Private Sign Key Problem

Hi,

I have an App at Google play some time ago.
Now i want to publsh an update.
I have the original keystopre file but i forgot the password.

Error: error de keytool: java.io.IOException: Keystore was tampered with, or password was incorrect
java.io.IOException: Keystore was tampered with, or password was incorrect
at sun.security.provider.JavaKeyStore.engineLoad(JavaKeyStore.java:771)
at sun.security.provider.JavaKeyStore$JKS.engineLoad(JavaKeyStore.java:38)


Is there any way to recover it?

Thanks in advance for your cooperation.