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Journal ArticleDOI

Generators for Certain Alternating Groups with Applications to Cryptography

Don Coppersmith, +1 more
- 01 Dec 1975 - 
- Vol. 29, Iss: 4, pp 624-627
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TLDR
The subgroup of permutations generated by any one of these ciphers is shown to be the alternating group, in all cases of interest, suggesting that such systems have a high level of security.
Abstract
A set of block ciphers is described which can readily be adapted for computer encipherment of data. The subgroup of permutations generated by any one of these ciphers is shown to be the alternating group, in all cases of interest, suggesting that such systems have a high level of security.

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Citations
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Journal ArticleDOI

Mixed State Entanglement and Quantum Error Correction

TL;DR: It is proved that an EPP involving one-way classical communication and acting on mixed state M (obtained by sharing halves of Einstein-Podolsky-Rosen pairs through a channel) yields a QECC on \ensuremath{\chi} with rate Q=D, and vice versa, and it is proved Q is not increased by adding one- way classical communication.
Journal ArticleDOI

Elementary gates for quantum computation.

TL;DR: U(2) gates are derived, which derive upper and lower bounds on the exact number of elementary gates required to build up a variety of two- and three-bit quantum gates, the asymptotic number required for n-bit Deutsch-Toffoli gates, and make some observations about the number of unitary operations on arbitrarily many bits.
BookDOI

Applied cryptography, second edition : protocols, algorithms,and source code in C

TL;DR: Part I—Cryptographic Protocols Chapter 2—Protocol Building Blocks 2.
Journal ArticleDOI

Privacy and authentication: An introduction to cryptography

TL;DR: The basic information theoretic and computational properties of classical and modern cryptographic systems are presented, followed by cryptanalytic examination of several important systems and an examination of the application of cryptography to the security of timesharing systems and computer networks.
Journal ArticleDOI

Time/space trade-offs for reversible computation

TL;DR: Using a pebbling argument, this paper shows that, for any $\varepsilon > 0$, ordinary multitape Turing machines using time T and space S can be simulated by reversible ones using time $O(T^{1 + \varpsilon } )$ and space $O (S\log T)$ or in linear time and space$O(ST^\varePSilon )$.
References
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Journal ArticleDOI

Cryptography and Computer Privacy

Horst Feistel
- 01 May 1973 -