Adding upstream version 115.7.0esr.upstream/115.7.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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+# A Rust library for interacting with CTAP1/CTAP2 Security Keys
+
+[![Build Status](https://travis-ci.org/mozilla/authenticator-rs.svg?branch=master)](https://travis-ci.org/mozilla/authenticator-rs)
+![Maturity Level](https://img.shields.io/badge/maturity-release-green.svg)
+
+This is a cross-platform library for interacting with Security Key-type devices via Rust.
+
+* **Supported Platforms**: Windows, Linux, FreeBSD, NetBSD, OpenBSD, and macOS.
+* **Supported Transports**: USB HID.
+* **Supported Protocols**: [FIDO U2F over USB](https://fidoalliance.org/specs/fido-u2f-v1.1-id-20160915/fido-u2f-raw-message-formats-v1.1-id-20160915.html). [CTAP2 support](https://fidoalliance.org/specs/fido-v2.0-ps-20190130/fido-client-to-authenticator-protocol-v2.0-ps-20190130.html) is forthcoming, with work being done in the **unstable** [`ctap2` branch](https://github.com/mozilla/authenticator-rs/tree/ctap2).
+
+This library currently focuses on USB security keys, but is expected to be extended to
+support additional transports.
+
+## Usage
+
+There's only a simple example function that tries to register and sign right now. It uses
+[env_logger](http://rust-lang-nursery.github.io/log/env_logger/) for logging, which you
+configure with the `RUST_LOG` environment variable:
+
+```
+cargo build --example main
+RUST_LOG=debug cargo run --example main
+```
+
+Proper usage should be to call into this library from something else - e.g., Firefox. There are
+some [C headers exposed for the purpose](./src/u2fhid-capi.h).
+
+## Tests
+
+There are some tests of the cross-platform runloop logic and the protocol decoder:
+
+```
+cargo test
+```
+
+## Fuzzing
+
+There are fuzzers for the USB protocol reader, basically fuzzing inputs from the HID layer.
+There are not (yet) fuzzers for the C API used by callers (such as Gecko).
+
+To fuzz, you will need cargo-fuzz (the latest version from GitHub) as well as Rust Nightly.
+
+```
+rustup install nightly
+cargo install cargo-fuzz
+
+cargo +nightly fuzz run u2f_read -- -max_len=512
+cargo +nightly fuzz run u2f_read_write -- -max_len=512
+```