Mobile ad hoc network (MANET) is an infrastructure-less, self-motivated, arbitrary, self-configuring, rapidly changing, multi-hop network that is self-possessing wireless bandwidth-conscious links without centrally managed router support. In such a network, wireless media is easy to snoop. It is firm to the surety to access any node, easier to insertion of bad elements or attackers for malicious activities in the network. Therefore, security issues become one of the significant considerations for such kind of networks. The deployment of an effective intrusion detection system is important in order to provide protection against various attacks. In this paper, a Digitally Signed Secure Acknowledgement Method (DSSAM) with the use of the RSA digital signature has been proposed and simulated. Three different parameters are considered, namely secure acknowledgment, node authentication, and packet authentication for study. This article observes the DSSAM performance and compares it with two existing standard methods, namely Watchdog and 2-ACK under standard Dynamic Source Routing (DSR) routing environment. In the end, it is noticed that the rate of detection of malicious behaviour is better in the case of the proposed method. However, associated overheads are high. A trade-off between performance and overhead has been considered.

移动自组织网络（MANET）是一种无需基础设施，自发性强，任意性，自配置，快速变化的多跳网络，可自动拥有无线带宽意识型链路，而无需集中管理的路由器支持。在这样的网络中，无线媒体很容易被监听。确保对任何节点的访问都是坚定的，更容易插入不良元素或攻击者以进行网络中的恶意活动。因此，安全性问题已成为此类网络的重要考虑因素之一。为了防止各种攻击，有效的入侵检测系统的部署很重要。本文提出并仿真了一种使用RSA数字签名的数字签名安全确认方法（DSSAM）。考虑了三个不同的参数，即安全确认，节点身份验证和用于研究的数据包身份验证。本文观察了DSSAM的性能，并将其与标准动态源路由（DSR）路由环境下的两种现有标准方法（即看门狗和2-ACK）进行了比较。最后，注意到在所提出的方法的情况下，恶意行为的检测率更好。但是，相关的开销很高。已考虑在性能和开销之间进行权衡。注意到，在所提出的方法的情况下，恶意行为的检测率更好。但是，相关的开销很高。已考虑在性能和开销之间进行权衡。注意到，在所提出的方法的情况下，恶意行为的检测率更好。但是，相关的开销很高。已考虑在性能和开销之间进行权衡。