No, because that would require MySQL to 'see' the plain text version of the password. For MySQL to do that, the proces would look something like:
PASSWORD()ed password  --->  plain text  --->  MD5ed password
The first link in that chain is mathematically impossible (even if you never saw the plain text password, it would have to get to that stage in order to be put through the MD5 algorithm).

Okay, that makes the situation very clear. I now understand that MySQL can not manipulate encrypted passwords for the purpose of changing encryption methods. While this is not very convenient for my current circumstances, I do also understand that this is for security purposes, and protects the user's privacy.

I will have to copy over the user data, inserting in some temporary passwords, and then require the users to create their own afterwards.

Thank you for your explanation. I can now make a plan to go forward with the merging of the user tables.

Dave


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