Keep security setting when extracting files

I have a 45 pages pdf that I need to extract into 45 different pages and then save each file with a password. Is there a possibility to give the 45 pages file a password and when extracting the 45 pages, each pdf keeps the password ? Right now when I press extract I get the message: Pages extracted from a secure file will loose their security settings. Is it ok to continue ?

I do not want to add 45 times a password, is there a better solution to secure each file ? 

Thanks for your help.

Regards,

Mel