hash_hmac
Generate a keyed hash value using the HMAC method
Description
string hash_hmac
( string $algo
, string $data
, string $key
[, bool $raw_output = false
] )
Parameters
-
algo
-
Name of selected hashing algorithm (i.e. "md5", "sha256", "haval160,4", etc..) See hash_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.
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.
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
See Also
- hash
- hash_algos
- hash_init
- hash_hmac_file