Implemented signed OpenID token with default algorithm RSA256.

Change-Id: I5bd5bed5c556e550244e06299bc7e54f53226401
diff --git a/full/src/test/resources/kustvakt-public.key b/full/src/test/resources/kustvakt-public.key
new file mode 100644
index 0000000..087d6f7
--- /dev/null
+++ b/full/src/test/resources/kustvakt-public.key
@@ -0,0 +1 @@
+MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCJVX3D3vj1xqYegV9c1PR0NZErdJc9iyBgAfpKx3I+aGlnkv+MYnL5phkROTHiUBDCHIo5dzl43WUe5StXcZ9VFB7mWt4ozJzIA3EM/QbhoPuPUeSnUpJDMJVVuQXbdPE5lPbXhXUKYPu27FRiqUrlushOsJIKPlsLn8Nt1CzZIwIDAQAB
\ No newline at end of file