password_verify_function
时间: 2023-04-26 16:05:29 浏览: 324
password_verify_function是一个密码验证函数,用于验证用户输入的密码是否与存储在数据库中的密码匹配。它通常与密码哈希函数一起使用,以确保密码的安全性。该函数可以自定义,以满足特定的安全需求。
相关问题
oracle PASSWORD_VERIFY FUNCTION
In Oracle, the PASSWORD_VERIFY_FUNCTION is a built-in function that allows you to enforce password complexity rules and policies when creating or altering user passwords. It helps to ensure that passwords meet certain requirements and enhances the security of the Oracle database.
By default, Oracle provides a default password verification function called "ORA12C_STRONG_VERIFY_FUNCTION". This function enforces the following password complexity rules:
1. The password must be at least 8 characters long.
2. It must contain at least one uppercase letter.
3. It must contain at least one lowercase letter.
4. It must contain at least one numeric digit.
5. It must contain at least one special character (e.g., !@#$%^&*).
You can view the details of this default password verification function by querying the DBA_USERS view:
```sql
SELECT * FROM DBA_USERS;
```
To alter the password complexity rules or create a custom password verification function, you can use the DBMS_AUTHENTICATION package. Here's an example of how to create a custom password verification function in Oracle:
```sql
CREATE OR REPLACE FUNCTION my_password_verify_function (
username IN VARCHAR2,
password IN VARCHAR2,
old_password IN VARCHAR2
) RETURN BOOLEAN IS
-- Custom password verification logic goes here
BEGIN
-- Return TRUE if the password meets the desired criteria, otherwise FALSE
END;
/
```
Once you have created your custom password verification function, you can set it as the current password verification function using the ALTER PROFILE statement:
```sql
ALTER PROFILE my_profile LIMIT PASSWORD_VERIFY_FUNCTION my_password_verify_function;
```
This will enforce your custom password complexity rules for new passwords or when altering existing passwords for users associated with the specified profile.
Remember to adjust the logic inside your custom password_verify_function to fit your specific requirements for password complexity and security.
ora-28001: the password has ex
抱歉,这是一个Oracle数据库的错误代码,它表示密码已经过期。为了解决这个问题,您需要重置您的密码并确保在数据库中设置了正确的密码策略。您可以使用以下命令来重置密码:
ALTER USER username IDENTIFIED BY new_password;
在这里,将 "username" 替换为您的用户名,"new_password" 替换为您想要设置的新密码。如果您想设置一个强密码,可以使用以下命令:
ALTER PROFILE default LIMIT PASSWORD_LIFE_TIME 90 PASSWORD_GRACE_TIME 3 PASSWORD_LOCK_TIME 1/24 PASSWORD_REUSE_TIME 365 PASSWORD_REUSE_MAX 10 PASSWORD_VERIFY_FUNCTION ora12c_verify_function;
这将使用 "default" 配置文件来设置密码策略,并强制用户每90天更改密码,每3天给予宽限期,锁定用户账户1小时,防止在一年内重复使用旧密码,最多重复使用10次,并使用 ora12c_verify_function 函数来验证密码强度。请注意,实际的密码策略可能因组织和安全需求而有所不同。