fabrid demo copy

Author: Marc Odermatt

demo/fabrid/BUILD.bazel

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+load("@io_bazel_rules_go//go:def.bzl", "go_binary")
+load("//:scion.bzl", "scion_go_binary")
+load("//acceptance/common:topogen.bzl", "topogen_test")
+load("//tools/lint:go.bzl", "go_library")
+
+topogen_test(
+    name = "test",
+    src = "test.py",
+    args = [
+        "--executable=drkey-demo:$(location //demo/drkey:drkey-demo)",
+    ],
+    data = ["//demo/drkey:drkey-demo"],
+    topo = "//topology:tiny4.topo",
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = ["main.go"],
+    importpath = "github.com/scionproto/scion/demo/drkey",
+    visibility = ["//visibility:private"],
+    deps = [
+        "//pkg/addr:go_default_library",
+        "//pkg/daemon:go_default_library",
+        "//pkg/drkey:go_default_library",
+        "//pkg/drkey/generic:go_default_library",
+        "//pkg/drkey/specific:go_default_library",
+        "//pkg/private/serrors:go_default_library",
+        "//pkg/proto/control_plane:go_default_library",
+        "//pkg/proto/drkey:go_default_library",
+        "//pkg/scrypto/cppki:go_default_library",
+        "//pkg/snet:go_default_library",
+        "//private/app/flag:go_default_library",
+        "@com_github_spf13_pflag//:go_default_library",
+        "@org_golang_google_grpc//:go_default_library",
+        "@org_golang_google_protobuf//types/known/timestamppb:go_default_library",
+    ],
+)
+
+scion_go_binary(
+    name = "drkey-demo",
+    embed = [":go_default_library"],
+    visibility = ["//visibility:public"],
+)
+
+go_binary(
+    name = "drkey",
+    embed = [":go_default_library"],
+    visibility = ["//visibility:public"],
+)

demo/fabrid/README.md

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+# DRKey demo
+
+This demo shows how two hosts can obtain a shared key with the DRKey system.
+The "server" side host can locally derive keys for any other host.
+The slower "client" side host can fetch its corresponding key from
+the DRKey infrastructure running in the control services.
+
+Note that in this demo, no data is transmitted between "client" and "server".
+In a practical usage, the server would derive the key for the client's address
+after receiving a packet from the client.
+
+The demo consists of the following steps:
+
+1. Enable and configure DRKey and start the topology.
+1. Demonstrate the server side key derivation
+1. Demonstrate the client side key fetching
+1. Compare the keys
+
+## Run the demo
+
+1. [set up the development environment](https://docs.scion.org/en/latest/build/setup.html)
+1. `bazel test --test_output=streamed --cache_test_results=no //demo/drkey:test`
+
+Note: this demo works on any SCION network topology. To run the demo on a
+different network topology, modify the `topo` parameter in `BUILD.bazel` to
+point to a different topology file.