尝试使用PHP / MySQL为客户端开发AES加密数据库。插入加密值是有效的,但无法返回可用的解密值。
public static function auth($username="", $password="") {
global $database;
$fields = self::$db_fields;
array_shift($fields);
$username = $database->escape_value($username);
$password = $database->escape_value($password);
$hashed_pwd = sha1($password);
$join_str = ", '" . AUTH_KEY . "'), AES_DECRYPT(";
$sql = "SELECT id, AES_DECRYPT(";
$sql .= join($join_str, $fields) . ", '" . AUTH_KEY . "') FROM " . self::$table_name. " ";
$sql .= "WHERE u_name = AES_ENCRYPT('{$username}', '" . AUTH_KEY . "') ";
$sql .= "AND u_pwd = AES_ENCRYPT('{$hashed_pwd}', '" . AUTH_KEY . "') ";
$sql .= "LIMIT 1";
使用以下查询:
$query_result = $database->query($sql);
$result_array = $database->fetch_array($query_result);
}
返回:
Array (
[0] => 5
[id] => 5
[1] => a_user_name
[AES_DECRYPT(user_name, '[PRINTS FULL AUTH KEY]')] => a_user_name
[2] => 0000hashedpasswordstring00000
[AES_DECRYPT(user_pwd, '[PRINTS FULL AUTH KEY]')] => 0000hashedpasswordstring00000
[3] => sample@email.com
[AES_DECRYPT(user_email, '[PRINTS FULL AUTH KEY]')] => sample@email.com
)
这是次要解决方案。理想情况下,查询将是面向对象的,但该方法返回的是一个包含字段但没有值的数组。
显然,在结果中传输完整的auth密钥完全违背了加密的目的。困惑于为什么它返回一个组合的关联/索引数组,而不仅仅是一个索引数组,或只是一个关联数组。是否会返回[user_email] => sample@email.com
的SQL语法更改
代替
[AES_DECRYPT(user_email, '[PRINTS FULL AUTH KEY]')] => sample@email.com
?
答案 0 :(得分:1)
您需要为包含该函数的列使用别名:
$sql = "SELECT id, AES_DECRYPT(";
$sql .= join($join_str, $fields) . ", '" . AUTH_KEY . "') AS user_email FROM " . self::$table_name. " ";
$sql .= "WHERE u_name = AES_ENCRYPT('{$username}', '" . AUTH_KEY . "') ";
$sql .= "AND u_pwd = AES_ENCRYPT('{$hashed_pwd}', '" . AUTH_KEY . "') ";
$sql .= "LIMIT 1";
来自SELECT上的MySQL文档:
可以使用AS alias_name为select_expr指定别名。别名是 用作表达式的列名,可以在GROUP BY中使用, ORDER BY或HAVING子句。例如:
SELECT CONCAT(last_name,',',first_name)AS full_name FROM mytable ORDER BY full_name;
这样的加密通常在应用程序中完成,而不是在MySQL中完成。在MySQL中完成时,密钥最终会出现在MySQL日志中。