mcrypt_get_block_size
mcrypt_get_block_size
(PHP 4, PHP 5, PHP 7)
mcrypt_get_block_size — Gets the block size of the specified cipher
This function has been DEPRECATED as of PHP 7.1.0. Relying on this function is highly discouraged.
Description
int mcrypt_get_block_size ( int $cipher )
int mcrypt_get_block_size ( string $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().
Parameters
-
cipher -
One of the
MCRYPT_ciphernameconstants, or the name of the algorithm as string. -
mode -
One of the
MCRYPT_MODE_modenameconstants, or one of the following strings: "ecb", "cbc", "cfb", "ofb", "nofb" or "stream".
Return Values
Gets the block size, as an integer.
Examples
Example #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
?> See Also
- 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
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://secure.php.net/manual/en/function.mcrypt-get-block-size.php
