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<?php /** * crypt-test-salt-nul-bytes.php */ $saltLen = 16; $prefix = '$5$'; $length = 63; $plain = 'hello'; $salt = str_repeat("\0", $saltLen); $salt[15] = '.'; $salt[0] = '.'; $salt = ""; $result = crypt($plain, $prefix . $salt); var_dump($result); echo strlen($result) !== $length ? 'FAIL' : 'OK';
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.2 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(47) "$5$$TCRu/ts4Npu8OJyeWy2WnUHCe/6bKVMSi0sROUrPh48" FAIL
Output for 5.3.0 - 5.3.1
string(13) "$5Ig8j7SOu7.6" FAIL
preferences:
315.66 ms | 401 KiB | 389 Q