IOSAD-177 (Internal) access to passphrase provider

pEpObjCAdapter/PEPObjCAdapter+Internal.h

@@ -11,6 +11,7 @@
 
 #import "PEPQueue.h"
 #import "PEPInternalSession.h"
+#import "PEPPassphraseProviderProtocol.h"
 
 NS_ASSUME_NONNULL_BEGIN
 
@@ -32,6 +33,9 @@ NS_ASSUME_NONNULL_BEGIN
 /// The passphrase to be used for new own keys, can be `nil`.
 + (NSString * _Nullable)passphraseForNewKeys;
 
+/// Get the currently set passphrase provider.
++ (id<PEPPassphraseProviderProtocol> _Nullable)passphraseProvider;
+
 @end
 
 NS_ASSUME_NONNULL_END

pEpObjCAdapter/PEPObjCAdapter.m

@@ -101,6 +101,11 @@ static id<PEPPassphraseProviderProtocol> s_passphraseProvider = nil;
     s_passphraseProvider = passphraseProvider;
 }
 
++ (id<PEPPassphraseProviderProtocol> _Nullable)passphraseProvider
+{
+    return s_passphraseProvider;
+}
+
 #pragma mark - DB PATHS
 
 + (void)initialize