# A Secured Intrusion Detection System for Mobile Edge Computing
## 4 Proposed SEC-IDS Framework  
In the evolving landscape of ubiquitous connectivity, the increasing prominence of mobile edge computing (MEC) underscores the critical need for robust security measures within edge environments. This paper addresses this imperative by presenting a ground-breaking intrusion detection system (IDS) framework tailored explicitly for MEC. The SEC-IDS framework stands out by leveraging a certificate authority (CA) infrastructure, introducing a novel approach to enhance the security landscape of mobile edge networks. At its core, the framework employs CA principles to validate and authenticate communication channels between edge devices and services operating within the MEC ecosystem. By integrating this CA-based approach, the SEC-IDS not only establishes a foundation for trusted communication but also reinforces the overall integrity and confidentiality of data exchanged at the edge. This innovative framework represents a significant stride in fortifying the security posture of MEC environments, offering a reliable and scalable solution to address the unique challenges posed by the dynamic and distributed nature of edge computing. Figure 1 presents the proposed CA-based SEC-IDS for edge computing. Figure 1: CA-based secured IDS for mobile-based edge computing. The key components of the framework include:  
_Certificate Management System:_  
A robust system for issuing, distributing, and managing digital certificates for edge devices within the MEC environment. Certificates play a pivotal role in establishing secure communication channels. Equation (1) is used to generate the digital signature as follows:  
\[cd=\text{CA.Sign}(d) \tag{1}\]  
_Verify(cd,p)_  
In the proposed model for mobile edge computing (MEC) with the SEC-IDS (Secured Edge Computing Intrusion Detection System) framework, the certificate management system (CMS) plays a crucial role in enhancing the security and trustworthiness of communication channels within the MEC ecosystem. The CMS serves as the central component responsible for the issuance, distribution, renewal, and revocation of digital certificates, adding an additional layer of authentication and validation to the communication process. The primary functions of the certificate management system in the proposed model include:  
* _Certificate Issuance:_ The CMS generates digital certificates for entities within the MEC environment, such as edge devices and services. These certificates serve as cryptographic credentials, attesting to the authenticity and legitimacy of the entities involved in communication. * _Public Key Distribution:_ The CMS facilitates the distribution of public keys associated with the issued certificates. This is essential for enabling secure communication through encryption and ensuring that only authorized entities can decrypt and access sensitive information. * _Certificate Renewal and Revocation:_ The CMS manages the lifecycle of digital certificates, overseeing their renewal to maintain up-to-date cryptographic credentials. Additionally, it handles the revocation of certificates in cases of compromised security or changes in entity authorization status, thereby promptly mitigating security risks. * _Authentication and Trust Establishment:_ By relying on the CA infrastructure, the CMS contributes to the establishment of a trusted communication channel within the MEC ecosystem. Digital certificates issued and managed by the CMS serve as trusted indicators, allowing entities to verify the authenticity of their counterparts before engaging in data exchange. * _Integrity and Confidentiality Assurance:_ Through the issuance and verification of digital signatures, the CMS ensures the integrity of data transmitted within the MEC environment. It also plays a vital role in maintaining the confidentiality of communication by managing the encryption keys associated with the certificates.