This document discusses techniques for securing data in multi-cloud computing simulations. It proposes a protocol for securely transferring data between cloud servers and storage nodes using encryption and digital signatures. The protocol uses cryptographic algorithms like elliptic curve cryptography to encrypt data, generate digital signatures for authentication, and distribute encrypted data fragments across multiple clouds for redundancy and access control. A simulation of the protocol shows how cloudlets are distributed across different data centers and virtual machines using encrypted channels and access controls. The protocol aims to provide secure data transmission and storage in multi-cloud environments.