![]() Cryptographic hash functions are a basic tool of modern cryptography. Ideally, the only way to find a message that produces a given hash is to attempt a brute-force search of possible inputs to see if they produce a match, or use a rainbow table of matched hashes. It is a one-way function, that is, a function for which is practically infeasible to invert or reverse the computation. This is the so-called avalanche effect.Ī cryptographic hash function ( CHF) is a mathematical algorithm that maps data of an arbitrary size (often called the "message") to a bit array of a fixed size (the "hash value", "hash", or "message digest"). A small change in the input (in the word "over") drastically changes the output (digest). A cryptographic hash function (specifically SHA-1) at work.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |