---==============================--- xpcrypt - Xploder PSX Crypto Tool Copyright (C) 2007, 2009 misfire ---=================================---

Welcome to xpcrypt! This program will decrypt and encrypt cheat codes and ROMs for Xploder PSX.

---============--- Version history ---===============---

v1.1 (May 10 2009)

• Rewrote most of xpcrypt.
• Add decryption/encryption of Xploder ROMs.
• Use CMake as build system for portability.
• Upgrade to GPL v3.

v1.0 (Jul 4 2007)

• Initial public release

---==========--- About xpcrypt ---=============---

Even though I cracked the Xploder code encryption many years ago, I never released an actual crypto program publicly. (I only put out the reverse engineered crypto routines but nobody used them to develop a program.)

However, here is xpcrypt, a simple console application which allows you to decrypt or encrypt Xploder codes and ROMs for PSX.

---==--- Build ---=====---

To build xpcrypt, simply run: $ make

Of course, you can also install it: $ make install

CMake is supported too: $ mkdir build $ cd build/ $ cmake .. $ make $ make install

---==--- Usage ---=====---

Usage: xpcrypt [options] [input ROM] [output ROM]

Options are: -d/--decrypt-codes decrypt codes (default) -e/--encrypt-codes encrypt codes with key [4,5,6,7] -r/--rom decrypt or encrypt ROM -h/--help display this information -V/--version display the version of xpcrypt

By default, xpcrypt reads codes from stdin, decrypts them, and writes them to stdout (-d option). Use the -e option together with an encryption key if you want to encrypt codes instead; valid keys are 4, 5, 6, and 7. Make use of redirects to read codes from (<) or write them to text files (>).

Further, you can decrypt or encrypt Xploder ROMs. Simply pass the -r option plus input and output file names to xpcrypt. It automatically detects if the ROM needs to be decrypted or encrypted.

---====--- Samples ---=======---

Decrypt some codes: $ ./xpcrypt 76621A3E 5450 ; input four encrypted codes 865895E6 8D5A 96621A3E 5450 865895E6 659A 700CC7EA FBFE ; decrypted output starts here 80024292 3C00 900CC7EA FBFE 80024292 1440

Encrypt a code with key 7: $ ./xpcrypt -e 7 3001F012 00A0 377EB8E8 15D5

Decrypt codes from text file foo.txt and print them to the screen: $ ./xpcrypt < foo.txt ...

Decrypt codes from foo.txt and write them to bar.txt: $ ./xpcrypt < foo.txt > bar.txt

Decrypt encrypted ROM foo.fcd to bar.rom: $ ./xpcrypt -r foo.fcd bar.rom

---=======--- Disclaimer ---==========---

THIS PROGRAM IS NOT LICENSED, ENDORSED, NOR SPONSORED BY SONY COMPUTER ENTERTAINMENT, INC. NOR FIRE INTERNATIONAL, LTD. ALL TRADEMARKS ARE PROPERTY OF THEIR RESPECTIVE OWNERS.

xpcrypt comes with ABSOLUTELY NO WARRANTY. It is covered by the GNU General Public License. Please see file COPYING for further information.

---===========--- Special thanks ---==============---

Thanks to Parasyte for his help on the 7K encryption.

Greets to all the people that contribute to our code hacking community!

---====--- Contact ---=======---

misfire [AT] xploderfreax [DOT] de

If you enjoy xpcrypt, please consider a PayPal donation to my e-mail address above. Thank you.

---======================--- HACKING NEEDS TO BE FREE! ---=========================---