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
Diese Funktion wurde in PHP 7.1.0 als DEPRECATED (veraltet) markiert und ist seit PHP 7.2.0 ENTFERNT.
$cipher
) : int|false$cipher
, string $mode
) : int|falseThe 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
Eine der Konstanten von MCRYPT_ciphername
oder der Name
eines Algorithmus als Zeichenkette.
mode
Eine der Konstanten von MCRYPT_MODE_modename
oder eine
der folgenden Zeichenketten: "ecb", "cbc", "cfb", "ofb", "nofb" oder "stream".
Returns the algorithm block size in bytes Im Fehlerfall wird false
zurückgegeben..
Beispiel #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.