How can I export private key from gateway.jks

[#1]

I would like to get the private key from gateway.jks and tried the following command on my test cluster:

keytool -importkeystore -srckeystore ./gateway.jks -destkeystore gateway.jks -srcstoretype JKS -deststoretype PKCS12 -srcstorepass hadoop -srckeypass hadoop -deststorepass changeit -destkeypass changeit

Then getting error:

keytool error: java.io.IOException: DerInputStream.getLength(): lengthTag=109, too big.

Does anyone know how to fix/workaround above error?

[#2]

yes, it was my stupid typo. Thanks!

[#3]

@Hajime

Seems like your keystore file is not valid. Are you able to do -list operation on that file? if the keystore file is not sensitive you can attach it here, can validate the file