The bit independence criterion ( BIC ) states that output bits `` j '' and `` k '' should change independently when any single input bit `` i '' is inverted , for all `` i '' , `` j '' and `` k '' .
The Bit independence criterion ( BIC ) states that output bits `` j '' & `` k '' should change independently when any single input bit `` i '' is inverted , for all `` i '' , `` j '' and `` k '' .