02-03-2016, 03:29 AM
1. Yes, ecryptfs is very slow -- but so is your GPU. A good modern GPU will be more than twice as fast as that. GTX 970 for example achieves ~ 6500 H/s on ecryptfs, while a Titan X achieves ~ 10000 H/s.
2. Yes, you can and should do both. Password cracking is an embarrassingly parallel problem, and thus scales linearly (so eight GPUs will be eight times as fast as one GPU.) You have to have the right GPU as well, as mentioned in #1 your current GPU is woefully underpowered. But even if you had e.g. 8x Titan X, brute force would still be out of the question, so you need to reduce your search space. Highly-targeted wordlists are pretty much your only hope.
2. Yes, you can and should do both. Password cracking is an embarrassingly parallel problem, and thus scales linearly (so eight GPUs will be eight times as fast as one GPU.) You have to have the right GPU as well, as mentioned in #1 your current GPU is woefully underpowered. But even if you had e.g. 8x Titan X, brute force would still be out of the question, so you need to reduce your search space. Highly-targeted wordlists are pretty much your only hope.