mcrypt_get_block_size - Gets the block size of the specified cipher
Вернуться к: Mcrypt
mcrypt_get_block_size
(PHP 4, PHP 5, PHP 7)
mcrypt_get_block_size — Gets the block size of the specified cipher
Описание
$cipher
)$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().
Список параметров
-
cipher -
Одна из констант
MCRYPT_ciphernameили название алгоритма в виде строки. -
mode -
Одна из констант
MCRYPT_MODE_modename, либо одна из следующих строк: "ecb", "cbc", "cfb", "ofb", "nofb" и "stream".
Возвращаемые значения
Gets the block size, as an integer.
Примеры
Пример #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
?>
Смотрите также
- mcrypt_get_key_size() - Gets the key size of the specified cipher
- mcrypt_enc_get_block_size() - Returns the blocksize of the opened algorithm
- mcrypt_encrypt() - Encrypts plaintext with given parameters
Вернуться к: Mcrypt