code: public void resetTrust(byte[] farEndZID) {
  		platform.getLogger().log("ZRTPCache: resetTrust(", farEndZID);
  		
  		String zidString = new String(farEndZID);
  		ZrtpCacheEntry ce = cache.get(zidString);
  		if (ce == null) return;
  		
  		byte[] data = ce.getData();
  		data[8] = (byte) 0;
  		cache.put(zidString, data, ce.getNumber());
  		
  		if (currentZid.equals(zidString))
  			currentTrust = false; 
  	}
docs: /* if receive a remoteTrust == false, reset current cache status