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# LVII. Mhash Functions

# 소개

These functions are intended to work with mhash. Mhash can be used to create checksums, message digests, message authentication codes, and more.

This is an interface to the mhash library. mhash supports a wide variety of hash algorithms such as MD5, SHA1, GOST, and many others. For a complete list of supported hashes, refer to the documentation of mhash. The general rule is that you can access the hash algorithm from PHP with MHASH_HASHNAME. For example, to access TIGER you use the PHP constant MHASH_TIGER.

# 요구 사항

To use it, download the mhash distribution from its web site and follow the included installation instructions.

# 설치

You need to compile PHP with the `--with-mhash[=DIR]` parameter to enable this extension. DIR is the mhash install directory.

# 런타임 설정

이 확장 모듈은 `php.ini` 설정이 존재하지 않습니다.

# 리소스 종류

이 확장 모듈은 리소스형을 정의하지 않습니다.

# 상수 정의

이 확장 모듈은 다음의 상수를 정의합니다. 이는 확장 모듈을 PHP에 내장했거나, 실행시에 동적으로 읽어들일 경우에만 사용할 수 있습니다.

Here is a list of hashes which are currently supported by mhash. If a hash is not listed here, but is listed by mhash as supported, you can safely assume that this documentation is outdated.

- `MHASH_MD5`

- `MHASH_SHA1`

- `MHASH_HAVAL256`

- `MHASH_HAVAL192`

- `MHASH_HAVAL160`

- `MHASH_HAVAL128`

- `MHASH_RIPEMD160`

- `MHASH_GOST`

- `MHASH_TIGER`

- `MHASH_CRC32`

- `MHASH_CRC32B`

# 예제

예 1. Compute the MD5 digest and hmac and print it out as hex

`<?php $input = "what do ya want for nothing?"; $hash = mhash(MHASH_MD5, $input); echo "The hash is " . bin2hex($hash) . "<br />\n"; $hash = mhash(MHASH_MD5, $input, "Jefe"); echo "The hmac is " . bin2hex($hash) . "<br />\n"; ?>`

This will produce:

    The hash is d03cb659cbf9192dcd066272249f8412
    The hmac is 750c783e6ab0b503eaa86e310a5db738

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