给apk加系统签名

# sign apk with so
java -Djava.library.path=. -jar signapk.jar platform.x509.pem platform.pk8 xxxx.apk xxxx_sign1.apk

# sign apk with no so
java -jar signapk.jar platform.x509.pem platform.pk8 xxxx.apk xxxx_sign1.apk

# print sign finger 
keytool -list -printcert -jarfile xxxx.apk