Makes the random string method more random

Change-Id: Ife0e7aa6b74e63f7703d120911e87119c9a7a5d6
Makes the auth provider's get_access_data method static

Change-Id: Ie14dd561a6bbac1b96402d1fa577be73fa17c655
Merge "Makes the auth provider's get_access_data method static"
Merge "Makes the random string method more random"