apksigner not accepting password

Question

Up until now I had been signing my apks with the following method:

jarsigner -verbose -sigalg SHA1withRSA -digestalg SHA1 -keystore {keystore-file} {apk-file} {key

Answer 1

Wow, I didn't know you could change passwords in the keystore.

Anyway I had this exact problem and it turns out you don't need to change your password. The trick is to set options

--ks-pass stdin --key-pass stdin

This is supposedly default behavior but in my case it only worked if I specifically included these.

Execute the command, you'll be asked to enter passwords, and it works even with characters such as !.