diff options
Diffstat (limited to 'botan/src/pubkey/elgamal/elgamal.h')
-rw-r--r-- | botan/src/pubkey/elgamal/elgamal.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/botan/src/pubkey/elgamal/elgamal.h b/botan/src/pubkey/elgamal/elgamal.h new file mode 100644 index 0000000..93e640f --- /dev/null +++ b/botan/src/pubkey/elgamal/elgamal.h @@ -0,0 +1,59 @@ +/* +* ElGamal +* (C) 1999-2007 Jack Lloyd +* +* Distributed under the terms of the Botan license +*/ + +#ifndef BOTAN_ELGAMAL_H__ +#define BOTAN_ELGAMAL_H__ + +#include <botan/dl_algo.h> +#include <botan/elg_core.h> + +namespace Botan { + +/* +* ElGamal Public Key +*/ +class BOTAN_DLL ElGamal_PublicKey : public PK_Encrypting_Key, + public virtual DL_Scheme_PublicKey + { + public: + std::string algo_name() const { return "ElGamal"; } + DL_Group::Format group_format() const { return DL_Group::ANSI_X9_42; } + + SecureVector<byte> encrypt(const byte[], u32bit, + RandomNumberGenerator& rng) const; + u32bit max_input_bits() const; + + ElGamal_PublicKey() {} + ElGamal_PublicKey(const DL_Group&, const BigInt&); + protected: + ELG_Core core; + private: + void X509_load_hook(); + }; + +/* +* ElGamal Private Key +*/ +class BOTAN_DLL ElGamal_PrivateKey : public ElGamal_PublicKey, + public PK_Decrypting_Key, + public virtual DL_Scheme_PrivateKey + { + public: + SecureVector<byte> decrypt(const byte[], u32bit) const; + + bool check_key(RandomNumberGenerator& rng, bool) const; + + ElGamal_PrivateKey() {} + ElGamal_PrivateKey(RandomNumberGenerator&, const DL_Group&, + const BigInt& = 0); + private: + void PKCS8_load_hook(RandomNumberGenerator&, bool = false); + }; + +} + +#endif |