Now suppose you want to hash the string "Hello Word" with the SHA1 Function, the result is 0a4d55a8d778e5022fab701977c5d840bbc486d0. However depending on the algorithm, there is a possibility to find a collision due to the mathematical theory behind these functions. The value returned by a hash function is often called a hash, message digest, hash value, or checksum. Most of the time a hash function will produce unique output for a given input. This means if f is the hashing function, calculating f(x) is pretty fast and simple, but trying to obtain x again will take years.
Last Updated: Wednesday 29 th December 2021Ī hash function is a function that takes input of a variable length sequence of bytes and converts it to a fixed length sequence.
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