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.
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
Warning
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.
Description
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.
Parameters
-
algorithm -
The algorithm to be used.
-
lib_dir -
The optional
lib_dirparameter can contain the location where the algorithm module is on the system.
Return Values
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.
See Also
- mcrypt_enc_get_supported_key_sizes() - Returns an array with the supported keysizes of the opened algorithm
add a note
User Contributed Notes 1 note
Daniel Bartlett <dan at lockedbox dot net> ¶
20 years ago
