1 files changed, 146 insertions, 0 deletions
diff --git a/src/core/base.h b/src/core/base.h
new file mode 100644
index 000000000..b05feaacb
--- /dev/null
+++ b/src/core/base.h
@@ -0,0 +1,146 @@
+/*************************************************
+* Base Classes Header File                       *
+* (C) 1999-2007 Jack Lloyd                       *
+*************************************************/
+
+#ifndef BOTAN_BASE_H__
+#define BOTAN_BASE_H__
+
+#include <botan/exceptn.h>
+#include <botan/symkey.h>
+
+namespace Botan {
+
+/*************************************************
+* Constants                                      *
+*************************************************/
+static const u32bit DEFAULT_BUFFERSIZE = BOTAN_DEFAULT_BUFFER_SIZE;
+
+/*************************************************
+* Symmetric Algorithm                            *
+*************************************************/
+class BOTAN_DLL SymmetricAlgorithm
+   {
+   public:
+      const u32bit MAXIMUM_KEYLENGTH, MINIMUM_KEYLENGTH, KEYLENGTH_MULTIPLE;
+
+      virtual std::string name() const = 0;
+
+      void set_key(const SymmetricKey&) throw(Invalid_Key_Length);
+      void set_key(const byte[], u32bit) throw(Invalid_Key_Length);
+      bool valid_keylength(u32bit) const;
+      SymmetricAlgorithm(u32bit, u32bit, u32bit);
+      virtual ~SymmetricAlgorithm() {}
+   private:
+      virtual void key(const byte[], u32bit) = 0;
+   };
+
+/*************************************************
+* Block Cipher                                   *
+*************************************************/
+class BOTAN_DLL BlockCipher : public SymmetricAlgorithm
+   {
+   public:
+      const u32bit BLOCK_SIZE;
+
+      void encrypt(const byte in[], byte out[]) const { enc(in, out); }
+      void decrypt(const byte in[], byte out[]) const { dec(in, out); }
+      void encrypt(byte block[]) const { enc(block, block); }
+      void decrypt(byte block[]) const { dec(block, block); }
+
+      virtual BlockCipher* clone() const = 0;
+      virtual void clear() throw() = 0;
+
+      BlockCipher(u32bit, u32bit, u32bit = 0, u32bit = 1);
+      virtual ~BlockCipher() {}
+   private:
+      virtual void enc(const byte[], byte[]) const = 0;
+      virtual void dec(const byte[], byte[]) const = 0;
+   };
+
+/*************************************************
+* Stream Cipher                                  *
+*************************************************/
+class BOTAN_DLL StreamCipher : public SymmetricAlgorithm
+   {
+   public:
+      const u32bit IV_LENGTH;
+      void encrypt(const byte i[], byte o[], u32bit len) { cipher(i, o, len); }
+      void decrypt(const byte i[], byte o[], u32bit len) { cipher(i, o, len); }
+      void encrypt(byte in[], u32bit len) { cipher(in, in, len); }
+      void decrypt(byte in[], u32bit len) { cipher(in, in, len); }
+
+      virtual void resync(const byte[], u32bit);
+      virtual void seek(u32bit);
+
+      virtual StreamCipher* clone() const = 0;
+      virtual void clear() throw() = 0;
+
+      StreamCipher(u32bit, u32bit = 0, u32bit = 1, u32bit = 0);
+      virtual ~StreamCipher() {}
+   private:
+      virtual void cipher(const byte[], byte[], u32bit) = 0;
+   };
+
+/*************************************************
+* Buffered Computation                           *
+*************************************************/
+class BOTAN_DLL BufferedComputation
+   {
+   public:
+      const u32bit OUTPUT_LENGTH;
+      void update(const byte[], u32bit);
+      void update(const MemoryRegion<byte>&);
+      void update(const std::string&);
+      void update(byte);
+      void final(byte out[]) { final_result(out); }
+      SecureVector<byte> final();
+      SecureVector<byte> process(const byte[], u32bit);
+      SecureVector<byte> process(const MemoryRegion<byte>&);
+      SecureVector<byte> process(const std::string&);
+      BufferedComputation(u32bit);
+      virtual ~BufferedComputation() {}
+   private:
+      BufferedComputation& operator=(const BufferedComputation&);
+      virtual void add_data(const byte[], u32bit) = 0;
+      virtual void final_result(byte[]) = 0;
+   };
+
+/*************************************************
+* Hash Function                                  *
+*************************************************/
+class BOTAN_DLL HashFunction : public BufferedComputation
+   {
+   public:
+      const u32bit HASH_BLOCK_SIZE;
+
+      virtual HashFunction* clone() const = 0;
+      virtual std::string name() const = 0;
+      virtual void clear() throw() = 0;
+
+      HashFunction(u32bit, u32bit = 0);
+      virtual ~HashFunction() {}
+   private:
+      HashFunction& operator=(const HashFunction&);
+   };
+
+/*************************************************
+* Message Authentication Code                    *
+*************************************************/
+class BOTAN_DLL MessageAuthenticationCode : public BufferedComputation,
+                                  public SymmetricAlgorithm
+   {
+   public:
+      virtual bool verify_mac(const byte[], u32bit);
+
+      virtual MessageAuthenticationCode* clone() const = 0;
+      virtual std::string name() const = 0;
+      virtual void clear() throw() = 0;
+
+      MessageAuthenticationCode(u32bit, u32bit, u32bit = 0, u32bit = 1);
+      virtual ~MessageAuthenticationCode() {}
+   };
+
+}
+
+#endif