# Secure Video Communication Using Multi-Equation Multi-Key Hybrid Cryptography
###### Abstract
The utilisation of the Secure Real-time Transport Protocol (SRTP) in this particular procedure has presented challenges in terms of key management throughout its entirety. As the network's decentralisation increases, the complexity of addressing the key management problem also intensifies. The task of successfully splitting the key or algorithms utilised in various internet safety enhancement methods is widely regarded as an insurmountable challenge. Due to the implications of the factors mentioned above, there is a notable surge in ongoing research endeavours aimed at advancing asymmetric key cryptography methodologies [7; 8]. Asymmetric cryptography, also known as public-key cryptography, has emerged as a significant solution to the challenges posed by symmetric cryptography. Prominent methods in this field include Rivest-Shamir-Adleman (RSA) [9] and Elliptic Curve Cryptography (ECC) [10; 11; 12]. These methods have been extensively studied and are currently gaining recognition for their effectiveness in addressing the limitations of symmetric cryptography. Figure 1 illustrates the application of asymmetric key cryptography in the context of video transmission. In order to optimise the real-time transfer of substantial data volumes, particularly videos, video streaming programs commonly employ a technique known as data segmentation. This involves dividing the data into smaller, more manageable segments. Traditional encryption and decryption techniques predominantly depend on symmetric key cryptography, which employs the same key for both encryption and decryption processes. However, it is important to note that security vulnerabilities can emerge due to the manner  
Figure 1: Using asymmetric key cryptography for secure video communication. in which keys are exchanged between parties involved in the communication process. Hence, implementing asymmetric key cryptography techniques can significantly enhance the security level for online video transmission. The utilisation of a dynamic key generation technique is imperative for this approach due to the inherent static nature of the keys employed. This study presents a novel approach to encrypting video segments using asymmetric key cryptography principles. This research involves the design and development of a novel equation-based multi-key encryption technique and a method for generating video-attribute-based decryption keys. Multi-key cryptography provides a resilient method for ensuring security by utilising many keys and participants in cryptography processes. The primary benefit of this approach is its enhanced security, as it becomes considerably more challenging for attackers to break numerous keys simultaneously. The utilisation of this approach facilitates the dispersion of trust across involved actors, rendering it applicable in the context of safe inter-organisational interactions. Moreover, it streamlines the process of managing cryptography keys, guarantees the preservation of anonymity in collaborative computations, and facilitates the use of threshold cryptography for activities that necessitate collective agreement. Multi-key cryptography enhances the overall integrity of a system. Dynamic key generation is a key part of cryptography. By making private keys on the fly, it improves security. This method increases security by ensuring that keys last only a short time and are changed often. This makes it hard for attackers to take advantage of security holes. Notably, dynamic key creation is based on the idea of \"perfect forward secrecy\", which means that each session key protects both past and future communications, even if the key is compromised. Cryptography systems can react to changing security needs and operational dynamics by making keys on the fly. This makes key compromises less dangerous and stops attacks, like replay attacks and cryptanalysis, from happening. This method is not only in line with the rules for key management, but it also protects data security, privacy, and compliance in a digital world that is always changing.