Initial checkin1.5.6

1 files changed, 59 insertions, 0 deletions

diff --git a/include/elgamal.h b/include/elgamal.h
new file mode 100644
index 000000000..3731e8f1b
--- /dev/null
+++ b/include/elgamal.h
@@ -0,0 +1,59 @@
+/*************************************************
+* ElGamal Header File                            *
+* (C) 1999-2006 The Botan Project                *
+*************************************************/
+
+#ifndef BOTAN_ELGAMAL_H__
+#define BOTAN_ELGAMAL_H__
+
+#include <botan/dl_algo.h>
+#include <botan/pk_core.h>
+#include <botan/blinding.h>
+
+namespace Botan {
+
+/*************************************************
+* ElGamal Public Key                             *
+*************************************************/
+class ElGamal_PublicKey : public PK_Encrypting_Key,
+                          public virtual DL_Scheme_PublicKey
+   {
+   public:
+      SecureVector<byte> encrypt(const byte[], u32bit) const;
+      u32bit max_input_bits() const;
+
+      ElGamal_PublicKey(const DL_Group&, const BigInt&);
+   protected:
+      std::string algo_name() const { return "ElGamal"; }
+      ElGamal_PublicKey() {}
+
+      ELG_Core core;
+   private:
+      friend X509_PublicKey* get_public_key(const std::string&);
+      DL_Group::Format group_format() const { return DL_Group::ANSI_X9_42; }
+      void X509_load_hook();
+   };
+
+/*************************************************
+* ElGamal Private Key                            *
+*************************************************/
+class 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(bool) const;
+
+      ElGamal_PrivateKey(const DL_Group&);
+      ElGamal_PrivateKey(const DL_Group&, const BigInt&, const BigInt& = 0);
+   private:
+      friend PKCS8_PrivateKey* get_private_key(const std::string&);
+      void PKCS8_load_hook();
+      ElGamal_PrivateKey() {}
+   };
+
+}
+
+#endif