update : 2015.11.03
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Gets the block size of the specified cipher

mcrypt_get_block_size

(PHP 4, PHP 5)

mcrypt_get_block_sizeGets the block size of the specified cipher

설명

int mcrypt_get_block_size ( int $cipher )
int mcrypt_get_block_size ( string $cipher , string $mode )

The first prototype is when linked against libmcrypt 2.2.x, the second when linked against libmcrypt 2.4.x or 2.5.x.

mcrypt_get_block_size() is used to get the size of a block of the specified cipher (in combination with an encryption mode).

It is more useful to use the mcrypt_enc_get_block_size() function as this uses the resource returned by mcrypt_module_open().

인수

cipher

MCRYPT_ciphername 상수 중 하나이거나, 알고리즘 이름 문자열.

mode

MCRYPT_MODE_modename 상수 중 하나이거나, 다음 문자열 중 하나: "ecb", "cbc", "cfb", "ofb", "nofb" or "stream".

반환값

Gets the block size, as an integer.

예제

Example #1 mcrypt_get_block_size() example

This example shows how to use this function when linked against libmcrypt 2.4.x and 2.5.x.

<?php

echo mcrypt_get_block_size('tripledes''ecb'); // 8

?>

참고