1 files changed, 53 insertions, 0 deletions
diff --git a/botan/src/pubkey/nr/nr_op.h b/botan/src/pubkey/nr/nr_op.h
new file mode 100644
index 0000000..cba1465
--- /dev/null
+++ b/botan/src/pubkey/nr/nr_op.h
@@ -0,0 +1,53 @@
+/*
+* NR Operations
+* (C) 1999-2008 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_NR_OPS_H__
+#define BOTAN_NR_OPS_H__
+
+#include <botan/pow_mod.h>
+#include <botan/numthry.h>
+#include <botan/reducer.h>
+#include <botan/dl_group.h>
+
+namespace Botan {
+
+/*
+* NR Operation
+*/
+class BOTAN_DLL NR_Operation
+   {
+   public:
+      virtual SecureVector<byte> verify(const byte[], u32bit) const = 0;
+      virtual SecureVector<byte> sign(const byte[], u32bit,
+                                      const BigInt&) const = 0;
+      virtual NR_Operation* clone() const = 0;
+      virtual ~NR_Operation() {}
+   };
+
+/*
+* Botan's Default NR Operation
+*/
+class BOTAN_DLL Default_NR_Op : public NR_Operation
+   {
+   public:
+      SecureVector<byte> verify(const byte[], u32bit) const;
+      SecureVector<byte> sign(const byte[], u32bit, const BigInt&) const;
+
+      NR_Operation* clone() const { return new Default_NR_Op(*this); }
+
+      Default_NR_Op(const DL_Group&, const BigInt&, const BigInt&);
+   private:
+      const BigInt x, y;
+      const DL_Group group;
+      Fixed_Base_Power_Mod powermod_g_p, powermod_y_p;
+      Modular_Reducer mod_p, mod_q;
+   };
+
+
+}
+
+#endif