(PHP 3>= 3.0.8, PHP 4 , PHP 5)
mcrypt_get_block_size -- Get the block size of the specified cipher
Description
int
mcrypt_get_block_size ( int cipher)
int
mcrypt_get_block_size ( string cipher, string module)
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().
This example shows how to use this function when linked against libmcrypt
2.4.x and 2.5.x.
Example 1. mcrypt_get_block_size() example |
<?php
echo mcrypt_get_block_size('tripledes', 'ecb');
?>
Prints:
8
|
|
See also: mcrypt_get_key_size(),
mcrypt_enc_get_block_size() and
mcrypt_encrypt().
