkCert.h> #include <CkRsa.h> #include <CkByteData.h> #include <CkFileAccess.h> void ChilkatSample(void) { // First get the A3 certificate that was installed on the Windows system. CkCertStore certStore; const char *thumbprint = "12c1dd8015f3f03f7b1fa619dc24e2493ca8b4b2"; // This is specific to Windows because it is opening the Windows Current-User certificate store. bool bReadOnly = true; bool success = certStore.OpenCurrentUserStore(bReadOnly); if (success != true) { std::cout << certStore.lastErrorText() << "\r\n"; return; } // Find the certificate with the desired thumbprint // (There are many ways to locate a certificate. This example chooses to find by thumbprint.) CkCert *cert = certStore.FindCertBySha1Thumbprint(thumbprint); if (certStore.get_LastMethodSuccess() != true) { std::cout << "Failed to find the certificate." << "\r\n"; return; } std::cout << "Found: " << cert->subjectCN() << "\r\n"; CkRsa rsa; // Provide the cert's private key bool bUsePrivateKey = true; success = rsa.SetX509Cert(*cert,bUsePrivateKey); delete cert; if (success != true) { std::cout << rsa.lastErrorText() << "\r\n"; return; } // Now we're ready to sign.. CkByteData dataToSign; CkByteData sigData; // Get bytes to be signed.. CkFileAccess fac; success = fac.ReadEntireFile("in.dat",dataToSign); success = rsa.SignBytes(dataToSign,"SHA-256",sigData); if (success != true) { std::cout << rsa.lastErrorText() << "\r\n"; return; } std::cout << "Signature created." << "\r\n"; } |
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