(Go) PKCS11 Import a Private Key onto the HSM

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Demonstrates how to import an existing RSA private key onto the smartcard/token. The imported key is a token object, meaning it stays on the HSM and exists beyond the end of the PKCS11 session.

Note: This example requires Chilkat v9.5.0.96 or later.

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

    // Note: Chilkat's PKCS11 implementation runs on Windows, Linux, Mac OS X, and other supported operating systems.

    pkcs11 := chilkat.NewPkcs11()

    // Use the PKCS11 driver (.dll, .so, .dylib) for your particular HSM.
    // (The format of the path will change with the operating system.  Obviously, "C:/" is not used on non-Windows systems.
    pkcs11.SetSharedLibPath("C:/Program Files (x86)/Gemalto/IDGo 800 PKCS#11/IDPrimePKCS1164.dll")

    // Establish a logged-on session.
    pin := "0000"
    userType := 1
    success := pkcs11.QuickSession(userType,pin)
    if success == false {
        fmt.Println(pkcs11.LastErrorText())
        pkcs11.DisposePkcs11()
        return
    }

    // Let's import a certificate's private key onto the HSM.
    // First, we'll load the certificate from a .pfx (also known as .p12), which is a file format
    // that also includes the certificate's private key.
    cert := chilkat.NewCert()
    success = cert.LoadPfxFile("qa_data/pfx/ehealth.fgov.be_testing.p12","p12_password")
    if success == false {
        fmt.Println(cert.LastErrorText())
        pkcs11.DisposePkcs11()
        cert.DisposeCert()
        return
    }

    // Let's get the certificate's private key.
    privKey := cert.ExportPrivateKey()
    if cert.LastMethodSuccess() == false {
        fmt.Println(cert.LastErrorText())
        pkcs11.DisposePkcs11()
        cert.DisposeCert()
        return
    }

    // Build a PKCS11 template to provide additional information about the key to be imported.
    jsonTemplate := chilkat.NewJsonObject()

    // Indicate that the key is to be stored on the token.  It is NOT a session object.
    jsonTemplate.UpdateBool("token",true)

    // Indicate that the key can be used for signing.
    jsonTemplate.UpdateBool("sign",true)

    // Provide an arbitrary ID and label (anything you want).
    // The information in the ID and/or label provides one means for finding the key in future PKCS11 sessions.
    jsonTemplate.UpdateString("id_hex","010203040A0B0C0D0E0F")
    jsonTemplate.UpdateString("label","ehealth private key")

    // Import the key.  The private key handle is returned on success.  Otherwise 0 is returned.
    // If our only task for now is to simply import the key, we can ignore the returned handle, 
    // other than to check for success/failure.  Otherwise, the handle can be used in other PKCS11 operations.
    // This example just creates the key and does not use the returned handle.
    keyHandle := pkcs11.ImportPrivateKey(privKey,jsonTemplate)
    if keyHandle == 0 {
        fmt.Println(pkcs11.LastErrorText())
    } else {
        fmt.Println("key handle = ", keyHandle)
        fmt.Println("Successfully imported a private key onto the HSM.")
    }

    privKey.DisposePrivateKey()

    pkcs11.Logout()
    pkcs11.CloseSession()

    pkcs11.DisposePkcs11()
    cert.DisposeCert()
    jsonTemplate.DisposeJsonObject()