added de/encryption support for the jpn file. also fixed a minor error

Author: LawnMeower

Line__Crypt.exe

@@ -62,13 +62,21 @@ namespace Line__Crypt
 		return size;
 	}
 
-	static void Decrypt(void* file, uint32_t fileSize)
+	static void Decrypt(void* file, uint32_t fileSize, bool isJPN)
 	{
 		//prepare key values and parameters
-		int key0 = 0x000cd8f3;
-		int key1 = 0x9b36bb94;
-		int key2 = 0xaf8910be;
+		int saltUSA = 0x180a;
+		int saltJPN = 0x0ce0;
 		int salt = 0;
+		int key0USA = 0x000cd8f3;
+		int key0JPN = 0x0004f107;
+		int key0 = isJPN ? key0JPN : key0USA;
+		int key1USA = 0x9b36bb94;
+		int key1JPN = 0xb5fb6483;
+		int key1 = isJPN ? key1JPN : key1USA;
+		int key2USA = 0xaf8910be;
+		int key2JPN = 0xdeaddead;
+		int key2 = isJPN ? key2JPN : key2USA;
 		int fileSizeExtended = (fileSize + 0x1f) & ~0; //filesize next multiple of 0x20
 		int fileLocation = reinterpret_cast<int>(file);
 		int r8 = rlwinm(fileSizeExtended, 30, 2, 31);
@@ -83,7 +91,7 @@ namespace Line__Crypt
 		{
 			//decrypting 1st 4 bytes of 0x20 bytes block
 			int keyProd = key2 * key1;
-			salt = 0x180a;
+			salt = isJPN ? saltJPN : saltUSA;
 			r3 = lwz(0, rwLocation);
 			int r29 = keyProd + key0;
 			r3 ^= r29;
@@ -176,14 +184,14 @@ namespace Line__Crypt
 			return;
 
 		//set parameters for last block processing
-		r3 = 0x9b370000;
+		r3 = isJPN ? 0xb5fb0000 : 0x9b370000;
 		int r4 = rlwinm(cryptedWords, 2, 0, 29);
-		r11 = r3, (short)0xbb94;
+		r11 = r3 + isJPN ? (short)0x6483 : (short)0xbb94;
 		r3 = 0x000d0000;
 		int r0 = r8 - cryptedWords;
 		rwLocation = fileLocation + r4;
-		r3 += (short)0xd8f3;
-		salt = 0x180a;
+		r3 += isJPN ? (short)0xf107 : (short)0xd8f3;
+		salt = isJPN ? saltJPN : saltUSA;
 
 		//crypt last block
 		for (int i = r0; i > 0; --i)

Line__Crypt.h

@@ -1,8 +1,9 @@
 #include"Line__Crypt.h"
+#include <algorithm> 
 
 int wmain(int argc, wchar_t** argv)
 {
-	if (argc <= 1)
+	if (argc <= 2)
 	{
 		std::cout << "empty argument";
 		return 3;
@@ -19,9 +20,12 @@ int wmain(int argc, wchar_t** argv)
 		return 1;
 	}
 
-	Line__Crypt::Decrypt(file, size);
+	std::wstring region(argv[2]);
+	std::transform(region.begin(), region.end(), region.begin(), towupper);
+	bool isJPN = !(bool)region.compare(L"JPN");
+
+	Line__Crypt::Decrypt(file, size, isJPN);
 
-	std::wcout << "bleh " << path.substr(0, path.length() - 3);
 	if (!path.substr(path.length() - 3).compare(L"bin"))
 	{
 		path = path.substr(0, path.length() - 3).append(L"rel.lz");