mcrypt_module_get_supported_key_sizes

(PHP 4 >= 4.0.2, PHP 5, PHP 7)

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

설명

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.

인수

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.

반환값

참고

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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