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import java.security.Security;
import java.util.Locale;
public class IsMD5Disabled {
public static void main(String[] args) throws Exception {
String daString = Security.getProperty("jdk.jar.disabledAlgorithms");
String[] algorithms = daString.trim().split(",");
boolean isMD5Disabled = true;
for (String alg : algorithms) {
if (alg.trim().toLowerCase(Locale.US).startsWith("md5")) {
isMD5Disabled = false;
}
}
if (isMD5Disabled) {
System.out.println("MD5 in jdk.jar.disabledAlgorithms: " + daString);
} else {
System.out.println("MD5 allowed for JAR signatures: " + daString);
System.exit(1);
}
}
}
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