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(Unicode C) ScMinidriver - Get Public Keys from Smart Card Key ContainerSee more ScMinidriver ExamplesDemonstrates how to query a key container on a smart card (or USB token) to get the public part of the private keys that are present. A key container can hold two separate private keys -- one in the "signature" position, and the other in the "key exchange" position.
#include <C_CkScMinidriverW.h> #include <C_CkPublicKeyW.h> void ChilkatSample(void) { HCkScMinidriverW scmd; const wchar_t *readerName; BOOL success; HCkPublicKeyW pubkey_sig; HCkPublicKeyW pubkey_kex; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // Chilkat recommends the following free tool for interactively examining the contents of your smart card // through the ScMinidriver interface: MGTEK Tool for Minidriver enabled Smart Cards // Let's first look at our smart card.. // Here's the view of our Gemalto (Thales) IDPrime MD T=0 smart card in the MGTEK tool: scmd = CkScMinidriverW_Create(); // First we need to acquire a context to the smart card in the reader where it is inserted. // Reader names (smart card readers or USB tokens) can be discovered // via List Readers or Find Smart Cards readerName = L"Alcor Micro USB Smart Card Reader 0"; success = CkScMinidriverW_AcquireContext(scmd,readerName); if (success == FALSE) { wprintf(L"%s\n",CkScMinidriverW_lastErrorText(scmd)); CkScMinidriverW_Dispose(scmd); return; } // If successful, the name of the currently inserted smart card is available: wprintf(L"Card name: %s\n",CkScMinidriverW_cardName(scmd)); // We likely shouldn't need to authenticate with the smart card (use a PIN) to simply get a public key, // so we can skip the PIN authenticatin step.. // Let's get the key(s) present in Container #7. // In our case (shown in the image above), there is a private key in the "key exchange" position, but no key in the "signature" position. pubkey_sig = CkPublicKeyW_Create(); pubkey_kex = CkPublicKeyW_Create(); success = CkScMinidriverW_GetContainerKeys(scmd,7,pubkey_sig,pubkey_kex); if (success == FALSE) { wprintf(L"%s\n",CkScMinidriverW_lastErrorText(scmd)); CkScMinidriverW_Dispose(scmd); CkPublicKeyW_Dispose(pubkey_sig); CkPublicKeyW_Dispose(pubkey_kex); return; } if (CkPublicKeyW_getEmpty(pubkey_sig) == TRUE) { wprintf(L"No signature key is present.\n"); } else { wprintf(L"Signature key:\n"); wprintf(L"%s\n",CkPublicKeyW_getPem(pubkey_sig,TRUE)); } if (CkPublicKeyW_getEmpty(pubkey_kex) == TRUE) { wprintf(L"No Key Exchange key is present.\n"); } else { wprintf(L"Key Exchange key:\n"); wprintf(L"%s\n",CkPublicKeyW_getPem(pubkey_kex,TRUE)); } CkScMinidriverW_DeleteContext(scmd); wprintf(L"Success.\n"); // Here's the output of the above sample code: // Card name: IDPrime MD T=0 // No signature key is present. // Key Exchange key: // -----BEGIN RSA PUBLIC KEY----- // MIIBCgKCAQEAsXeRhM55P13FbpNcXAMR3olbw2Wa6keZIHu5YTZYUBTlYWId+pNi // wUz3zFIEo+0IfYR0H27ybIycQO+1IIzJofUFNMAL3tZps2OKPlsjuCPls6kXpXhv // /gvhux8LrCtp4PcKWqJ6QVOZKChc7WAx40qFWzHi57ueqRTv3x0kESqGg/VjsqyT // Evb55psJO2RsfhLT7+YVh3hImRM3RDaJdkTkPuOxeFyT6N7VXD09329sLuS3QkUb // E9zEKDnz9X3d8dEQdJhSI9ba5fxl8R7fu8pB67ElfzFml96X1jLFtzy1pzOT5Fc4 // ROcaqlYckVzdBq9sxezm6MYmDBjNAcibRwIDAQAB // -----END RSA PUBLIC KEY----- CkScMinidriverW_Dispose(scmd); CkPublicKeyW_Dispose(pubkey_sig); CkPublicKeyW_Dispose(pubkey_kex); } |
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