Dumbledore is the Secret-Keeper?

[Odile]

No: HPFGUIDX 5979

We learn in book 3 that when there is a secret magically stored 
within a human being, then a person cannot see what has been hidden 
before  them even if they are staring right at them.  We also learned 
that Dumbledore offered the Potters to be their Secret-Keeper instead 
of Sirius.

Is it safe to assume that Dumbledore is Harry's Secret-Keeper and 
therefore, Voldemort cannot find Harry while he is at the Dursleys?  
Or can we assume that Vernon Dursely is the Secret-Keeper, without 
knowing? (I think it's Dumbledore.)


Odile