PHP: mcrypt_module_get_supported_key_sizes - Manual

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mcrypt_module_is_block_algorithm_mode mcrypt_module_get_algo_key_size

Last updated: Fri, 26 Jan 2007

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# 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

## Description

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. The optional `lib_dir` parameter can contain the location where the mode module is on the system.

See also mcrypt_enc_get_supported_key_sizes() which is used on open encryption modules.

add a note User Contributed Notes
mcrypt_module_get_supported_key_sizes
Daniel Bartlett <dan at lockedbox dot net>
11-Feb-2004 10:50
`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.`
add a note
mcrypt_module_is_block_algorithm_mode mcrypt_module_get_algo_key_size

Last updated: Fri, 26 Jan 2007
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