To store username and passwords safely in MySQL database, we can use MD5().
Let us see an example. First, we will create a table. The CREATE command is used to create a table.
mysql> create table UserNameAndPasswordDemo - > ( - > U_Id int(10) unsigned NOT NULL AUTO_INCREMENT, - > UserId varchar(255) DEFAULT NULL, - > UserPassword varchar(255) DEFAULT NULL, - > primary key(U_Id), - > UNIQUE KEY `UserId` (`UserId`) - > ); Query OK, 0 rows affected (0.61 sec)
Inserting records and safely storing passwords with the help of MD5().
mysql> INSERT INTO UserNameAndPasswordDemo(UserId, UserPassword) VALUES ('[email protected]', MD5('john123'));
Query OK, 1 row affected (0.17 sec)
mysql> INSERT INTO UserNameAndPasswordDemo(UserId, UserPassword) VALUES (MD5('[email protected]'), MD5('123Carol'));
Query OK, 1 row affected (0.14 sec)Now, we will implement the SELECT statement to display the records, including password in MD5. Here, we are only displaying records for UserId '[email protected]'.
mysql> SELECT *from UserNameAndPasswordDemo where UserId='[email protected]';
The following is the output.
+------+-------------+----------------------------------+ | U_Id | UserId | UserPassword | +------+-------------+----------------------------------+ | 1 | [email protected] | 6e0b7076126a29d5dfcbd54835387b7b | +------+-------------+----------------------------------+ 1 row in set (0.00 sec)
To display all records.
mysql> SELECT *from UserNameAndPasswordDemo;
The following is the output wherein we have saved username and password using MD5 −
+------+----------------------------------+----------------------------------+ | U_Id | UserId | UserPassword | +------+----------------------------------+----------------------------------+ | 1 | [email protected] | 6e0b7076126a29d5dfcbd54835387b7b | | 2 | 5f565a3d794f85e5db4f3bb7b5811a25 | f1d2fb85f7d6ce7428b9b3fd569be42b | +------+----------------------------------+----------------------------------+ 2 rows in set (0.00 sec)