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The symbol # is known variously in English-speaking regions as the number sign, [1] hash, [2] or pound sign. [3] The symbol has historically been used for a wide range of purposes including the designation of an ordinal number and as a ligatured abbreviation for pounds avoirdupois – having been derived from the now-rare ℔ .
Hashes are often used in computer security. This article presents how data integrity, authenticated data integrity and non-repudiation can be achieved using hashes. Finally it shows how to build a one-time password system using Lamport hash chain.
Hashing is the process of converting data — text, numbers, files, or anything, really — into a fixed-length string of letters and numbers. Data is converted into these fixed-length strings, or hash values, by using a special algorithm called a hash function.
In this article, we dived deeply into the hashing topic. First, we described a hash function and a cryptographic hash function. Second, we listed a few examples of them. Then, we presented several examples of cryptographic attacks.
Hashing is the process of transforming any given key or a string of characters into another value. This is usually represented by a shorter, fixed-length value or key that represents and makes it easier to find or employ the original string. The most popular use of hashing is for setting up hash tables.
The key to understanding hash-based cryptography is knowing how these tools work and when to use them. Examples of Hash Cryptography in practice. Now that we've covered what hash cryptography is and some of the common hash functions, let's look at a couple of ways it's used in the real world.
What is password hashing? Infosec Skills author Mike Meyers explains how a hash works and demonstrates common hashing use cases.