Sciweavers

CRYPTO
2008
Springer
92views Cryptology» more  CRYPTO 2008»
14 years 1 months ago
Compression from Collisions, or Why CRHF Combiners Have a Long Output
A black-box combiner for collision resistant hash functions (CRHF) is a construction which given black-box access to two hash functions is collision resistant if at least one of th...
Krzysztof Pietrzak
CRYPTO
2006
Springer
88views Cryptology» more  CRYPTO 2006»
14 years 3 months ago
On the Impossibility of Efficiently Combining Collision Resistant Hash Functions
Let H1, H2 be two hash functions. We wish to construct a new hash function H that is collision resistant if at least one of H1 or H2 is collision resistant. Concatenating the outpu...
Dan Boneh, Xavier Boyen