lost password for backup encrypt

Then you cannot use it...

See >

iTunes and encrypted backups

From Here > http://support.apple.com/kb/HT4946

i lost the password wat do i do

i tried thousands of times but with no use

I have the same problem but the funny thing is, I restored a backup not that long ago and managed input the correct password but now it's not working. I've restored an old backup and the password works but I have defitiely not changed it.