Mobile accounts for almost half of the web traffic worldwide. However, these devices still have computational and energy limitations. Mobile Cloud Computing (MCC) tackles problems like this by migrating tasks and data to remote cloud environments. This technique is known as offloading. However, during this procedure, data is transmitted on the network without protection, which is unfeasible for applications with confidential data that cannot be exposed without security. This work propose a module to ensure the security of data transmitted during computational offloading and that it is easily expandable to any cryptographic algorithms. This work evaluates the performance of computational offloading when adopting Homomorphic cryptography during data migration. The results showed that depending on the operation performed, the time in the offloading process increases up to 900 times.