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Security

Submission + - Cracking Passwords with Amazon EC2 GPU Instances (stacksmashing.net) 1

suraj.sun writes: As of Nov-15, 2010, Amazon EC2 is providing what they call "Cluster GPU Instances": An instance in the Amazon cloud that provides you with the power of two NVIDIA Tesla “Fermi” M2050 GPUs. The exact specifications look like this:

        22 GB of memory
        33.5 EC2 Compute Units (2 x Intel Xeon X5570, quad-core “Nehalem” architecture)
        2 x NVIDIA Tesla “Fermi” M2050 GPUs
        1690 GB of instance storage
        64-bit platform
        I/O Performance: Very High (10 Gigabit Ethernet)
        API name: cg1.4xlarge

GPUs are known to be the best hardware accelerator for cracking passwords, so I decided to give it a try: How fast can this instance type be used to crack SHA1 hashes?

Using the CUDA-Multiforce, I was able to crack all hashes from this file with a password length from 1-6 in only 49 Minutes (1 hour costs 2.10$ by the way.). This just shows one more time that SHA1 is deprecated — You really don't want to use it anymore!

StackSmashing: http://stacksmashing.net/2010/11/15/cracking-in-the-cloud-amazons-new-ec2-gpu-instances/

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Cracking Passwords with Amazon EC2 GPU Instances

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