PHP  
downloads | documentation | faq | getting help | mailing lists | reporting bugs | php.net sites | links | my php.net 
search for in the  
<mcrypt_genericmcrypt_get_cipher_name>
Last updated: Mon, 16 Jul 2012

mcrypt_get_block_size

(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.

例子 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().




<mcrypt_genericmcrypt_get_cipher_name>
 Last updated: Mon, 16 Jul 2012
 
Copyright © 2001-2005 The PHP Group
All rights reserved.
This unofficial mirror is operated at: http://manual.phpv.net/
Last updated: Thu Jul 7 19:13:47 2005 CST