mcrypt_get_block_size

Gets the block size of the specified cipher

 **mcrypt_get_block_size** int $cipher

 **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.

is used to get the

size of a block of the specified (in combination with an encryption mode). mcrypt_get_block_size``cipher

It is more useful to use the function as this uses the resource returned by . mcrypt_enc_get_block_size``mcrypt_module_open

cipher``modeReturns the algorithm block size in bytes return.falseforfailure.

Voorbeeld: 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

?>

mcrypt_get_key_size``mcrypt_enc_get_block_size``mcrypt_encrypt

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