Content Integrity System and Notarisation for Long-Term Protection of Data Objects

Guarantee of authenticity, integrity and datedness is necessary to rely on digital data objects. In literature, there are several solutions which offer these guarantees in the long term, but not much is known about their performance. This work presents implementations for two promising solutions, namely Content Integrity System and Notarisation, and compares them in regard to their computational performance. The comparison reveals that Notarisation outperforms Content Integrity System in almost every aspect, but a verifier has to make higher trust assumptions in order to trust in the protection of a data object.