August 2018
Beginner
594 pages
22h 33m
English
Content preview from Software Architect's Handbook
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Cryptographic hash functions
A hash function is a function that returns a fixed output for a given input. The input can be any size but the output is of fixed size. The output of a hash function is commonly called a hash, but it can also be referred to as a message digest, digest, hash value, or hash code. If there will be no need to know the original value prior to hashing, then hashing should be favored over encryption
Some examples of hash functions include MD5, SHA-256, and SHA-512. For example, the following is the Secure Hashing Algorithm 256 (SHA-256) hash of the string This is a message:
a826c7e389ec9f379cafdc544d7e9a4395ff7bfb58917bbebee51b3d0b1c996a
In the case of SHA-256, no matter how long the input is, the hash will be a 256-bit ...
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