From c1f4a54b344b9d96509f1f36b6ba1d67230a1313 Mon Sep 17 00:00:00 2001
From: Junxiao Shi <git@mail1.yoursunny.com>
Date: Sat, 12 Oct 2024 02:59:56 +0000
Subject: [PATCH] trust-schema: Light VerSec compiler in Python

---
 pkg/pyrepo/README.md            |  4 ++--
 pkg/trust-schema/README.md      | 21 +++++++++++++++++++++
 pkg/trust-schema/lvs/compile.py |  8 ++++++++
 3 files changed, 31 insertions(+), 2 deletions(-)
 create mode 100644 pkg/trust-schema/lvs/compile.py

diff --git a/pkg/pyrepo/README.md b/pkg/pyrepo/README.md
index 263e5e30..0ba65a1b 100644
--- a/pkg/pyrepo/README.md
+++ b/pkg/pyrepo/README.md
@@ -8,8 +8,8 @@ To install and start the specified version, run:
 
 ```bash
 # create Python virtual environment
-python3 -m venv ~/pyrepo-venv
-source ~/pyrepo-venv/bin/activate
+python3 -m venv ~/pyrepo.venv
+source ~/pyrepo.venv/bin/activate
 
 # install ndn-python-repo
 pip install git+https://github.com/UCLA-IRL/ndn-python-repo@2dcd229a4cb81927a52e8a8f1d963c55ee939ffa
diff --git a/pkg/trust-schema/README.md b/pkg/trust-schema/README.md
index 55b90702..c169528a 100644
--- a/pkg/trust-schema/README.md
+++ b/pkg/trust-schema/README.md
@@ -151,6 +151,27 @@ await keyChain.insertCert(rootCert);
 const schema = new TrustSchema(policy, [rootCert]);
 ```
 
+## LVS Binary Format
+
+This package intends to support importing [python-ndn Light VerSec (LVS)](https://python-ndn.readthedocs.io/en/latest/src/lvs/lvs.html) binary format.
+This feature is still in design stage.
+
+To compile LVS textual format to binary format, you need to use python-ndn:
+
+```bash
+# create Python virtual environment
+python3.11 -m venv ~/lvs.venv
+source ~/lvs.venv/bin/activate
+
+# install python-ndn
+pip install 'python-ndn[dev] @ git+https://github.com/named-data/python-ndn@177844e6142bd4616929bbbfa10a857569fbdf5b'
+
+# run the compiler
+python ./lvs/compile.py <~/lvs-model.txt >~/lvs-model.tlv
+```
+
+The compiled binary TLV will be importable into NDNts in the future.
+
 ## Trust Schema Signer
 
 `TrustSchemaSigner` type can automatically select a signer among available certificates in the KeyChain.
diff --git a/pkg/trust-schema/lvs/compile.py b/pkg/trust-schema/lvs/compile.py
new file mode 100644
index 00000000..7eed3dac
--- /dev/null
+++ b/pkg/trust-schema/lvs/compile.py
@@ -0,0 +1,8 @@
+#!/usr/bin/env python
+import sys
+
+import ndn.app_support.light_versec
+
+lvs_text = sys.stdin.read()
+lvs_model = ndn.app_support.light_versec.compile_lvs(lvs_text)
+sys.stdout.buffer.write(lvs_model.encode())