hey, I am writing a password cracker. But I now have been thinking about separating the word generator from the actual encrypt and check function (for the sake of flexibility and convenience). I noticed John the Ripper does some operations like this. I was thinking something like this:
wordgen --stdout | cracker <cracker options>
wordgen --stdout | --stdin cracker <cracker options>
wordgen --stdout | wordmangle --stdout | cracker <cracker options>
or however it works. Here are my questions:
how does --stdout work (as far as implementation in C++)? How can I output my words? Something with cout? And --stdin? Is that some command with cin?
then speed: would this method slow my code significantly? Would I have to worry about some sort of processing overhead of using this method, or some type of bottleneck from --stdout and --stdin not being able to transfer data between the programs fast enough?
Right now I am generating about 1 billion words per second. I can encrypt and check them at the rate of ~7.6 million/sec for MD5. Would there be a problem with the word generator generating words faster than they can be tested? Or would it know to wait?
speed is essential. I would like the flexibility, but any performance it is significant.