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## Designs, Codes and Cryptography OnlineFirst articles

17.08.2018

### Key-homomorphic signatures: definitions and applications to multiparty signatures and non-interactive zero-knowledge

Key-homomorphic properties of cryptographic objects, i.e., homomorphisms on their key space, have proven to be useful, both from a theoretical as well as a practical perspective. Important cryptographic objects such as pseudorandom functions or …

16.08.2018

### Classification of optimal (v, k, 1) binary cyclically permutable constant weight codes with 6 and 7 and small lengths

We classify optimal (v, k, 1) binary cyclically permutable constant weight (CPCW) codes with small v and $$k=5, 6$$ k = 5 , 6 and 7. Binary CPCW codes have multiple applications in contemporary communications and are closely related to cyclic …

16.08.2018

### Minimum weight codewords in dual algebraic-geometric codes from the Giulietti-Korchmáros curve

In this paper we investigate the number of minimum weight codewords of some dual algebraic-geometric codes associated with the Giulietti–Korchmáros maximal curve, by computing the maximal number of intersections between the Giulietti–Korchmáros …

14.08.2018

### Some results on Fruit

In FSE 2015, Armknecht et al. proposed a new technique to design stream ciphers, which involves repeated use of keybits in each round of the keystream bit generation. This technique showed the possibility to design stream ciphers where the …

13.08.2018

### The sextuply shortened binary Golay code is optimal

The maximum size of unrestricted binary three-error-correcting codes has been known up to the length of the binary Golay code, with two exceptions. Specifically, denoting the maximum size of an unrestricted binary code of length n and minimum …

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### Über diese Zeitschrift

There is a great deal of activity in design theory, coding theory and cryptography and recently there has been considerable research done which brings together more than one of the subjects. Designs, Codes and Cryptography provides a forum for high quality papers of both a theoretical and a practical nature which bridge more than one of these areas, encouraging interaction between them. It emphasizes the algebraic and geometric aspects of design theory, coding theory and cryptography.

The journal is widely read by engineers, mathematicians, computer scientists and others in education, industry and government.

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### Product Lifecycle Management im Konzernumfeld – Herausforderungen, Lösungsansätze und Handlungsempfehlungen

Für produzierende Unternehmen hat sich Product Lifecycle Management in den letzten Jahrzehnten in wachsendem Maße zu einem strategisch wichtigen Ansatz entwickelt. Forciert durch steigende Effektivitäts- und Effizienzanforderungen stellen viele Unternehmen ihre Product Lifecycle Management-Prozesse und -Informationssysteme auf den Prüfstand. Der vorliegende Beitrag beschreibt entlang eines etablierten Analyseframeworks Herausforderungen und Lösungsansätze im Product Lifecycle Management im Konzernumfeld.