# Secure Video Communication Using Multi-Equation Multi-Key Hybrid Cryptography
## 2 Related Work  
[PERSON] et al. [14] offer a collection of tools for creating and using keys in the context of both an external world and an identity-based environment. This unique naming scheme, which only supports a few situations at the moment, solves the problem of key revocation (e.g., expire by date, expire by year, and valid for year). Incorporating X.509 standards into identity-based cryptography (IBC) in this implementation gives a high level of interoperability compared to previous efforts on hybrid PKI-IBC systems. The minimal services can be combined with already-existing tools like the Enterprise Java Bean Certified Authority (EIJSCA). [PERSON] et al. [15] suggested a more secure way of authentication. This approach lowers the number of vulnerabilities that are a direct product of the process while maintaining the current structure of accepted paradigms. Additionally, it does not raise the level of accountability placed on users or server administrators. The suggested approach uses a hybrid, layered encryption strategy and a two-step verification procedure. Without increasing vulnerabilities for other attacks, such as brute-force attacks, this combination provides dynamic protection against interception-based cyberattacks, such as replay or MiTM attacks. The capabilities of encryption for providing security in distributed storage were introduced in [16; 17]. This was accomplished by investigating standard encryption methods like AES, ECC, and RSA. The problem of identifying an efficient and secure encryption method was, in any event, resolved by this research with regard to the variations in the exhibition of these processes; while some encryption techniques can guarantee security, they require a long time to encode and decrypt data. However, while various methods may provide effective encryption, they still suffer from the negative impacts of the requirement for security. A two-level cryptographic method and a model for enhancing information security in cloud computing were proposed in [18; 19; 20]. In order to increase the security of the information against intrusion, the model uses symmetric and asymmetrical encryption computation (AES and ECC). By preventing them from accessing accurate information, it strengthens information protection, legitimacy, and processing times required for crypto  
Figure 2: Multi-key-based hybrid cryptography technique [13]. graphic operations. This increases the degree of customer confidence in cloud computing and speeds up the use of ECC's more constrained keys in cryptographic interactions. An equation-based cryptography protocol is discussed by [PERSON] et al. [21]. [PERSON] et al. [22] have proposed a hybrid method that considers a multi-user condition and provides security. [PERSON] et al. [23] reviewed attribute-based encryption techniques. Attribute-based encryption (ABE) is a type of public key encryption that allows users to encode and rewrite communications based on the user's approved attributes. The scale of the ciphertext is directly proportionate to the number of attributes associated with it, and thus, the encryption duration is proportional to the number of attributes used throughout encryption. Several reasonable ABE versions use one pairing procedure per attribute throughout secret writing. [PERSON] et al. [24] suggested an attribute-based searchable encryption method with blockchain-verified ciphertext. The keyword, symmetric key, and file are encrypted using the public key method, attribute-based encryption, and symmetric key. The blockchain stores the term index, and the cloud server stores the symmetric key and file ciphertext. The authority centre handles user attribute removal using proxy re-encryption technology when the user's attributes or ciphertext access structure changes. [PERSON] et al. [25] proposed a new attribute-based encryption scheme that used a fixed-size key. The access policy in this work can be expressed as any monotone access structure.