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(Lianja) ScMinidriver - Find and Load Certificate from Smart Card or USB Token

See more ScMinidriver Examples

Demonstrates how to find and load a specific certificate located on a smart card or USB token.

Note: This functionality was introduced in Chilkat v9.5.0.87.

Note: The ScMinidriver functionality is for Windows-only because ScMinidriver DLLs only exist on Windows. In the next version, Chilkat will be releasing a Pkcs11 class to support Linux, MacOSX, and possibly other operating systems.

Chilkat Lianja Extension Download

Chilkat Lianja Extension

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

loScmd = createobject("CkScMinidriver")

// Reader names (smart card readers or USB tokens) can be discovered
// via List Readers or Find Smart Cards
lcReaderName = "SCM Microsystems Inc. SCR33x USB Smart Card Reader 0"
llSuccess = loScmd.AcquireContext(lcReaderName)
if (llSuccess = .F.) then
    ? loScmd.LastErrorText
    release loScmd
    return
endif

// If successful, the name of the currently inserted smart card is available:
? "Card name: " + loScmd.CardName

// If desired, perform regular PIN authentication with the smartcard.
// For more details about smart card PIN authentication, see the Smart Card PIN Authentication Example
lnRetval = loScmd.PinAuthenticate("user","000000")
if (lnRetval <> 0) then
    ? "PIN Authentication failed."
endif

// You can find a cerficate using any of the following certificate parts:
// "subjectDN" -- The full distinguished name of the cert.
// "subjectDN_withTags" -- Same as above, but in a format that includes the subject part tags, such as the "CN=" in "CN=something"
// "subjectCN" -- The common name part (CN) of the certificate's subject.
// "serial" -- The certificate serial number.
// "serial:issuerCN" -- The certificate serial number + the issuer's common name, delimited with a colon char.
// These are the same certificate parts that can be retrieved by listing certificates on the smart card (or USB token).
// See List Certificates on Smart Card Example
lcCertPart = "subjectCN"
lcPartValue = "PIVKey E42D60A759D39147A26E0AF2FB1183C5"

// If the certificate is found, it is loaded into the cert object.
loCert = createobject("CkCert")
llSuccess = loScmd.FindCert(lcCertPart,lcPartValue,loCert)
if (llSuccess = .F.) then
    ? "Failed to find the certificate."
else
    ? "Successfully loaded the cert object from the smart card / USB token."

    // 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.
endif

// ...
// ...
// ...

// When finished with operations that required authentication, you may if you wish, deauthenticate the session.
llSuccess = loScmd.PinDeauthenticate("user")
if (llSuccess = .F.) then
    ? loScmd.LastErrorText
endif

// Delete the context when finished with the card.
llSuccess = loScmd.DeleteContext()
if (llSuccess = .F.) then
    ? loScmd.LastErrorText
endif



release loScmd
release loCert

 

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