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Hashing is a technique that is widely used in computer science for various applications such as data compression, indexing, and cryptography. Cryptographic hash functions are a special type of hash function that are designed to be irreversible, meaning that it is difficult or impossible to recover the original input from the hash output. Password hashing is one of the primary applications of cryptographic hash functions. |
A cryptographic hash function takes an input message of arbitrary length and produces a fixed-length output, known as a hash value or message digest. The hash value is typically a sequence of bytes that represents the original message. A good cryptographic hash function should have the following properties:
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