Initial commit of Command & Conquer Renegade source code.

2025-12-16 23:51:41 -05:00 · 2025-02-27 16:39:46 +00:00
parent 74ab8fa5e0
commit 58ed459113
4918 changed files with 1366710 additions and 0 deletions
--- a/Code/Launcher/BFISH.H
+++ b/Code/Launcher/BFISH.H
@@ -0,0 +1,105 @@
+/*
+**	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 : Blowfish Component                                           * 
+ *                                                                                             * 
+ *                     $Archive:: /Commando/Code/Launcher/BFISH.H                             $* 
+ *                                                                                             * 
+ *                      $Author:: Denzil_l                                                    $*
+ *                                                                                             * 
+ *                     $Modtime:: 12/02/97 9:35p                                              $*
+ *                                                                                             * 
+ *                    $Revision:: 1                                                           $*
+ *                                                                                             *
+ *---------------------------------------------------------------------------------------------* 
+ * Functions:                                                                                  * 
+ * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
+
+#ifndef BFISH_H
+#define BFISH_H
+
+#include	<limits.h>
+
+
+/*
+**	This engine will process data blocks by encryption and decryption.
+**	The "Blowfish" algorithm is in the public domain. It uses
+**	a Feistal network (similar to IDEA). It has no known
+**	weaknesses, but is still relatively new. Blowfish is particularly strong
+**	against brute force attacks. It is also quite strong against linear and
+**	differential cryptanalysis. Unlike public key encription, it is very
+**	fast at encryption, as far as cryptography goes. Its weakness is that 
+**	it takes a relatively long time to set up with a new key (1/100th of 
+**	a second on a P6-200). The time to set up a key is equivalent to 
+**	encrypting 4240 bytes.
+*/
+class BlowfishEngine {
+	public:
+		BlowfishEngine(void) : IsKeyed(false) {}
+		~BlowfishEngine(void);
+
+		void Submit_Key(void const * key, int length);
+
+		int Encrypt(void const * plaintext, int length, void * cyphertext);
+		int Decrypt(void const * cyphertext, int length, void * plaintext);
+
+		/*
+		**	This is the maximum key length supported.
+		*/
+		enum {MAX_KEY_LENGTH=56,
+				BYTES_PER_BLOCK=8		// The number of bytes in each cypher block (don't change).
+		};
+
+	private:
+		bool IsKeyed;
+
+		void Sub_Key_Encrypt(unsigned long & left, unsigned long & right);
+
+		void Process_Block(void const * plaintext, void * cyphertext, unsigned long const * ptable);
+		void Initialize_Tables(void);
+
+		enum {
+			ROUNDS = 16		// Feistal round count (16 is standard).
+		};
+
+		/*
+		**	Initialization data for sub keys. The initial values are constant and
+		**	filled with a number generated from pi. Thus they are not random but
+		**	they don't hold a weak pattern either.
+		*/
+		static unsigned long const P_Init[ROUNDS+2];
+		static unsigned long const S_Init[4][UCHAR_MAX+1];
+
+		/*
+		**	Permutation tables for encryption and decryption.
+		*/
+ 		unsigned long P_Encrypt[ROUNDS+2];
+ 		unsigned long P_Decrypt[ROUNDS+2];
+
+		/*
+		**	S-Box tables (four).
+		*/
+		unsigned long bf_S[4][UCHAR_MAX+1];
+};
+
+#endif
+