One of the most challenging security requirements in a PaaS platform setting is authentication. We provide a new signature-based authenticated key establishment approach for PaaS platform security improvement in this study. It adds a feature to increase confidentiality and non-repudiation by requiring the sender to sign a specific action while sending data from one user to another. It’s signed with the transaction’s private key and a public-key value-based signature generated with the transaction’s public key. Use the public key value-based signature that was generated to authenticate this operation, and the hashing process assures that the operation is immutable. Our proposed solution delivers improved data security, throughput, reaction speed, and a reduction in end-to-end delay and overhead when compared to existing methodologies. The results of the experiments reveal that the proposed system achieves a superior outcome to the existing methods. This project makes use of the MATLAB platform.