tee+blockchain.puml

package Server {
  class App {
    get_encription_key()
    post_message()
  }
  class Enclave {
    OnceCell<[u8; 32]> SECRET_KEY
    ecall_get_encryption_key() <<ECall>>
    ecall_decrypt() <<ECall>>
  }
  () ECall
}

class Client {
  send_message()
}

package Blockchain {
  class Storage <<Contract>> {
    setValue()
    getValues()
  }
  () ABI
}

Storage -l- ABI

App .> ECall
ECall - Enclave
App <.l. Client: HTTP

App ..> ABI