use base64 alphabet directly

base64.cpp

@@ -27,6 +27,11 @@ namespace data
 		       '4', '5', '6', '7', '8', '9', '-', '~'
 	};
 
+	const char * GetBase64SubstitutionTable ()
+	{
+		return T64;
+	}	
+	
 	/*
 	* Reverse Substitution Table (built in run time)
 	*/

base64.h

@@ -11,9 +11,9 @@ namespace data
 
 	size_t ByteStreamToBase64 (const uint8_t * InBuffer, size_t InCount, char * OutBuffer, size_t len);
 	size_t Base64ToByteStream (const char * InBuffer, size_t InCount, uint8_t * OutBuffer, size_t len );
+	const char * GetBase64SubstitutionTable ();	
 	
 	size_t Base32ToByteStream (const char * inBuf, size_t len, uint8_t * outBuf, size_t outLen);
-
 }
 }