ConFoo 2025

mcrypt_module_get_supported_key_sizes

(PHP 4 >= 4.0.2, PHP 5, PHP 7 < 7.2.0, PECL mcrypt >= 1.0.0)

mcrypt_module_get_supported_key_sizesReturns an array with the supported keysizes of the opened algorithm

Warnung

Diese Funktion wurde in PHP 7.1.0 als DEPRECATED (veraltet) markiert und wurde in PHP 7.2.0 ENTFERNT. Von der Verwendung dieser Funktion wird dringend abgeraten.

Beschreibung

mcrypt_module_get_supported_key_sizes(string $algorithm, string $lib_dir = ?): array

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.

Parameter-Liste

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.

Rückgabewerte

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.

Siehe auch

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User Contributed Notes 1 note

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Daniel Bartlett <dan at lockedbox dot net>
20 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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