1 files changed, 32 insertions, 0 deletions
diff --git a/src/math/numbertheory/blinding.h b/src/math/numbertheory/blinding.h
new file mode 100644
index 000000000..958686fb1
--- /dev/null
+++ b/src/math/numbertheory/blinding.h
@@ -0,0 +1,32 @@
+/*************************************************
+* Blinder Header File                            *
+* (C) 1999-2007 Jack Lloyd                       *
+*************************************************/
+
+#ifndef BOTAN_BLINDER_H__
+#define BOTAN_BLINDER_H__
+
+#include <botan/bigint.h>
+#include <botan/reducer.h>
+
+namespace Botan {
+
+/*************************************************
+* Blinding Function Object                       *
+*************************************************/
+class BOTAN_DLL Blinder
+   {
+   public:
+      BigInt blind(const BigInt&) const;
+      BigInt unblind(const BigInt&) const;
+
+      Blinder() {}
+      Blinder(const BigInt&, const BigInt&, const BigInt&);
+   private:
+      Modular_Reducer reducer;
+      mutable BigInt e, d;
+   };
+
+}
+
+#endif