1 files changed, 85 insertions, 0 deletions
diff --git a/botan/build/botan/eax.h b/botan/build/botan/eax.h
new file mode 100644
index 0000000..1bb2e51
--- /dev/null
+++ b/botan/build/botan/eax.h
@@ -0,0 +1,85 @@
+/*
+* EAX Mode
+* (C) 1999-2007 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_EAX_H__
+#define BOTAN_EAX_H__
+
+#include <botan/basefilt.h>
+#include <botan/block_cipher.h>
+#include <botan/mac.h>
+
+namespace Botan {
+
+/*
+* EAX Base Class
+*/
+class BOTAN_DLL EAX_Base : public Keyed_Filter
+   {
+   public:
+      void set_key(const SymmetricKey&);
+      void set_iv(const InitializationVector&);
+      void set_header(const byte[], u32bit);
+      std::string name() const;
+
+      bool valid_keylength(u32bit) const;
+
+      ~EAX_Base() { delete cipher; delete mac; }
+   protected:
+      EAX_Base(BlockCipher*, u32bit);
+      void start_msg();
+      void increment_counter();
+
+      const u32bit TAG_SIZE, BLOCK_SIZE;
+      BlockCipher* cipher;
+      MessageAuthenticationCode* mac;
+      SecureVector<byte> nonce_mac, header_mac, state, buffer;
+      u32bit position;
+   };
+
+/*
+* EAX Encryption
+*/
+class BOTAN_DLL EAX_Encryption : public EAX_Base
+   {
+   public:
+      EAX_Encryption(BlockCipher* ciph, u32bit tag_size = 0) :
+         EAX_Base(ciph, tag_size) {}
+
+      EAX_Encryption(BlockCipher* ciph, const SymmetricKey& key,
+                     const InitializationVector& iv,
+                     u32bit tag_size) : EAX_Base(ciph, tag_size)
+         {
+         set_key(key);
+         set_iv(iv);
+         }
+   private:
+      void write(const byte[], u32bit);
+      void end_msg();
+   };
+
+/*
+* EAX Decryption
+*/
+class BOTAN_DLL EAX_Decryption : public EAX_Base
+   {
+   public:
+      EAX_Decryption(BlockCipher* ciph, u32bit tag_size = 0);
+
+      EAX_Decryption(BlockCipher* ciph, const SymmetricKey& key,
+                     const InitializationVector& iv,
+                     u32bit tag_size = 0);
+   private:
+      void write(const byte[], u32bit);
+      void do_write(const byte[], u32bit);
+      void end_msg();
+      SecureVector<byte> queue;
+      u32bit queue_start, queue_end;
+   };
+
+}
+
+#endif