Passwords

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Change to hacker “safe” password

August 20, 2010 in Security | No comments

According to this article, is a 7 characters passwords pretty hopeless nowadays, because of the GPU-power that the regular consumer graphic cards got. Instead does the article recommends you to change to a longer password, with at least 12 characters. Then I can feel a bit safe, with my 15 characters password. :)

I wonder when we will need to have full sentences as passwords due to the increasing power in our machines.

Just so you don’t get me or the article wrong. It’s only “safe” with a 12+ characters password as long as the hacker doesn’t have access to the database, with the password stored in it in plain text. Then is it only helpful with a long password if it’s hashed and/or salted.

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Crack hashes with IGHASHGPU

June 12, 2010 in Applications, Security | No comments

I found a very nice and fast software for cracking hashes, like sha1 and md5. It went through almost 1000 million hashes per second on my computer, compared with Cain which did about 6,5 millions per second. But I have only a half broken ATI 4870. This is what the website says about 5970:

Recovery speed on ATI HD 5970 peaks at 5600M/s MD5 hashes and 2300M/s SHA1 hashes.

And that is freaking awesome!

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Decrypt passwords with Cain & Abel

June 10, 2010 in Applications, Security | No comments

I have used Cain & Abel before (some years ago) for network sniffing. But today, when I wanted to try out decrypting passwords, I googled and found out that Cain & Abel can do that too. Or maybe I shouldn’t call it decrypting, because I was solving hashes. It worked great, but it takes a huge amount of time when it’s more than 6-7 characters in the password. Therefore can it be a good idea to download a rainbow table if you want to minimize the time spent “decrypting”.

http://www.oxid.it/cain.html

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