hash function is applied to the message and key to produce a short, fixed-length hash value, and this hash value is then xor’ed with a key-derived pseudorandom pad

recommender system works as follows: users profiles are rep- resented as a pseudo clique, this pseudo-clique is encoded as a graph, whose nodes are hashed using an original

The to-date fastest SHA-256 software for an 8-bit processor was introduced by Osvik in [19] and reaches an execution time of 21440 cycles for the compression function alone,

KEYWORDS : NP-complete, One-way function, Matrix of zeros and ones, Three-dimensional contin- gency table, Collision-resistant hash

b) main(): This is the main function of the implementa- tion, first checking the passed parameters, selecting the RFSB variant to be used, calculating the A matrix, calculating the

L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des

The saHash algorithm uses k independent sub-hash functions, also called “statistical approaches.” Each sub-hash function produces its own hash value; the final fingerprint is created

We show that this very rich structure can be used to build a highly efficient attack: with most parameters, our collision attack is faster than the compression function.. Key

As stated in the beginning, the real purpose of these notes is not to simply repeat the standard calculation of the derivative of the logarithm function, but to replace the