Recomendados
Recomendados
Mais conteúdo relacionado
Último
Último (20)
Destaque
Destaque (20)
Double-Purpose Graphic Cards: Password Audit Goes Greener And Faster (Andrey Belenko, Elcomsoft)
- 1. Graphic Cards: Password Recovery goes Faster and Greener
- 2. Who may need Password Recovery? Ordinary users (own passwords) IT Departments (employee’s passwords) Security auditors, consultants and penetration testers Law enforcement & government Hackers usually don’t!
- 3. Why speed counts? Users and IT Departments: «We needed those passwords yesterday» Auditors, consultants and pentesters: «Time is Money»
- 4. How to increase speed? Traditional way is to network together many computers to form a cluster • Communication overhead • Difficult to manage • Not power-efficient
- 8. Yes! For many HPC applications GPUs are many times faster than CPUs But they’re not only faster, they are greener!
- 9. Why?
- 10. CPUs are designed to be efficient at serial computing… …while GPU’s main concern is parallel computing
- 11. Intel® Core™ i7-965 “The highest performing desktop processor on the planet.” 4 cores 3,2 GHz 731 million transistors 263 mm2
- 12. Memory Controller IO IO Q Core Core Core Core u e u e QPI QPI L3 cache 8 Мb >384 million transistors
- 13. Out-of- Memory Controller Order Execution Units Scheduling & Retirement IO IO Q Ordering & Execution u Instruction Core Core Core Core Memory L1 e Decode & Data Microcode u e Branch Prediction Inst Fetch & L1 QPI QPI Paging L3 cache L2 8 Мb >384 million transistors
- 14. Memory Controller IO IO Q Core Core Core Core u e u e QPI QPI L3 cache 8 Мb >384 million transistors
- 15. CPU dedicates only about 10% to the execution units! 1/10
- 16. CPU dedicates only about 10% to the execution units!
- 17. NVIDIA® GeForce® GTX 285 240 cores 1.476 GHz 1.4 billion transistors 470 mm2
- 18. PCIe & TPC TPC TPC Memory TPC TPC Controller Thread ROP Setup ROP Dispatch Memory TPC TPC TPC TPC TPC Controller
- 19. PCIe & Multiprocessor Multiprocessor Multiprocessor TPC TPC TPC Memory TPC TPC Controller Thread ROP Setup ROP Dispatch Texture Memory Fetch & TPC TPC TPC TPC TPC Controller Other
- 20. PCIe & TPC TPC TPC Memory TPC TPC Controller Thread ROP Setup ROP Dispatch Memory TPC TPC TPC TPC TPC Controller
- 21. GPU dedicates about 30% to the execution units! 1/3
- 22. GPU dedicates 6 times as many resources to the execution units as CPU! 183 Watts 6x130=780 Watts full load full load
- 23. Performance 680 250 LM 195 32 S1070 GTX 295 2 600 1 330 NTLM GTX 285 795 87 Q6600 1 920 920 MD5 570 70 0 1 000 2 000 3 000 Millions passwords per second
- 24. Performance per $ 85 521 LM 557 S1070 178 GTX 295 325 2 771 NTLM GTX 285 2 271 483 Q6600 240 1 917 MD5 1 629 389 0 500 1 000 1 500 2 000 2 500 3 000 Thousands passwords per $ per second
- 25. Are passwords broken? No, but it is good time to review password policy!
- 26. • Use password manager • Don’t use pronounceable word as password • Use random set of (at least) lowercase and uppercase letters and digits as password • Windows: use passwords of at least 10 characters long • Change your passwords regularly • Review password policy regularly
- 27. Performance per Watt 850 865 LM 1 066 305 S1070 GTX 295 3 250 4 602 NTLM GTX 285 4 344 829 Q6600 2 400 3 183 MD5 3 115 667 0 1 000 2 000 3 000 4 000 5 000 Thousands passwords per watt per second
- 28. Greener Computing • Consider a cluster of 25 dual-CPU quad-core computers • 400 watts full load each • 10’000 watts total
- 29. Greener Computing • Two Tesla S1070 provide same performance • 800 watts full load each • One computer for management • 2’000 watts total
- 32. Greener Computing • 8’000 watts saved • 49’090 kWh a year (at 70% utilization) • £3’436 savings on electricity a year (at 7p per kWh average rate) • Prevents 27’500 kg CO2 emission • Takes 5 cars off the road • Saves 2’300 trees/year
- 33. Thank You! Andrey Belenko a.belenko@elcomsoft.com