| 26 |
26 |
* limitations under the License.
|
| 27 |
27 |
*/
|
| 28 |
28 |
|
| 29 |
|
function crypt_data($val, $pass, $opt, $legacy = false) {
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|
29 |
define('PFS_OPENSSL_DEFAULT_ITERATIONS', '500000');
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|
30 |
|
|
31 |
function crypt_data($val, $pass, $opt, $legacy = false, $iterations = PFS_OPENSSL_DEFAULT_ITERATIONS) {
|
| 30 |
32 |
$file = tempnam("/tmp", "php-encrypt");
|
| 31 |
33 |
/* Ensure the files do not already exist */
|
| 32 |
34 |
unlink_if_exists($file);
|
| ... | ... | |
| 39 |
41 |
* unless we need to read old data encrypted without it. */
|
| 40 |
42 |
$keyder = ($legacy) ? "" : "-pbkdf2";
|
| 41 |
43 |
$md = ($legacy) ? "md5" : "sha256";
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|
44 |
$iter = ($legacy) ? '' : ' -iter ' . escapeshellarg($iterations);
|
| 42 |
45 |
|
| 43 |
46 |
$output = "";
|
| 44 |
47 |
$exitcode = "";
|
| 45 |
|
exec("/usr/bin/openssl enc {$opt} -aes-256-cbc -in {$file}.dec -out {$file}.enc -pass pass:" . escapeshellarg($pass) . " -salt -md ${md} {$keyder} 2> /dev/null", $output, $exitcode);
|
|
48 |
exec("/usr/bin/openssl enc {$opt} -aes-256-cbc -in {$file}.dec -out {$file}.enc -pass pass:" . escapeshellarg($pass) . " -salt -md ${md} {$keyder} {$iter} 2> /dev/null", $output, $exitcode);
|
| 46 |
49 |
|
| 47 |
50 |
if (($exitcode == 0) && file_exists("{$file}.enc") && (filesize("{$file}.enc") > 0)) {
|
| 48 |
51 |
$result = file_get_contents("{$file}.enc");
|
|
52 |
} elseif ($iterations == PFS_OPENSSL_DEFAULT_ITERATIONS) {
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|
53 |
/* If it failed with the current default iterations,
|
|
54 |
* next try with previous default number of iterations. */
|
|
55 |
$result = crypt_data($val, $pass, $opt, false, '10000');
|
| 49 |
56 |
} elseif ($legacy === false) {
|
| 50 |
57 |
/* Operation failed without new options, try old. */
|
| 51 |
58 |
$result = crypt_data($val, $pass, $opt, true);
|