In this paper, we consider the relationship between C Shannon’s unicity distance, which is determined by the number of symbols of the encrypted message required to uniquely find the encryption key of the cryptosystem in information-theoretical sense, ε-secrecy criterion in quantum cryptography and Holevo information. A lower bound for the unicity distance for ε-secret keys in quantum cryptography is obtained. The relationship between unicity distance, ε-secrecy criterion in quantum cryptography and Holevo information is demonstrated.

中文翻译：

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量子密码学中的香农唯一性距离，ε-保密准则和Holevo信息

在本文中，我们考虑ÇShannon的单一性距离，这是由该加密消息的符号的数量来确定的关系所需的唯一找到密码系统中的加密密钥信息的理论意义上，ε在量子密码-secrecy标准和Holevo信息。获得了量子密码术中ε秘密密钥的唯一性距离的下限。证明了唯一性距离，量子密码学中的ε保密准则与Holevo信息之间的关系。