* TunDevice: changed 'char* getTypeString()' to 'const char* getTypeString()'

      to fix warning: deprecated conversion from string constant to ‘char*’
 * removed libsrtp, use libgcrypt instead now
 * added buffer funcitons

 TODO:
 * fix IV issues
 * add authentification

1 files changed, 10 insertions, 3 deletions

diff --git a/buffer.h b/buffer.h
index 0506e98..37bbc29 100644
--- a/buffer.h
+++ b/buffer.h
@@ -45,6 +45,13 @@ public:
   virtual ~Buffer();
   Buffer(const Buffer &src);
   void operator=(const Buffer &src);
+  void operator=(const seq_nr_t &src);
+  void operator=(const sender_id_t &src);
+
+  // math operations to calculate IVs and keys
+  virtual Buffer operator^(const Buffer &xor_by) const;
+  virtual Buffer leftByteShift(u_int32_t width) const;
+  virtual Buffer rightByteShift(u_int32_t width) const;
 
   u_int32_t resizeFront(u_int32_t new_length);
   u_int32_t resizeBack(u_int32_t new_length);
@@ -54,12 +61,12 @@ public:
   u_int8_t operator[](u_int32_t index) const;
   void printHexDump() const;
 
-protected:
   operator u_int8_t*(); // just for write/read tun and packetSource
+protected:
   friend class TunDevice;
   friend class UDPPacketSource;
-  friend class AesIcmCypher;
-  friend class KeyDerivation;   // 
+//  friend class AesIcmCypher;
+//  friend class KeyDerivation;   // 
 
   u_int8_t *buf_;
   u_int32_t length_;