最近在coursera上学习数据结构,学到哈希表这块对于universal family这块的描述实在是理解不了。 ppt上相关内容如下: Universal Family Definition: Let U be the universe the set of all possible keys. A set of hash functions ℋ = {h : U →{0,1,2,...,m−1}} is called a universal family if...
Then via connecting the universal hashing problem to the number of solutions of restricted linear congruences, we prove that the family GRDH is an -almost--universal family of hash functions for some if and only if is odd and . Furthermore, if these conditions are s...
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inth(Strings,intn){inthash=0;for(inti=0;i
The strongest well-known measure for the quality of a universal hash-function family H is its being ε-strongly universal, which measures, for randomly chosen h∈H, one's inability to guess h(m′) even if h(m) is known for some m≠m′. We give example applications in which this meas...
4. A shared-key generation system that includes the universal-hash-function-family calculation devices according to any one of claims 1 to 3 each in a transmitting device and in a receiving device and generates a shared key shared between the transmitting device and the receiving device, said ...
VHMAC基于泛hash函数族的合成。 For efficiently processing a vector of strings,a parallel universal hash family was defined,its output was then put into another u...
beamsplitter is a family of hash functions parameterized by a random s-box. This repo includes a simple CLI app for hashing files or stdin from the command line. Aim 1 ✅ Build a hash that mostly depends on an s-box. Aim 2 ❔ Any random set of 8192 bytes can, with usefully high...
Vortex: A New Family of One-Way Hash Functions Based on AES Rounds and Carry-Less Multiplication We present Vortex a new family of one way hash functions that can produce message digests of 256 bits. The main idea behind the design of these hash functions is that we use well known algori...
The power of primes: security of authentication based on a universal hash-function family Message authentication codes (MACs) based on universal hash-function families are becoming increasingly popular due to their fast implementation. In this p... B Alomair,A Clark,R Poovendran - 《Journal of ...