Masking property of quantum random cipher with phase mask encryption
| Autor: | Masaki Sohma, Osamu Hirota |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Plaintext-aware encryption
Computer science business.industry Statistical and Nonlinear Physics Cryptography Encryption Theoretical Computer Science Electronic Optical and Magnetic Materials Deterministic encryption Multiple encryption Probabilistic encryption Modeling and Simulation Signal Processing 40-bit encryption Attribute-based encryption Electrical and Electronic Engineering business Algorithm Computer Science::Cryptography and Security |
| Zdroj: | Quantum Information Processing. 13:2221-2239 |
| ISSN: | 1573-1332 1570-0755 |
| DOI: | 10.1007/s11128-014-0748-4 |
| Popis: | The security analysis of physical encryption protocol based on coherent pulse position modulation (CPPM) originated by Yuen is one of the most interesting topics in the study of cryptosystem with a security level beyond the Shannon limit. Although the implementation of CPPM scheme has certain difficulty, several methods have been proposed recently. This paper deals with the CPPM encryption in terms of symplectic transformation, which includes a phase mask encryption as a special example, and formulates a unified security analysis for such encryption schemes. Specifically, we give a lower bound of Eve's symbol error probability using reliability function theory to ensure that our proposed system exceeds the Shannon limit. Then we assume the secret key is given to Eve after her heterodyne measurement. Since this assumption means that Eve has a great advantage in the sense of the conventional cryptography, the lower bound of her error indeed ensures the security level beyond the Shannon limit. In addition, we show some numerical examples of the security performance. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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