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MLCC: A new hash-chained mechanism for multicast source authentication

机译：MLCC：一种用于多播源身份验证的新的哈希链机制

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摘要

Asymmetric cryptography has been widely used to generate a digital signature for message authentication. However, such a strategy cannot be used for packet authentication. Neither the source nor the receiver will be capable of handling the computational cost of asymmetric cryptography. For unicast communication, the solution adopted is based on symmetric cryptography. Solutions based on symmetric cryptography do not scale for multicast communication. Several solutions have been reported to authenticate multicast streams, with the possibility of packet losses. Proposed solutions are based on the concept of signature amortization, where a single signature is amortized on several packets. In this paper we present a new mechanism for multicast data source authentication based on signature amortization. Multi-layers connected chains divides the packet stream into a multi-layer structure, where each layer is a two-dimensional matrix. The hash of a packet is included into a forward chain of packets within the same layer as well as a downward chain of packets across multiple layers. The values of the key parameters that influence the mechanism efficiency as well as its performance are selected following a mathematical analysis. Comparisons of performance results with the well-known efficient multi-chained stream signature scheme as well as a recently reported scheme multiple connected chains model show that the proposed mechanism achieves a stronger resistance to packet losses with low overhead and high authentication probability.
机译：非对称密码术已被广泛用于生成用于消息身份验证的数字签名。但是，这种策略不能用于分组认证。源和接收者都不能处理非对称密码的计算成本。对于单播通信，采用的解决方案基于对称密码。基于对称密码的解决方案无法扩展用于多播通信。据报道，有几种解决方案可对多播流进行身份验证，并可能造成数据包丢失。提出的解决方案基于签名摊销的概念，其中单个签名在多个数据包上摊销。本文提出了一种基于签名分摊的组播数据源认证新机制。多层连接的链将数据包流划分为多层结构，其中每一层都是二维矩阵。数据包的哈希值包括在同一层内的数据包的前向链以及跨多个层的数据包的下链。在进行数学分析之后，选择影响机构效率及其性能的关键参数的值。性能结果与著名的高效多链流签名方案以及最近报告的方案多连接链模型的比较表明，该机制以较低的开销和较高的认证概率实现了对分组丢失的更强抵抗力。

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