oldsha.reset();
newsha.reset();
oldh = oldsha.digest(hBuffer);
newh = newsha.digest(hBuffer);
oldsha.reset();
newsha.reset();
oldd = oldsha.digest(dBuffer);
newd = newsha.digest(dBuffer);
if(!Arrays.equals(oldh, newh) || !Arrays.equals(oldd, newd) || !Arrays.equals(oldd, oldh))