The main `tpm` crate is the TSS (and OS-specific bindings to the TPM).
The `simulator` crate contains an abstraction around Microsoft's
[TPM2 simulator](https://sourceforge.net/projects/ibmswtpm2/).
Copyright 2022 Google Inc. under the
[Apache 2.0 License](https://www.apache.org/licenses/LICENSE-2.0).
This is not an official Google product.