35、MySQL-加密函数

MySQL中可以通过以下两种方式加密:

MD5()

PASSWORD()

1、MD5加密可以得到32位加密结果

mysql> SELECT MD5('张三');

+----------------------------------+

| MD5('张三') |

+----------------------------------+

| 615db57aa314529aaa0fbe95b3e95bd3 |

+----------------------------------+

mysql> SELECT LENGTH(MD5('张三'));

+-----------------------+

| LENGTH(MD5('张三')) |

+-----------------------+

| 32 |

+-----------------------+

2、PASSWORD加密一般用于对用户密码加密

mysql> SELECT PASSWORD('张三');

+-------------------------------------------+

| PASSWORD('张三') |

+-------------------------------------------+

| *20AE7F426AD9000FA2F167D2CA9874E664502AED |

+-------------------------------------------+

1 row in set (0.01 sec)

mysql> SELECT LENGTH(PASSWORD('张三'));

+----------------------------+

| LENGTH(PASSWORD('张三')) |

+----------------------------+

| 41 |

+----------------------------+