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- Manfred Schimmler, Christoph Starke
- AWOC
- 1988

Cryptanalysis of symmetric and asymmetric ciphers is computationally extremely demanding. Since the security parameters (in particular the key length) of almost all practical crypto algorithms are chosen such that attacks with conventional computers are computationally infeasible, the only promising way to tackle existing ciphers (assuming no mathematical… (More)

The computational fundament of most public-key cryptosystems is the modular multiplication. Improving the efficiency of the modular multiplication is directly associated with the efficiency of the whole cryptosystem. This paper presents an implementation and comparison of three recently proposed, highly efficient architectures for modular multiplication on… (More)

- Viktor Bunimov, Manfred Schimmler
- ASAP
- 2003

A new modular multiplication algorithm and its corresponding architecture is presented. It is optimised with respect to hardware complexity and latency. Based on the data flow of the well known interleaved modular multiplication the product of two n-bit-integers X and Y modulo M is computed by n iterations of a simple loop. The loop consists of one single… (More)

Today’s general purpose computers lack in meeting the requirements on computing performance for standard applications in bioinformatics like DNA sequence alignment, error correction for assembly, or TFBS finding. The size of DNA sequence databases doubles twice a year. On the other hand the advance in computing performance per unit cost only doubles every 2… (More)

- Bertil Schmidt, Heiko Schröder, Manfred Schimmler
- IPDPS
- 2002

In this paper we present new approaches to high performance protein database scanning on two novel massively parallel architectures to gain supercomputer power at low cost. The first architecture is built around a Beowulf PCcluster linked by a high-speed network and fine-grained parallel Systola 1024 processor boards connected to each node. The second… (More)

- Hans-Werner Lang, Manfred Schimmler, Hartmut Schmeck, Heiko Schröder
- IEEE Trans. Computers
- 1985

- Bertil Schmidt, Manfred Schimmler, Heiko Schröder
- Euro-Par
- 1997

- Michael Wittig, Jarl A. Anmarkrud, +11 authors Andre Franke
- Nucleic acids research
- 2015

The human leukocyte antigen (HLA) complex contains the most polymorphic genes in the human genome. The classical HLA class I and II genes define the specificity of adaptive immune responses. Genetic variation at the HLA genes is associated with susceptibility to autoimmune and infectious diseases and plays a major role in transplantation medicine and… (More)

- Tim Güneysu, Christof Paar, Gerd Pfeiffer, Manfred Schimmler
- 2008 International Conference on Field…
- 2008

Cryptanalysis of symmetric and asymmetric ciphers is a challenging task due to the enormous amount of involved computations. To tackle this computational complexity, usually the employment of special-purpose hardware is considered as best approach. We have built a massively parallel cluster system (COPACOBANA) based on low-cost FPGAs as a cost-efficient… (More)