diff options
Diffstat (limited to 'old/botan/src/pubkey/dh/dh_op.h')
-rw-r--r-- | old/botan/src/pubkey/dh/dh_op.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/old/botan/src/pubkey/dh/dh_op.h b/old/botan/src/pubkey/dh/dh_op.h new file mode 100644 index 0000000..50f3d78 --- /dev/null +++ b/old/botan/src/pubkey/dh/dh_op.h @@ -0,0 +1,45 @@ +/* +* DH Operations +* (C) 1999-2008 Jack Lloyd +* +* Distributed under the terms of the Botan license +*/ + +#ifndef BOTAN_DH_OPS_H__ +#define BOTAN_DH_OPS_H__ + +#include <botan/dl_group.h> +#include <botan/reducer.h> +#include <botan/pow_mod.h> + +namespace Botan { + +/* +* DH Operation Interface +*/ +class BOTAN_DLL DH_Operation + { + public: + virtual BigInt agree(const BigInt&) const = 0; + virtual DH_Operation* clone() const = 0; + virtual ~DH_Operation() {} + }; + +/* +* Botan's Default DH Operation +*/ +class BOTAN_DLL Default_DH_Op : public DH_Operation + { + public: + BigInt agree(const BigInt& i) const { return powermod_x_p(i); } + DH_Operation* clone() const { return new Default_DH_Op(*this); } + + Default_DH_Op(const DL_Group& group, const BigInt& x) : + powermod_x_p(x, group.get_p()) {} + private: + Fixed_Exponent_Power_Mod powermod_x_p; + }; + +} + +#endif |