Collision AttackCollision Resistance; Hash Functions A collision attack finds two identical values among elements that are chosen according to some distribution on a finite set S. In cryptography, one typically...doi:10.1007/978-1-4419-5906-5_564Preneel, Bart...
We give two attack strategies for searching collisions in sponge-based hash functions. Following one strategy, we give two non-practical collision attacks: a 6-round collision attack on Gimli-Hash with time complexity 2 and a 2-round collision attack on Ascon-Hash with time complexity 2. ...
One method of breaking a cipher is through cryptanalysis; finding a weakness in the cipher that can be exploited with a complexity less thanbrute force. The SHA-1 collision attack requires significant computational resources, but it is still 100,000 times faster than a brute-force effort...
Selected Areas in Cryptography-SAC 2013, volume 8282 of LNCS, pp. 553-570. Springer, Berlin (2014)A. Bauer, E. Jaulmes, E. Prouff, and J. Wild. Horizontal collision correlation attack on elliptic curves. In Selected Areas in Cryptology, Lecture Notes in Computer Science, pages -. ...
Meet-in-the-middle attacksIn a meet-in-the-middle attack, Group A is typically some pre-calculated set of encrypted blocks, and Group B is a set of "real" encrypted blocks. The idea is to use the pre-calculated set of blocks to try and find at least one "real" encrypted block ...
Now I will probably take your money. This is called a ‘meet-in-the-middle‘ attack in cryptography and basically it says that you get a 50% collision probability at half the hash length. So the SQL %%lockres%% hash will produce two records with same hash, with a 50% probability, out...
“Our freestart collision attack can be done in about 9 to 10 days on a cluster with 64 GPUs, or by renting GPU time on Amazon EC2 for about 2K US$. Based on experimental data obtained in this new work and the 2013 state-of-the-art collision attack, we can project that a real SH...
Another example, albeit a narrowly-focused one, is the hash collision attack. The hashes addressed here are the kind used in computer science to form the basics of data structures or otherwise non-cryptographic uses. (It’s still possible to misapply cryptographic hashes like SHA-1; check ...
This paper describes several novel timing attacks against the common table-driven software implementation of the AES cipher. We define a general attack strategy using a simplified model of the cache to predict timing variation due to cache-collisions in the sequence of lookups performed by the...
For an inverted form of ECOH, the generalized ECOH with parameter value ε=1 can thwart the most plausible collision finding attack on ECOH.The ECOH can also provide an incremental mode of operation. If one has compute the ECOH hash H of a message M, and then a small change is made...