dorsal/arxiv
View SchemaEntropic security in Quantum Cryptography
| Authors | Simon Pierre Desrosiers |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0703046 |
| URL | https://arxiv.org/abs/quant-ph/0703046 |
Abstract
We present two new definitions of security for quantum ciphers which are inspired by the definition of entropic security and entropic indistinguishability defined by Dodis and Smith. We prove the equivalence of these two new definitions. We also propose a generalization of a cipher described by Dodis and Smith and show that it can actually encrypt n qubits using less than n bits of key under reasonable conditions and yet be secure in an information theoretic setting. This cipher also totally closes the gap between the key requirement of quantum ciphers and classical ciphers.
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"abstract": "We present two new definitions of security for quantum ciphers which are\ninspired by the definition of entropic security and entropic\nindistinguishability defined by Dodis and Smith. We prove the equivalence of\nthese two new definitions. We also propose a generalization of a cipher\ndescribed by Dodis and Smith and show that it can actually encrypt n qubits\nusing less than n bits of key under reasonable conditions and yet be secure in\nan information theoretic setting. This cipher also totally closes the gap\nbetween the key requirement of quantum ciphers and classical ciphers.",
"arxiv_id": "quant-ph/0703046",
"authors": [
"Simon Pierre Desrosiers"
],
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"quant-ph"
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"title": "Entropic security in Quantum Cryptography",
"url": "https://arxiv.org/abs/quant-ph/0703046"
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