Android Question Application signing with pepk.jar

[peter93]

I would like to create an application signing key with the pepk tool, but I consistently get the following error:

PS C:\> java -jar C:\B4A\pepk.jar keystore=xxxx.keystore alias=b4a output=zzzzzzzzz.keystore encryptionkey=eb10fe8f7c7c9df715022017b00c6471f8ba8170b13049a11e6c09ffe3056a104a3bbe4ac5--------------------------eb9d2a529a2092761fb833b656cd48b9de6a
Exception in thread "main" java.lang.UnsupportedClassVersionError: com/google/wireless/android/vending/developer/signing/tools/extern/export/ExportEncryptedPrivateKeyTool has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)

I can't find a solution on the forum or elsewhere. Could someone help me?

 

[agraham]

The problem is exactly what the error message says. The keytool was compiled with Java version 55 (JDK 11) and your runtime is the earlier Java 52 (JDK 8). You need to switch your runtime to JDK 11 or later.

 

[mcqueccu]

You can also use the IDE to create the Key

Tools-> Private Sign Key -> New Sign Key