TY - RPRT A1 - Melnyk, Viktor A1 - Bäsig, Jürgen T1 - Modelling DES Soft-Cores for information protection N2 - This paper discusses the possibilities of IPtechnologies for information protection. An analysis of modern information protection Soft-Cores which support symmetric block ciphers is given. Development perspectives of the Soft-Cores are described. The DES Algorithm and the variations of the architecture of the DES Soft-Core models are considered, their analysis provided and they are compared with some existing DES Soft-Cores on the world market. Two architectures - iterative and pipelined - are identified. Twenty six variations of the DES Soft-Core are proposed and a comparative analysis of their architecture is given. The proposed DES Soft-Cores support all of the discussed functional possibilities. Thus a high performance is achieved, the equipment volume for their realization is lowered and they can be used effectively in a wide spectrum of the application fields. T3 - Sonderdruck / Schriftenreihe der Georg-Simon-Ohm-Hochschule, Nürnberg - 9 KW - Data Encryption Standard Y1 - 2002 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:92-opus-1140 ER -