[FAB-17517] Only Initialize specified provider

Code currently tries to initialize multiple providers based on
provided config Opts being nil or not.

This update ensures that only specified provider is initialized
based on ProviderName.

This fixes "Failed initializing PKCS11.BCCSP %!s(<nil>)" error
when the code complied with PKCS11 enabled expect configuration
to not be nil even when Provider is set to SW.

Signed-off-by: Ahmed Sajid <ahmed.sajid@securekey.com>
(cherry picked from commit 2be701459257f9b12243fe15ccc35edf63f4c91b)

bccsp/factory/pkcs11.go

@@ -69,7 +69,7 @@ func setFactories(config *FactoryOpts) error {
 	}
 
 	// PKCS11-Based BCCSP
-	if config.Pkcs11Opts != nil {
+	if config.ProviderName == "PKCS11" && config.Pkcs11Opts != nil {
 		f := &PKCS11Factory{}
 		err := initBCCSP(f, config)
 		if err != nil {

bccsp/factory/pkcs11_test.go

@@ -41,6 +41,32 @@ func TestSetFactories(t *testing.T) {
 	assert.NoError(t, err)
 }
 
+func TestSetFactoriesWithMultipleProviders(t *testing.T) {
+	// testing SW Provider and ensuring other providers are not initialized
+	factoriesInitError = nil
+
+	err := setFactories(&FactoryOpts{
+		ProviderName: "SW",
+		SwOpts:       &SwOpts{},
+		Pkcs11Opts:   &pkcs11.PKCS11Opts{},
+	})
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "Failed initializing SW.BCCSP")
+	assert.NotContains(t, err.Error(), "Failed initializing PKCS11.BCCSP")
+
+	// testing PKCS11 Provider and ensuring other providers are not initialized
+	factoriesInitError = nil
+
+	err = setFactories(&FactoryOpts{
+		ProviderName: "PKCS11",
+		SwOpts:       &SwOpts{},
+		Pkcs11Opts:   &pkcs11.PKCS11Opts{},
+	})
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "Failed initializing PKCS11.BCCSP")
+	assert.NotContains(t, err.Error(), "Failed initializing SW.BCCSP")
+}
+
 func TestSetFactoriesInvalidArgs(t *testing.T) {
 	err := setFactories(&FactoryOpts{
 		ProviderName: "SW",