A Novel Hybrid Multikey Cryptography Technique for Communication

Abstract: Since digital communication has advanced so quickly, data transfer is now essential to many applications, such as multimedia streaming, telemedicine, and monitoring. The security of video communication is still a major concern, though, because of growing data breaches, illegal access, and cyberthreats. Traditional encryption algorithms such as AES and RSA are commonly applied in securing video communication, but they often face limitations like high computational load, complex key handling, and potential weaknesses against quantum-based attacks. To overcome these challenges, this research introduces a Hybrid Multi-Key Cryptography approach that integrates Elliptic Curve Cryptography (ECC) to enhance both security and efficiency during video transmission. The proposed system begins with video segmentation, where the input video is divided into frames and blocks. Each block is then encrypted using a two-layer mechanism: a lightweight symmetric cipher paired with an ECC-driven key exchange. Here, ECC is employed for key distribution and management, ensuring a reliable and secure transfer of encryption keys between the sender and receiver. Then, for quick and effective video frame encryption, the symmetric encryption algorithm is used. The suggested method improves confidentiality and guards against cryptanalysis attacks by dynamically altering the encryption keys at various intervals of time.

Keywords: cryptanalysis attacks, confidentiality, enhanced security.