You should explain that the block size is return in BYTES, not the more commonly used unit, bits. Many readers are not going to know the DES block size and figure this out on their own.
(PHP 4, PHP 5, PHP 7 < 7.2.0, PECL mcrypt >= 1.0.0)
mcrypt_get_block_size — Gets the block size of the specified cipher
Ta funkcja jest PRZESTARZAŁA od PHP 7.1.0. Używanie tej funkcji nie jest zalecane.
$cipher
) : int$cipher
, string $mode
) : intThe 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().
cipher
Jedna ze stałych MCRYPT_szyfr
, lub nazwa algorytmu jako ciąg znaków.
mode
Jedna ze stałych MCRYPT_MODE_nazwatrybu
, lub jeden z następujących ciągów znaków: "ecb", "cbc", "cfb", "ofb", "nofb" lub "stream".
Returns the algorithm block size in bytes lub FALSE
w przypadku niepowodzenia.
Przykład #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
?>
You should explain that the block size is return in BYTES, not the more commonly used unit, bits. Many readers are not going to know the DES block size and figure this out on their own.