Add jar signing, fixes #1514

build.gradle

@@ -96,6 +96,21 @@ task apiJar(type: Jar, dependsOn: 'sourceMainJava') {
     classifier 'api'
 }
 
+task signJar(type: SignJar, dependsOn: reobfJar) {
+    onlyIf {
+        project.hasProperty('keyStore')
+    }
+
+    keyStore = project.findProperty('keyStore')
+    alias = project.findProperty('keyStoreAlias')
+    storePass = project.findProperty('keyStorePass')
+    keyPass = project.findProperty('keyStoreKeyPass')
+    inputFile = jar.archivePath
+    outputFile = jar.archivePath
+}
+
+build.dependsOn signJar
+
 artifacts {
     archives deobfJar
     archives apiJar