are function families that cannot be distinguished from a family oftrulyrandom functions by an efficient distinguisher given an oracle access to a random member of the family. PRFs have an extremely important role in cryptography, allowing parties who share a common secret key to send secure messa...
168 H. Wee An encryption scheme is said to be F-KDM secure if there exists an effi- cient kdmEnc∗() such that for all PPT A, the advantage |AdvKDMA,F (k)| is a negligible function in k. Construction. Starting with a projective hash function Λhk : G → K, we may derive ...
Challenge.UniverseUcanbeextremelylargesodefininganarrayofsize|U|isinfeasible.Applications.Filesystems,databases,Google,compilers,checksumsP2Pnetworks,associativearrays,cryptography,webcaching,etc.2 Hashing Hashfunction.h:U{0,1,…,n-1}.Hashing.CreateanarrayHofsizen.Whenprocessingelementu,...
Quisquater, Pre-images for the Tillich-Z´emor hash function, Proceedings of the International Workshop on Selected Ar- eas in Cryptography, pp. 282–301, 2010. [18] V. Roussev, Data fingerprinting with similarity digests, in Advances in Digital Forensics VI, K. Chow and S. Shenoi (...
Hash functions are used in cryptography, databases [18] and for file identification [2]. In addition to traditional hash func- tions such as FNV [14], cryptographic hash functions such as SHA-1 [12] and MD5 [15], there are also similarity preserving hash methods such as ssdeep [9], ...