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

Avviso

This function has been DEPRECATED as of PHP 7.1.0 and REMOVED as of PHP 7.2.0. Relying on this function is highly discouraged.

Descrizione

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.

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

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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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