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Website Programming in PHP / MYSQL
hash_hmac
(PHP 5 >= 5.1.2, PECL hash:1.1-1.5)
hash_hmac — Generate a keyed hash value using the HMAC method
Description
string hash_hmac
( string $algo
, string $data
, string $key
[, bool $raw_output
] )
Parameters
- algo
-
Name of selected hashing algorithm (i.e. "md5", "sha256", "haval160,4", etc..)
- 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. Default value (FALSE) outputs lowercase hexits.
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.
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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