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July 2012
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Archive for July, 2012

Chapcrack and CloudCracker

Some of the biggest news that came out of DEFCON 20 was coverage of Moxie Marlinspike’s latest evisceration of MS-CHAPv2. There are papers dating back to 1999 describing weaknesses in MS-CHAPv2, Microsoft’s “updated” version of their original challenge/response system for authentication. The scheme’s weakness described briefly: a Server sends a Client a 16 byte challenge, […]