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Move and update Python examples from didkit (#6)
Also: - Fix CD - Add CI Related to didkit#308
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‎.github/workflows/ci.yml‎

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name: CI
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on: push
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jobs:
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CI:
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v2
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- uses: actions/setup-python@v2
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with:
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python-version: "3.10"
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- name: Build Wheel
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uses: messense/maturin-action@v1
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with:
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manylinux: off
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args: --find-interpreter
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- uses: abatilo/[email protected]
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- name: Run Tests
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working-directory: pydidkit_tests
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run: |
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curl -sSL https://raw.githubusercontent.com/python-poetry/poetry/master/get-poetry.py | python -
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poetry install
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poetry run pytest

‎.github/workflows/release.yml‎

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name: CI/CD
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name: CD
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on:
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push:
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uses: messense/maturin-action@v1
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with:
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target: ${{ matrix.target }}
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args: --release --out dist --no-sdist
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- name: Install built wheel
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if: matrix.target == 'x64'
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run: |
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pip install didkit --no-index --find-links dist --force-reinstall
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python -c "import didkit"
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args: --release -o dist --find-interpreter
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- name: Upload wheels
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uses: actions/upload-artifact@v2
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with:
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uses: messense/maturin-action@v1
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with:
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target: ${{ matrix.target }}
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args: --release --out dist --no-sdist
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- name: Install built wheel
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if: matrix.target == 'x64'
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run: |
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pip install didkit --no-index --find-links dist --force-reinstall
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python -c "import didkit"
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args: --release -o dist --find-interpreter
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- name: Upload wheels
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uses: actions/upload-artifact@v2
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with:
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with:
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target: ${{ matrix.target }}
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manylinux: auto
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args: --release --out dist
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- name: Install built wheel
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if: matrix.target == 'x86_64'
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run: |
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pip install didkit --no-index --find-links dist --force-reinstall
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python -c "import didkit"
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args: --release -o dist --find-interpreter
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- name: Upload wheels
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uses: actions/upload-artifact@v2
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with:

‎Cargo.toml‎

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@@ -20,8 +20,8 @@ crate-type = ["cdylib"]
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didkit_core = { version = "0.4", default-features = false, features = ["secp256k1", "p256", "no-ring"], package = "didkit" }
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serde_json = "1.0"
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pyo3 = { version = "0.15", features = ["extension-module"] }
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pyo3-asyncio = { version = "0.15", features = ["tokio-runtime"] }
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pyo3 = { version = "0.16", features = ["extension-module"] }
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pyo3-asyncio = { version = "0.16", features = ["tokio-runtime"] }
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tokio = "1.17"
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[build-dependencies]

‎examples/python-flask/.gitignore‎

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key.jwk
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**/__pycache__/
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dist

‎examples/python-flask/README.md‎

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# Flask Example
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This project demonstrates use of verifiable credentials and presentation for an
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application.
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## Dependencies
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- Poetry ([installation instructions](https://python-poetry.org/docs/#installation))
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- Python 3.7 or higher
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### Python dependencies
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```bash
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$ poetry install
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```
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## Running
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```bash
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$ poetry run main
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```

‎examples/python-flask/didkit_flask/__init__.py‎

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__version__ = "0.1.0"

