1 files changed, 45 insertions, 0 deletions
diff --git a/src/core/s2k.h b/src/core/s2k.h
new file mode 100644
index 000000000..031592513
--- /dev/null
+++ b/src/core/s2k.h
@@ -0,0 +1,45 @@
+/*************************************************
+* S2K Header File                                *
+* (C) 1999-2007 Jack Lloyd                       *
+*************************************************/
+
+#ifndef BOTAN_S2K_H__
+#define BOTAN_S2K_H__
+
+#include <botan/symkey.h>
+#include <botan/rng.h>
+
+namespace Botan {
+
+/*************************************************
+* S2K Interface                                  *
+*************************************************/
+class BOTAN_DLL S2K
+   {
+   public:
+      virtual S2K* clone() const = 0;
+      virtual std::string name() const = 0;
+      virtual void clear() {}
+
+      OctetString derive_key(u32bit, const std::string&) const;
+
+      void set_iterations(u32bit);
+      void change_salt(const byte[], u32bit);
+      void change_salt(const MemoryRegion<byte>&);
+      void new_random_salt(RandomNumberGenerator& rng, u32bit);
+
+      u32bit iterations() const { return iter; }
+      SecureVector<byte> current_salt() const { return salt; }
+
+      S2K() { iter = 0; }
+      virtual ~S2K() {}
+   private:
+      virtual OctetString derive(u32bit, const std::string&,
+                                 const byte[], u32bit, u32bit) const = 0;
+      SecureVector<byte> salt;
+      u32bit iter;
+   };
+
+}
+
+#endif