[转载]Tunnels in Hash Functions：MD5 Collisions Within a Minute
信息来源：[url]http://cryptography.hyperlink.cz/[/url]In this paper we introduce a new idea of tunneling of hash functions. In some sense tunnels replace multi-message modification methods and exponentially accelerate collision search. We describe several tunnels in hash function MD5. Using it we find a MD5 collision roughly in one minute on a standard notebook PC (Intel Pentium, 1.6 GHz). The method works for any initializing value. Tunneling is a general idea, which can be used for finding collisions of other hash functions, such as SHA-1, 2. We show several capabilities of tunnels. A program, which source code is available on a project homepage, experimentally verified the method.
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