[edit] Last updated: Tue, 21 May 2013

mcrypt_module_get_supported_key_sizes

(PHP 4 >= 4.0.2, PHP 5)

mcrypt_module_get_supported_key_sizes — Returns an array with the supported keysizes of the opened algorithm

Descrizione

array mcrypt_module_get_supported_key_sizes ( string $algorithm [, string $lib_dir ] )

Returns an array with the key sizes supported by the specified algorithm. If it returns an empty array then all key sizes between 1 and mcrypt_module_get_algo_key_size() are supported by the algorithm.

Elenco dei parametri

algorithm: The algorithm to be used.
lib_dir: The optional lib_dir parameter can contain the location where the algorithm module is on the system.

Valori restituiti

Vedere anche:

mcrypt_enc_get_supported_key_sizes() - Returns an array with the supported keysizes of the opened algorithm

add a note User Contributed Notes mcrypt_module_get_supported_key_sizes - [1 notes]

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Daniel Bartlett <dan at lockedbox dot net> ¶

9 years ago


A small bit of php for listing available encryption algorythms and their keysizes.



<?php

$cipher_dir = "/usr/local/lib/libmcrypt";

$algorithms = mcrypt_list_algorithms($cipher_dir);

echo "<html><head></head><body><table><tr>\n";

foreach ($algorithms as $cipher) {

        echo "<td>" . $cipher . "</td><td>";

        $ksizes = mcrypt_module_get_supported_key_sizes($cipher, $cipher_dir);

        if($ksizes==NULL) echo mcrypt_module_get_algo_key_size($cipher, $cipher_dir);

        else foreach ($ksizes as $size) {

                echo $size . " ";

        }

        echo "</td></tr>\n";

}

echo "</table></body></html>\n";

?>



I hope some one finds it handy.

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