Generate a keyed hash value using the HMAC method

Descrierea

hash_hmac ( string $algo , string $data , string $key [, bool $raw_output = FALSE ] ) : string

Parametri

algo: Name of selected hashing algorithm (i.e. "md5", "sha256", "haval160,4", etc..) See hash_hmac_algos() for a list of supported algorithms.
data: Message to be hashed.
key: Shared secret key used for generating the HMAC variant of the message digest.
raw_output: When set to TRUE, outputs raw binary data. FALSE outputs lowercase hexits.

Valorile întoarse

Returns a string containing the calculated message digest as lowercase hexits unless raw_output is set to true in which case the raw binary representation of the message digest is returned. Returns FALSE when algo is unknown or is a non-cryptographic hash function.

Istoricul schimbărilor

Versiune	Descriere
7.2.0	Usage of non-cryptographic hash functions (adler32, crc32, crc32b, fnv132, fnv1a32, fnv164, fnv1a64, joaat) was disabled.

Exemple

Example #1 hash_hmac() example


<?php
echo hash_hmac('ripemd160', 'The quick brown fox jumped over the lazy dog.', 'secret');
?>

Exemplul de mai sus va afișa:

b8e7ae12510bdfb1812e463a7f086122cf37e4f7

A se vedea și

hash() - Generate a hash value (message digest)
hash_hmac_algos() - Return a list of registered hashing algorithms suitable for hash_hmac
hash_init() - Initialize an incremental hashing context
hash_hmac_file() - Generate a keyed hash value using the HMAC method and the contents of a given file