![]() ![]() However, an un-hashing algorithm would be " P" and intractable to solve - meaning that it cannot be computed in a reasonable time using standard computers.Įven though the algorithm itself is not feasibly reversible, that doesn't mean that cracking the hashes is impossible. This ties back to a fundamental mathematical problem known as the P vs NP relationshipĪbstractly, this means that the algorithm to hash the value will be " NP" and can therefore be calculated reasonably. Hashing algorithms are designed so that they only operate one way which means a calculated hash cannot be reversed using just the output given. If we were to take the word " polo" - a string of 4 characters and run it through an MD5 hashing algorithm, we end up with an output of b53759f3ce692de7aff1b5779d3964da - a standard 32 character MD5 hash. There are many popular hashing algorithms, such as MD4, MD5, SHA1 and NTLM. ![]() This masks the original value of the data and is done by running the original data through a hashing algorithm. A hash is a way of taking a piece of data of any length and representing it in another form that is a fixed length.
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