How to verify that app was signed by my certificate?

Question

How do I check if the signature of my app matches the signature of the certificate that I used to sign it?

This is how I should be able to get the certificates fingerpri

Answer 1

the code below:

 c.getPublicKey().getEncoded()

it should be like this

 c.getEncoded()

i think md5 check by keytool is check the certfile,not the publickey