Handbook of Applied Cryptography
Handbook of Applied Cryptography
The Design of Rijndael
Fast Hashing and Stream Encryption with PANAMA
FSE '98 Proceedings of the 5th International Workshop on Fast Software Encryption
ASIACRYPT'07 Proceedings of the Advances in Crypotology 13th international conference on Theory and application of cryptology and information security
On the indifferentiability of the sponge construction
EUROCRYPT'08 Proceedings of the theory and applications of cryptographic techniques 27th annual international conference on Advances in cryptology
Producing collisions for PANAMA, instantaneously
FSE'07 Proceedings of the 14th international conference on Fast Software Encryption
FSE'07 Proceedings of the 14th international conference on Fast Software Encryption
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We investigate the security of the hash function design called RadioGatún in a recently proposed framework of sponge functions. We show that previously introduced symmetric trails can hardly be used to construct collisions and to find a second preimage efficiently. As a generalization of truncated differentials, trails with linear and non-linear restrictions on differences are proposed. We use these trails to find semi-free-start collisions and second preimages with the meet-in-the middle approach and the complexity in the gap between claimed security level and the birthday bound. We also provide some observations on lower bounds on the complexity of our methods with respect to the length of the trail used. This is the best attack on RadioGatún .