hash_hmac Generate a keyed hash value using the HMAC method

hash_hmac

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

hash_hmac — Generate a keyed hash value using the HMAC method

说明

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

参数

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.

返回值

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.

范例

Example #1 hash_hmac() example


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

以上例程会输出：

b8e7ae12510bdfb1812e463a7f086122cf37e4f7

参见

hash() - Generate a hash value (message digest)
hash_algos() - Return a list of registered hashing algorithms
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

« hash_final
» hash_hmac_file

PHP教程

PHP简介 PHP基本语法 PHP类型 PHP变量 PHP运算符 PHP控制结构 PHP函数 PHP类与对象 PHP异常处理函数库分类

PHPHash - 函数

hash_update_stream