java.lang.SecurityException when install apk

Question

as you know apk is a zip archive, I extracted it and replaced some resources, and zipped it again, when I install it, I get this exception

java.lang.SecurityExceptio

Answer 1

I came across this same error caused by having installed the JDK 7 instead of 6. Hope it helps some other people with this error.

Answer 2

Did you sign it after re-packing it? Changing anything in it broke the existing signature.

If the package is already installed and you re-sign the new one with a different signing key, it will also refuse to install.

Answer 3

My problem was wrong certificate alias in keystore. I changed it to "CERT" and it started to work. I used this command: keytool -changealias -alias "1" -destalias "CERT" -keystore android.jks