| ops | call_counter_wasm | call_counter | no compose_extrinsic | msg decryption | counter update | sgx_file_read | counter update + no_ops ocall |
|---|---|---|---|---|---|---|---|
| ecall | ☑ | ☑ | ☑ | ☑ | ☑ | ☑ | ☑ |
| sgx::fs::read (rsa key) | ☑ | ☑ | ☑ | ☑ | ☑ | ☑ | |
| rsa msg decryption | ☑ | ☑ | ☑ | ☑ | ☑ | ||
| wasm sha256 computation | ☑ | ||||||
| wasm invokation | ☑ | ||||||
| std::file::read | ☑ | ☑ | ☑ | ☑ | ☑ | ||
| sgx::fs::read (aes key) | ☑ | ☑ | ☑ | ☑ | ☑ | ||
| aes decryption | ☑ | ☑ | ☑ | ☑ | ☑ | ||
| aes decryption | ☑ | ☑ | ☑ | ☑ | ☑ | ||
| std::file::write | ☑ | ☑ | ☑ | ☑ | ☑ | ||
| no_ops_ocall | |||||||
| compose extrinsic | ☑ | ☑ | ☑ | ||||
| invokations/s | 332 | 342 | 365 | 400 | 5000 | 8196 | 4587 |
- call_counter represents the operations that are performed in a milestone 1 counter state update.
- call_counter_wasm represents the operations that are performed in a milestone 2 counter state update.
- sgx::fs::read: an SGX call that accesses the sealed enclave storage which is only readable by one specific enclave instance.
- ecall general entry point from the host system to an enclave.
- no_ops_ocall: an ocall (a call from the enclave to the host) that does nothing in order to see the impact of an ocall itself.
- invokations/s: stands for the number of executions per seconds that can be achieved. This does roughly correspond to tx/s.
- RSA decryption is by far the most expensive step in the whole pipeline. This, however, is hard to migitate as long as no more efficient asymmetric encryption exists.
- The effect of sgx::fs::read does only have a small impact.
- wasm invokation's impact is negligible
- If the current RSA de/-encryption process is optimized, >1000 tx/s, is achievable.
All tests have been performend on an Intel NUC NUC8i3BEH2, Bean Canyon i3-8109U 3.0 GHz.