Trying to refresh 'expired' keystore
I am trying to re-sign some jars using the ant task 'signjar' however it's telling me "The signer certificate has expired."
So I tried to re-generate the keystore hoping this would 'un-expire' it...
keytool -genkey -keystore mykeystore -alias myalias
but after entering the keystore password i get: "keytool error: java.lang.Exception: Key pair not generated, alias already exists"
what am i doing wrong? do i need to delete the keystore to re-genera开发者_运维问答te it or is there a simple way to refresh it so it's not expired?
thanks.
You're mixing up the terms. A keystore contains keys, a key is something used for signing.
AFAIK, you're trying to put a new key into an old keystore using an existing alias (name). Why don't you simply used a new one? Either this or delete the old key from the keystore first. You don't need to drop the whole keystore.
Have a look at portecle, this simple tool allows you to manipulate the keystore more easily.
For this simply regenerate you certificate again follow these steps.
1)keytool -genkey -v -keystore mycertificate.keystore -alias mykey -keyalg
RSA -keysize 2048 -validity 1000
2) jarsigner -verbose -keystore mycertificate.keystore D:\app.apk mykey
3) jarsigner -verify app.apk
If it will have done then shows a message "successfully verified"
4) zipalign -v 4 D:\app.apk D:\signedapp.apk
it will generate new certificate. enjoy :)
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