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The computational fundament of most public-key cryptosys-tems 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)

- Manfred Schimmler, Christoph Starke
- AWOC
- 1988

- Louis Goubin, Mitsuru Matsui, +65 authors Frederic Valette
- 2007

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)

- 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)

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

- 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 PC-cluster 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

- Manfred Schimmler, Hans-Werner Lang, Rüdiger Maaß
- HPCN
- 1994

- Manfred Kunde, Hans-Werner Lang, Manfred Schimmler, Hartmut Schmeck, Heiko Schröder
- Parallel Computing
- 1988