-#ifndef APT_PRIVATE_DOWNLOAD_H
-#define APT_PRIVATE_DOWNLOAD_H
-
-class pkgAcquire;
-
-bool CheckAuth(pkgAcquire& Fetcher, bool const PromptUser);
-bool AcquireRun(pkgAcquire &Fetcher, int const PulseInterval, bool * const Failure, bool * const TransientNetworkFailure);
-
-#endif
+#ifndef APT_PRIVATE_DOWNLOAD_H
+#define APT_PRIVATE_DOWNLOAD_H
+
+#include <apt-pkg/macros.h>
+
+class pkgAcquire;
+
+// Check if all files in the fetcher are authenticated
+APT_PUBLIC bool CheckAuth(pkgAcquire& Fetcher, bool const PromptUser);
+
+// show a authentication warning prompt and return true if the system
+// should continue
+APT_PUBLIC bool AuthPrompt(std::string UntrustedList, bool const PromptUser);
+
+APT_PUBLIC bool AcquireRun(pkgAcquire &Fetcher, int const PulseInterval, bool * const Failure, bool * const TransientNetworkFailure);
+
+#endif