Abstract: The main assumption of ad hoc routing protocols is that all participating nodes do so in good faith without disrupting the operation of the protocol. However, due to the absence of properly protected media and well trusted infrastructures and the reliance on unknown third parties for data forwarding, Mobile Ad hoc Networks (MANETs) are intrinsically vulnerable to various attacks. The security issue of MANETs is even more challenging because of the involvement of multiple senders and multiple receivers. Achieving trustworthy and secure and reliable communication is a major technical challenge in MANETs. The main focus of this study is to propose a secure framework for routing attacks by authenticating nodes using localized certificate chains. This proposed architecture combines the certificate chaining techniques with the existing route discovery scheme of on-demand multicast routing protocols.