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Rechercher une fonction PHP

hash_hmac

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(PHP 5 >= 5.1.2, PHP 7, PECL hash >= 1.1)

hash_hmac — Generate a keyed hash value using the HMAC method

Description

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

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Parameters

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.

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Return Values

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.

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Changelog

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

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Examples

Example #1 hash_hmac() example

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

The above example will output:

b8e7ae12510bdfb1812e463a7f086122cf37e4f7

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See Also

  • 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

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Document created the 30/01/2003, last modified the 26/10/2018
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References

  1. View the html document Language of the document:fr Manuel PHP : http://php.net

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