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(C) ScMinidriver - Load Certificate from Smart Card or USB Token by IndexSee more ScMinidriver ExamplesDemonstrates how to load a certificate located on a smart card or USB token by key container index.
#include <C_CkScMinidriver.h> #include <C_CkCert.h> void ChilkatSample(void) { HCkScMinidriver scmd; const char *readerName; BOOL success; int retval; HCkCert cert; int keyContainerIndex; const char *keySpec; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. scmd = CkScMinidriver_Create(); // Reader names (smart card readers or USB tokens) can be discovered // via List Readers or Find Smart Cards readerName = "SCM Microsystems Inc. SCR33x USB Smart Card Reader 0"; success = CkScMinidriver_AcquireContext(scmd,readerName); if (success == FALSE) { printf("%s\n",CkScMinidriver_lastErrorText(scmd)); CkScMinidriver_Dispose(scmd); return; } // If successful, the name of the currently inserted smart card is available: printf("Card name: %s\n",CkScMinidriver_cardName(scmd)); // If desired, perform regular PIN authentication with the smartcard. // For more details about smart card PIN authentication, see the Smart Card PIN Authentication Example retval = CkScMinidriver_PinAuthenticate(scmd,"user","000000"); if (retval != 0) { printf("PIN Authentication failed.\n"); } cert = CkCert_Create(); // We can pass a specific key container index, or -1 to locate the 1st non-empty container containing a certificate and private key. keyContainerIndex = -1; // keySpec can be "kex" or "sig" to indicate the key-exchange or signature position within the container. // keySpec can also be "any" to accept either position, with preference given to the "sig" position if both are occupied. keySpec = "any"; success = CkScMinidriver_GetCert(scmd,keyContainerIndex,keySpec,cert); if (success == FALSE) { printf("Failed to load the certificate.\n"); } else { printf("Successfully loaded the cert object from the smart card / USB token.\n"); // Note: When successful, the cert object is internally linked to the ScMinidriver object's authenticated session. // The cert object can now be used to sign or do other cryptographic operations that occur on the smart card / USB token. // If your application calls PinDeauthenticate or DeleteContext, the cert will no longer be able to sign on the smart card // because the smart card ScMinidriver session will no longer be authenticated or deleted. } // ... // ... // ... // When finished with operations that required authentication, you may if you wish, deauthenticate the session. success = CkScMinidriver_PinDeauthenticate(scmd,"user"); if (success == FALSE) { printf("%s\n",CkScMinidriver_lastErrorText(scmd)); } // Delete the context when finished with the card. success = CkScMinidriver_DeleteContext(scmd); if (success == FALSE) { printf("%s\n",CkScMinidriver_lastErrorText(scmd)); } CkScMinidriver_Dispose(scmd); CkCert_Dispose(cert); } |
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