code: public void trust() {
  		cache.updateEntry(cacheExpiryTime(), true, newRS, keepRS2, phoneNumber);
  		delayedCacheUpdate = false;
  	}
docs: Notifies the ZRTP protocol that the user has chosen to trust the
  connection. SAS verified flags is set to true and shared secrets are
  stored in the cache (they should already be in the cache unless they were
  removed by untrust() or delayed because of cache mismatch).