‎examples/python-flask/didkit_flask/issue_credential.py‎

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import json
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import uuid
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from datetime import datetime, timedelta
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from didkit import issue_credential, key_to_did, key_to_verification_method
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async def req_issue_vc(request):
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with open("key.jwk", "r") as f:
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key = f.readline()
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f.close()
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did_key = request.form.get("subject_id", key_to_did("key", key))
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verification_method = await key_to_verification_method("key", key)
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issuance_date = datetime.utcnow().replace(microsecond=0)
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expiration_date = issuance_date + timedelta(weeks=24)
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credential = {
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"id": "urn:uuid:" + uuid.uuid4().__str__(),
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"@context": [
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"https://www.w3.org/2018/credentials/v1",
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"https://www.w3.org/2018/credentials/examples/v1",
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],
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"type": ["VerifiableCredential"],
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"issuer": did_key,
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"issuanceDate": issuance_date.isoformat() + "Z",
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"expirationDate": expiration_date.isoformat() + "Z",
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"credentialSubject": {
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"@context": [{"username": "https://schema.org/Text"}],
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"id": "urn:uuid:" + uuid.uuid4().__str__(),
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"username": "Someone",
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},
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}
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didkit_options = {
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"proofPurpose": "assertionMethod",
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"verificationMethod": verification_method,
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}
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credential = await issue_credential(
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credential.__str__().replace("'", '"'),
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didkit_options.__str__().replace("'", '"'),
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key,
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)
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return json.loads(credential)

‎examples/python-flask/didkit_flask/main.py‎

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import errno
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import json
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import os
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from socket import AF_INET, SOCK_DGRAM, socket
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from didkit import generate_ed25519_key
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from flask import Flask, jsonify, render_template, request
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from flask_qrcode import QRcode
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from didkit_flask.issue_credential import req_issue_vc
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app = Flask(__name__)
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qrcode = QRcode(app)
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@app.route("/")
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def index():
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s = socket(AF_INET, SOCK_DGRAM)
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try:
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s.connect(("10.255.255.255", 1))
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IP = s.getsockname()[0]
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except Exception:
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IP = "127.0.0.1"
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finally:
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s.close()
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url = (
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(request.is_secure and "https://" or "http://")
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+ IP
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+ ":"
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+ request.host.split(":")[-1]
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+ "/wallet"
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)
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return render_template("index.html", url=url)
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@app.route("/credential", methods=["GET", "POST"])
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async def credential():
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credential = json.dumps(await req_issue_vc(request), indent=2, sort_keys=True)
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return render_template("credential.html", credential=credential)
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@app.route("/wallet", methods=["GET", "POST"])
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async def wallet():
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credential = await req_issue_vc(request)
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if request.method == "GET":
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return jsonify({"type": "CredentialOffer", "credentialPreview": credential})
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elif request.method == "POST":
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return jsonify(credential)
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def main():
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flags = os.O_CREAT | os.O_EXCL | os.O_WRONLY
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try:
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file_handle = os.open("key.jwk", flags)
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except OSError as e:
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if e.errno == errno.EEXIST:
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pass
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else:
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raise
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else:
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with os.fdopen(file_handle, "w") as file_obj:
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file_obj.write(generate_ed25519_key())
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app.run(host="0.0.0.0", port=5001)

‎examples/python-flask/didkit_flask/templates/credential.html‎

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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<link href="https://unpkg.com/tailwindcss@^2/dist/tailwind.min.css" rel="stylesheet">
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<title>DIDKit Django</title>
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</head>
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<body class="h-screen w-screen flex">
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<pre class="whitespace-pre-wrap m-auto">{{ credential }}</pre>
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</body>
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</html>

‎examples/python-flask/didkit_flask/templates/index.html‎

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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<link href="https://unpkg.com/tailwindcss@^2/dist/tailwind.min.css" rel="stylesheet">
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<title>DIDKit Django</title>
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</head>
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<body class="flex flex-col items-center justify-center h-screen w-screen">
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<form class="flex items-center justify-center mb-4" method="post" action="/credential">
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<input type="text" placeholder="Enter your DID:" class="h-12 p-4 border border-blue-900 rounded mr-4" name="subject_id" />
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<button
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class="h-12 p-2 border border-blue-900 rounded"
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type="submit"
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>
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Get credential
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</button>
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</form>
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<p>or scan the QRCode bellow with your wallet. i.e: Credible</p>
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<div class="my-8"><img src={{ qrcode(url) }} class="w-32 h-32"></div>
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<p>or</p>
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<a href="/credential">
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<button
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class="h-12 p-2 border mt-6 border-blue-900 rounded"
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type="submit"
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>
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Get server issued credential
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</button>
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</a>
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</body>
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</html>

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