If I have the backup of the keys from an android bitcoin wallet. How can I get the hash of the backup file (the name is like bitcoin-wallet-keys-XXXX-XX-XX)  with John the ripper?
I have a Dash backup and I think the above procedure will work on the dash wallet too as they are similar, right?

I can make a new backup with password 123 and test all the possible hash variations created with john the ripper and test which one will be correct but I decided to ask first here.
The Internet is silent about this.