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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)

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)

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 (COPA-COBANA) based on low-cost FPGAs as a cost-efficient… (More)

This paper describes a parallel architecture for a variety of algorithms for video compression. It has been designed to meet the requirements of encoding and decoding according to the ITU-T standard H.263. The architecture is an implementation of the instruction systolic array (ISA) model which combines the simplicity of systolic arrays with the flexibility… (More)