Can I read Cryptanalysis of the Hash Functions MD4 and RIPEMD on EtoBox?

Cryptanalysis of the Hash Functions MD4 and RIPEMD by Xiaoyun Wang; Xuejia Lai; Dengguo Feng; Hui Chen; Xiuyuan Yu is a book available to read on EtoBox.

What is Cryptanalysis of the Hash Functions MD4 and RIPEMD about?

MD4 is a hash function developed by Rivest in 1990. It serves as the basis for most of the dedicated hash functions such as MD5, SHAx, RIPEMD, and HAVAL. In 1996, Dobbertin showed how to find collisions of MD4 with complexity equivalent to 2 20 MD4 hash computations. In this paper, we present a new attack on MD4 which can find a collision with probability 2 -2 to 2 -6 , and the complexity of finding a collision doesn't exceed 2 8 MD4 hash operations. Built upon the collision search attack, we present a chosen-message pre-image attack on MD4 with complexity below 2 8 . Furthermore, we show that for a weak message, we can find another message that produces the same hash value. The complexity is only a single MD4 computation, and a random message is a weak message with probability 2 -122 . The attack on MD4 can be directly applied to RIPEMD which has two parallel copies of MD4, and the complexity of finding a collision is about 2 18 RIPEMD hash operations.

Author

Xiaoyun Wang; Xuejia Lai; Dengguo Feng; Hui Chen; Xiuyuan Yu

Publisher

Springer Spektrum. in Springer-Verlag GmbH

Published

2005

Language

EN

ISBN

9783540259107

Subjects

Computer Science, Mathematics, Programming