mysql传输使用password（）散列的密码

Question

I am trying to transfer a big MySQL database which hash tables with Users and their credentials

The passwords of the users which are stored in those tables are stored with the MySQL password() method. Upon transferring them to the new machine, it seems that the hashed passwords are no longer valid.

Is there any way to transfer password() encrypted fields to the new server with them working properly? Thanks

* EDIT *

I was indeed facing compatibility issues. My MySQL version was generating 16-byte hash passwords, however the new version of MySQL I installed was using the new 41-byte hashing method.

However, I've found a solution,

I've set old_passwords=1 in the my.cfg MySQL config then, the new version of mysql will use the old hashing of passwords. However, I don't recommend anyone to do this because the new hashing method of newer mysql servers is better and safer. Sadly, I cannot do this because I have more than 100 applications on the server

The best solution is provided by dlyaza above.

Answer 1

You are facing compatibility issues for MySQL password() function, please read this article in detail: 6.1.2.4 Password Hashing in MySQL .

In short, MySQL provides old_password() for compatibility when moving from old server to new server. Therefore, for new server, you could use:

SELECT old_password('test')

Procedure to fix this issue:

1. add new filed in the table as password2 or any name.
2. Use old_password() for authenticating user on new server, if the password is valid, then save a copy in the field that created at step 1.
3. once you converted all user passwords, then you can use password() normally.