Hashing is a mathematical method used in cryptography to generate a “signature” for any kind of content. The hashing function takes any form of data and converts it into a unique string of text. Even the smaller variation of the original data will produce a different hashing result, thus showing that the data have been altered or tampered with. Hashing is designed to act as a one-way function — you can provide any data into a hashing algorithm and get a unique string, but you cannot do the opposite. It is almost impossible to figure out the original data starting from the hashing result.