I have many encrypted files that I do not know the password to. The passwords are in an encrypted keychain that I do know the password to. If I delete the keych

I have many encrypted files that I do not know the password to. The passwords are in an encrypted keychain that I do know the password to. If I delete the keychain, there is no way that I will be able to decrypt those files. What would happen if the courts ordered me to decrypt a file where I no longer have access to the password?