Patent ID: 6829640
Filing Date: 2004-12-07
Classification: H04L

Abstract:
A method of determining whether first and second byte streams are different, comprising the steps of:providing a first k1 byte long sequence of characters ci for i values from i=1 to k1; providing a second k2 byte long sequence of characters cj for j values from j=1 to k2; computing a modulo arithmetic operation on said i values, and computing said modulo arithmetic operation on said j values; computing a value N1 according to a formula that combines said modulo operation on i and each said character ci for i=1 to k1 using arithmetic or logical operations; computing a value N2 according to said formula by combining said modulo arithmetic operation on j and each said character cj for j=1 to j=k2; and determining, on a basis of a comparison of said N1 and N2 values, whether the first and second byte sequences are different.