Algorithm to decode ´identifiable parent property´ codes

In a fingerprinting scheme, marks are embedded in a digital object to protect intellectual property. Dishonest users can collude, change some of the marks and create a new copy. In this case codes with the ´identifiable parent property´ or IPP codes [4], provide means of traceability. Here, both a new decoding algorithm for IPP codes and an improvement of earlier algorithms are presented.