Android_boot_image_editor/boot_signer/build.gradle

apply plugin: 'java'

jar() {
    manifest {
        attributes 'Implementation-Title': 'Gradle Quickstart',
                   'Main-Class': 'com.android.verity.BootSignature'
    }   
    from {configurations.compile.collect { it.isDirectory() ? it : zipTree(it) }} //pack dependent jar 
}

dependencies {
    compile project(':bouncycastle:bcpkix')
    compile project(':bouncycastle:bcprov')
}