“According to Stevens and de Weger, the collision attack was unlike any that cryptographers have seen before. They arrived at that conclusion after using a custom-designed forensic tool to analyze Flame components. ¶ "More interestingly, the results have shown that not our published chosen-prefix collision attack was used, but an entirely new and unknown variant," Stevens wrote in a statement distributed on Thursday. "This has led to our conclusion that the design of Flame is partly based on world-class cryptanalysis. Further research will be conducted to reconstruct the entire chosen-prefix collision attack devised for Flame." ¶ The analysis reinforces theories that researchers from Kaspersky Lab, CrySyS Lab, and Symantec published almost two weeks ago. Namely, Flame could only have been developed with the backing of a wealthy nation-state. Stevens' and de Weger's conclusion means that, in addition to a team of engineers who developed a global malware platform that escaped detection for at least two years, Flame also required world-class cryptographers who have broken new ground in their field.” - × × ×

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