1 files changed, 55 insertions, 0 deletions
diff --git a/include/basefilt.h b/include/basefilt.h
new file mode 100644
index 000000000..0febb3989
--- /dev/null
+++ b/include/basefilt.h
@@ -0,0 +1,55 @@
+/*************************************************
+* Basic Filters Header File                      *
+* (C) 1999-2006 The Botan Project                *
+*************************************************/
+
+#ifndef BOTAN_BASEFILT_H__
+#define BOTAN_BASEFILT_H__
+
+#include <botan/filter.h>
+
+namespace Botan {
+
+/*************************************************
+* Chain                                          *
+*************************************************/
+class Chain : public Fanout_Filter
+   {
+   public:
+      void write(const byte input[], u32bit length) { send(input, length); }
+
+      Chain(Filter* = 0, Filter* = 0, Filter* = 0, Filter* = 0);
+      Chain(Filter*[], u32bit);
+   };
+
+/*************************************************
+* Fork                                           *
+*************************************************/
+class Fork : public Fanout_Filter
+   {
+   public:
+      void write(const byte input[], u32bit length) { send(input, length); }
+      void set_port(u32bit n) { Fanout_Filter::set_port(n); }
+
+      Fork(Filter*, Filter*, Filter* = 0, Filter* = 0);
+      Fork(Filter*[], u32bit);
+   };
+
+/*************************************************
+* Keyed Filter                                   *
+*************************************************/
+class Keyed_Filter : public Filter
+   {
+   public:
+      virtual void set_key(const SymmetricKey&);
+      virtual void set_iv(const InitializationVector&) {}
+      virtual bool valid_keylength(u32bit) const;
+
+      Keyed_Filter() { base_ptr = 0; }
+   protected:
+      SymmetricAlgorithm* base_ptr;
+   };
+
+}
+
+#endif