论文标题
在干扰器中使用非c-ausal侧信息的任意变化的窃听通道
Arbitrarily Varying Wiretap Channels with Non-Causal Side Information at the Jammer
论文作者
论文摘要
在潜在的恶意环境中的安全沟通变得越来越重要。任意变化的窃听通道（AVWC）提供了有关即使在有活动攻击者存在的情况下也可以交换多少信息的信息。如果主动攻击者具有非因果的侧面信息，则可以对合法通信系统的情况进行建模。我们在干扰器上使用非cusal侧信息调查了AVWC，以至于存在通往Eavesdropper的最佳渠道。非毒物侧信息意味着在传输之前，发射的代码字已知为活动对手。通过考虑最大误差标准，我们还允许在jammer中知道消息在相应的代码字传输之前。得出了共同的随机性保密能力的单个字母公式。此外，我们为常见的随机性保密能力提供了一个单个字母公式，因为那些窃听器的通道强烈降低，更糟糕或相对于主渠道的能力较低。此外，我们将结果与最大误差标准案例的随机代码保密能力进行比较，但在干扰器处没有非混合侧信息，最大误差标准在Jammer处的消息的非伴侣侧信息，以及在Jammer中无需非caus侧信息的平均误差标准的情况。
Secure communication in a potentially malicious environment becomes more and more important. The arbitrarily varying wiretap channel (AVWC) provides information theoretical bounds on how much information can be exchanged even in the presence of an active attacker. If the active attacker has non-causal side information, situations in which a legitimate communication system has been hacked, can be modeled. We investigate the AVWC with non-causal side information at the jammer for the case that there exists a best channel to the eavesdropper. Non-causal side information means that the transmitted codeword is known to an active adversary before it is transmitted. By considering the maximum error criterion, we allow also messages to be known at the jammer before the corresponding codeword is transmitted. A single letter formula for the common randomness secrecy capacity is derived. Additionally, we provide a single letter formula for the common randomness secrecy capacity, for the cases that the channel to the eavesdropper is strongly degraded, strongly noisier, or strongly less capable with respect to the main channel. Furthermore, we compare our results to the random code secrecy capacity for the cases of maximum error criterion but without non-causal side information at the jammer, maximum error criterion with non-causal side information of the messages at the jammer, and the case of average error criterion without non-causal side information at the jammer.
