A Quantum Cryptosystem with Perfect Secrecy and Message Authentication
Date Issued
2004-07-18
Date
2004-07-18
Author(s)
Yu, Chia-Mu
DOI
20060927122847429329
Abstract
In this paper, we investigate a quantum cryptosystem with perfect
secrecy and message authentication. In an insecure quantum chan-nel
that Bob communicates with Alice, we provide a cryptosystem
allowing Alice to encrypt and authenticate an n-qubit message by 2n
qubits with probability at least 1 −
1
2 O(n) that Alice and Bob can de-tect
eavesdropper(Eve), and we prove our quantum cryptosystem has
perfect secrecy, that is, we can guarantee that nobody can steal any
useful information from encrypted message.
Subjects
Quantum
Cryptosystem
Authentication
Publisher
臺北市:國立臺灣大學資訊工程學系
Type
other
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