LinuxQuestions.org - Enabling WebCam Driver using gspca

Hello, Im trying to install the gspca driver that enables support for my HP webcam into linux. But when trying to build it I received the error: FATAL, you need to install the Kernal source for your running kernel.

Im running 4.6.4 and been trying to install the kernel for a few days now but to no luck. Followed many instructions and from here, http://ask.xmodulo.com/install-full-...an-ubuntu.html

when i ran

Code:

$ apt-get source linux-image-$(uname -r)

Code:

apt-get source linux-image-$(uname -r)

Reading package lists... Done

Picking 'linux' as source package instead of 'linux-image-4.6.4-040604-generic'

NOTICE: 'linux' packaging is maintained in the 'Git' version control system at:

https://anonscm.debian.org/git/kernel/linux.git

Please use:

git clone https://anonscm.debian.org/git/kernel/linux.git

to retrieve the latest (possibly unreleased) updates to the package.

Need to get 94.1 MB of source archives.

Get:1 http://kali.mirror.garr.it/mirrors/kali kali-rolling/main linux 4.6.4-1kali1 (dsc) [146 kB]

Get:2 http://kali.mirror.garr.it/mirrors/kali kali-rolling/main linux 4.6.4-1kali1 (tar) [90.7 MB]

Get:3 http://kali.mirror.garr.it/mirrors/kali kali-rolling/main linux 4.6.4-1kali1 (diff) [3,258 kB]

Fetched 94.1 MB in 4min 4s (385 kB/s)                              

gpgv: keyblock resource `/root/.gnupg/trustedkeys.gpg': file open error

gpgv: Signature made Thu 21 Jul 2016 06:19:23 AM EDT using RSA key ID 206FEE30

gpgv: Can't check signature: public key not found

dpkg-source: warning: failed to verify signature on ./linux_4.6.4-1kali1.dsc

How do I get the .dsc file to be verified?