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Recent Attacks on Hash Functions and Their Impact on Hash-Based Security Schemes

<b>Speaker: Yiqun Lisa Yin - Independent Security Consultant</b><br><br>

<b>Time and Place: Monday 4/23 at 11am in LC102</b><br><br>

This talk will first provide a survey of recent attacks on hash 
functions. We will review new techniques introduced in these attacks and 
analyze some common weaknesses in the design of existing hash functions that 
made all the attacks possible. We will then consider the impact of these 
attacks on hash-based security schemes. We will present new results on 
colliding the X.509 digital certificates and key-recovery attacks on the HMAC
authentication protocol. These results show that the strength of a security 
scheme can be greatly weakened by the insecurity of the underlying hash 
function.  <a href="/news/yiqun.html">more...</a>