diff --git a/PKGBUILD b/PKGBUILD
index 533cec0..922cebb 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -12,7 +12,9 @@ license=('GPL2')
 makedepends=('xmlto' 'docbook-xsl' 'kmod' 'inetutils' 'bc')
 options=('!strip')
 source=("https://www.kernel.org/pub/linux/kernel/v3.x/${_srcname}.tar.xz"
+        "https://www.kernel.org/pub/linux/kernel/v3.x/${_srcname}.tar.sign"
         "https://www.kernel.org/pub/linux/kernel/v3.x/patch-${pkgver}.xz"
+        "https://www.kernel.org/pub/linux/kernel/v3.x/patch-${pkgver}.sign"
         # the main kernel config files
         'config' 'config.x86_64'
         # standard config files for mkinitcpio ramdisk
@@ -20,11 +22,17 @@ source=("https://www.kernel.org/pub/linux/kernel/v3.x/${_srcname}.tar.xz"
         'change-default-console-loglevel.patch'
         )
 sha256sums=('becc413cc9e6d7f5cc52a3ce66d65c3725bc1d1cc1001f4ce6c32b69eb188cbd'
+            'SKIP'
             '4df87c395c94012544ca297db6608fe8e7c8fb5289641c4bfb4d9d87b6f06968'
+            'SKIP'
             'd3794c8b2cd11b71914b41f7a4e861369d4fa3c29fdd9e1d677ff0c2167eeb52'
             'df7886f5d57f8f85e89987066dfa5c316e922dc0b22e6e6ad01331333db52377'
             'f0d90e756f14533ee67afda280500511a62465b4f76adcc5effa95a40045179c'
             '1256b241cd477b265a3c2d64bdc19ffe3c9bbcee82ea3994c590c2c76e767d99')
+validpgpkeys=(
+              'ABAF11C65A2970B130ABE3C479BE3E4300411886' # Linux Torvalds
+              '647F28654894E3BD457199BE38DBBDC86092693E' # Greg Kroah-Hartman
+             )
 
 _kernelname=${pkgbase#linux}