void SPAuthCheckPrv::ReadCheckFile()
{
// Read check prevention file
mGameSecondsBeforeNextCheck = 1; // default -> check
try
{
FileReader aReader;
if(!aReader.Open(gSPAuthCheck_FileName))
return;
unsigned short aNumBytes = aReader.ReadShort();
if(aNumBytes==0 || aReader.Available()<aNumBytes)
return;
char *aBuf = new char[aNumBytes];
std::auto_ptr<char> aDelBuf(aBuf);
aReader.ReadBytes(aBuf,aNumBytes);
aReader.Close();
ByteBufferPtr aDecrypt = mEncryptKey.Decrypt(aBuf,aNumBytes);
if(aDecrypt.get()==NULL)
return;
WONFile aFile(gSPAuthCheck_FileName);
ReadBuffer aReadBuf(aDecrypt->data(),aDecrypt->length());
std::string aSig;
aReadBuf.ReadString(aSig);
if(aSig!="magic")
return;
time_t aCreateTime = aFile.GetCreateTime();
time_t aCompareCreateTime = aReadBuf.ReadLong();
if(aCompareCreateTime != aCreateTime)
return;
mGameSecondsBeforeNextCheck = aReadBuf.ReadLong();
if(mGameSecondsBeforeNextCheck==0) // don't remove file in this case
return;
aFile.Remove();
}
catch(FileReaderException&)
{
}
catch(ReadBufferException&)
{
}
}
int main(int argc, char** argv) {
if (argc != 3) {
fprintf(stderr, "exef2paz v1.22 by asmodean\n\n");
fprintf(stderr, "usage: %s <input.paz> <game index>\n\n", argv[0]);
fprintf(stderr, "\t 0 = ef - the latter tale\n", argv[0]);
fprintf(stderr, "\t 1 = eden*\n", argv[0]);
return -1;
}
string in_filename(argv[1]);
unsigned long game_index = atol(argv[2]);
if (game_index >= GAME_COUNT) {
fprintf(stderr, "Unknown game index: %d\n", game_index);
return -1;
}
string prefix(as::stringtol(as::get_file_prefix(in_filename, true)));
game_info_t game_info = GAME_INFO[game_index];
key_info_t keys;
for (unsigned long i = 0; !game_info.keys[i].prefix.empty(); i++)
{
if (prefix == game_info.keys[i].prefix)
{
keys = game_info.keys[i];
}
}
if (keys.prefix.empty()) {
fprintf(stderr, "%s: don't know encryption key.\n", in_filename.c_str());
return -1;
}
// Hard to recognize individual sound files because they lack extension
bool is_audio = prefix == "bgm" || prefix == "se" || prefix == "voice" || prefix == "PMvoice";
bool is_mov = prefix == "mov";
int fd = as::open_or_die(in_filename, O_RDONLY | O_BINARY);
PAZHDR hdr;
read(fd, &hdr, sizeof(hdr));
char simple_key = hdr.toc_len >> 24;
lseek(fd, 0, SEEK_SET);
read_unobfuscate(fd, simple_key, &hdr, sizeof(hdr));
Blowfish bf;
unsigned char* toc_buff = new unsigned char[hdr.toc_len];
read_unobfuscate(fd, simple_key, toc_buff, hdr.toc_len);
bf.Set_Key(keys.toc_key, sizeof(keys.toc_key));
bf.Decrypt(toc_buff, hdr.toc_len);
PAZHDR2* hdr2 = (PAZHDR2*) toc_buff;
unsigned char* p = (unsigned char*) (hdr2 + 1);
unsigned char* mov_seed = NULL;
if (is_mov)
{
mov_seed = p;
p += 256;
}
for (unsigned long i = 0; i < hdr2->entry_count; i++)
{
string filename = (char*) p;
p += filename.length() + 1;
PAZENTRY* entry = (PAZENTRY*) p;
p += sizeof(*entry);
unsigned long len = entry->padded_length;
unsigned char* buff = new unsigned char[len];
lseek(fd, entry->offset, SEEK_SET);
read_unobfuscate(fd, simple_key, buff, len);
string crud;
if (filename.find(".png") != string::npos)
{
crud = game_info.crud.png;
}
else if (filename.find(".ogg") != string::npos || is_audio)
{
crud = game_info.crud.ogg;
}
else if (filename.find(".sc") != string::npos)
{
crud = game_info.crud.sc;
}
else if (filename.find(".avi") != string::npos)
{
crud = game_info.crud.avi;
}
string seed = as::stringtol(filename) + as::stringf(" %08X ", entry->length) + crud;
if (is_mov)
{
decrypt_mov(mov_seed, seed, buff, len);
}
else
{
bf.Set_Key(keys.dat_key, sizeof(keys.dat_key));
bf.Decrypt(buff, len);
if (!crud.empty()) {
unobfuscate3(seed, buff, len);
}
}
as::make_path(filename);
as::write_file(filename, buff, entry->length);
delete [] buff;
}
delete [] toc_buff;
close(fd);
return 0;
}
int main()
{
string str_src = "abcdefghijklmnopq";
string str_key = "key";
vector<char> key;
for (auto it = str_key.begin(); it != str_key.end(); it++)
{
key.push_back(*it);
}
vector<char> input;
vector<char> output;
Blowfish *tool = new Blowfish(key); //设置密钥
for (auto it : str_src)
{
input.push_back(it);
}
output = tool->Encrypt(input); //加密后字串
//解密没有直接处理string的方法，只有vector<char>的方法
input.clear();
for (auto it = output.begin(); it != output.end(); it++)
//等效于
//for (auto it : output)
{
input.push_back(*it);
}
output.clear();
output = tool->Decrypt(input);
return 0;
}
