The Hash Functions

Lecture Data Structures: Lesson 42 provide students with knowledge about example hash functions; collision; find something to do with the second and subsequent values that hash to this same location; solution for handling collisions; open addressing and closed hashing;...

18p hanthienngao 15-04-2022 13 2   Download

We take a critical look at the relationship between the security of cryptographic schemes in the Random Oracle Model, and the security of the schemes that result from implementing the random oracle by so called \cryptographic hash functions". The main result of this paper is a negative one: There exist signature and encryption schemes that are secure in the Random Oracle Model, but for which any implementation of the random oracle results in insecure schemes.

37p tai_lieu2014 11-04-2014 65 7   Download