Initial commit of Command & Conquer Renegade source code.

Code/Tools/RenegadeGR/WENCRYPT.H

@@ -0,0 +1,96 @@
+/*
+**	Command & Conquer Renegade(tm)
+**	Copyright 2025 Electronic Arts Inc.
+**
+**	This program is free software: you can redistribute it and/or modify
+**	it under the terms of the GNU General Public License as published by
+**	the Free Software Foundation, either version 3 of the License, or
+**	(at your option) any later version.
+**
+**	This program is distributed in the hope that it will be useful,
+**	but WITHOUT ANY WARRANTY; without even the implied warranty of
+**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+**	GNU General Public License for more details.
+**
+**	You should have received a copy of the GNU General Public License
+**	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/****************************************************************************\
+*        C O N F I D E N T I A L --- W E S T W O O D   S T U D I O S         *
+******************************************************************************
+Project Name: Generic Game Results Server
+File Name   : wencrypt.h
+Author      : Joe Howes
+Start Date  : Jul 9, 1999
+Last Update :
+------------------------------------------------------------------------------
+ 
+A simple encryption system for game results packets.  Specifically designed
+to work only with unsigned char buffers of least 15 bytes long.
+ 
+\****************************************************************************/
+
+
+#ifndef __WENCRYPT_H__
+#define __WENCRYPT_H__
+
+
+/*------------------------------------------------------------------------------.
+| BUILD TYPE									|
+| In the interest of smaller code and distributing as little of our		|
+| encryption system as possible with game CDs, this preprocessor directive	|
+| should be uncommented when building a client.  When uncommented, only those	|
+| functions relevant to encrypting will be compiled, and those relevant only	|
+| to decrypting will not.							|
+`------------------------------------------------------------------------------*/
+#define __CLIENT__
+
+
+/*------------------------------------------------------------------------------.
+| PROTOTYPES									|
+`------------------------------------------------------------------------------*/
+
+#ifndef __CLIENT__
+unsigned char*	DecryptPacket(unsigned char* encbuf, int* size);
+#endif
+
+// These are for munching the data
+unsigned char* PrepareEncryptedPacket(unsigned char* packet, int* size);
+void 		RLEncode(unsigned char* src, unsigned char* dst, int* size);
+float 		ran3(long* idnum);
+void 		GenerateKey(unsigned char* key, int len, long seed);
+unsigned char* 	SimpleEncrypt(const unsigned char* src, int* len);
+#ifndef __CLIENT__
+unsigned char* 	RLDecode(unsigned char* src, int* size);
+unsigned char*	SimpleDecrypt(unsigned char* buf, int* len);
+#endif
+
+
+/*------------------------------------------------------------------------------.
+| MACROS									|
+`------------------------------------------------------------------------------*/
+// For key generation
+#define MBIG    1000000000
+#define MSEED   161803398
+#define MZ      0
+#define FAC     (1.0/MBIG)
+ 
+// Errors
+#define ERR_SPURIOUS_ESCAPE     -1      // A single escape was found at the end of a compressed
+                                        // buffer.  Should never happen as escapes in the
+                                        // stream are stuffed and should otherwise indicate
+                                        // the start of a token.
+ 
+#define ERR_BUFFER_TOO_SMALL    -2      // The buffer being passed to Simple Encrypt is
+                                        // smaller than 15 bytes, which is too small to work
+                                        // with it's seed-stuffing.  A gameres packet should
+                                        // never be as small as 15 bytes anyway.
+
+#define ERR_BAD_SEED		-3      // The seed value being passed is zero.  Not a valid
+					// seed.
+
+
+
+#endif
+