2001 | OriginalPaper | Buchkapitel
Public-Key Crypto-systems Using Symmetric-Key Crypto-algorithms
verfasst von : Bruce Christianson, Bruno Crispo, James A. Malcolm
Erschienen in: Security Protocols
Verlag: Springer Berlin Heidelberg
Enthalten in: Professional Book Archive
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The prospect of quantum computing makes it timely to consider the future of public-key crypto-systems. Both factorization and discrete logarithm correspond to a single quantum measurement, upon a superposition of candidate keys transformed into the fourier domain. Accordingly, both these problems can be solved by a quantum computer in a time essentially proportional to the bit-length of the modulus, a speed-up of exponential order.