What is the difference between the Java 1.6 and 1.7 jarsigner
问题 Just noted that you can´t sign Android APKs with the Java 1.7 jarsigner. So I wonder why this is and what is the difference between the 1.6 and 1.7 signer? 回答1: This is because the default digest algorithm for Java 1.7 is SHA-256 while for Java 1.6 it's SHA1withDSA . Java 1.6 Jarsigner docs Java 1.7 Jarsigner docs 回答2: Yes you CAN use 1.7! It is very tricky to find info on the usage with 1.7, but once found it is reasonable simple: For keytool include -sigalg SHA1withDSA -keyalg DSA -keysize