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Lauri Võsandi 2015-07-12 22:22:10 +03:00
parent 6728f4131c
commit 0af381fc46
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55
.gitignore vendored Normal file
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# Byte-compiled / optimized / DLL files
__pycache__/
*.py[cod]
.goutputstream*
# C extensions
*.so
# Distribution / packaging
.Python
env/
build/
develop-eggs/
dist/
downloads/
eggs/
lib/
lib64/
parts/
sdist/
var/
*.egg-info/
.installed.cfg
*.egg
# PyInstaller
# Usually these files are written by a python script from a template
# before PyInstaller builds the exe, so as to inject date/other infos into it.
*.manifest
*.spec
# Installer logs
pip-log.txt
pip-delete-this-directory.txt
# Unit test / coverage reports
htmlcov/
.tox/
.coverage
.cache
nosetests.xml
coverage.xml
# Translations
*.mo
*.pot
# Django stuff:
*.log
# Sphinx documentation
docs/_build/
# PyBuilder
target/

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MANIFEST.in Normal file
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include README.rst
include certidude/templates/*.html
include certidude/templates/*.svg

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README.rst Normal file
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Certidude
=========
Certidude is a novel X.509 Certificate Authority management tool aiming to
support PKCS#11 and in far future WebCrypto
Install
-------
To install Certidude:
.. code:: bash
apt-get install python3-openssl
pip3 install certidude
Setting up CA
--------------
Certidude can set up CA relatively easily:
.. code:: bash
certidude ca create /path/to/directory
Tweak command-line options until you meet your requirements and
finally insert corresponding segment to your /etc/ssl/openssl.cnf
Finally serve the certificate authority via web:
.. code:: bash
certidude serve

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certidude/__init__.py Normal file
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196
certidude/api.py Normal file
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import re
import falcon
import os
import json
import types
from datetime import datetime, date
from OpenSSL import crypto
from jinja2 import Environment, PackageLoader
env = Environment(loader=PackageLoader('certidude', 'templates'))
RE_HOSTNAME = "^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]*[A-Za-z0-9])$"
def omit(**kwargs):
return dict([(key,value) for (key, value) in kwargs.items() if value])
def pop_certificate_authority(func):
def wrapped(self, req, resp, *args, **kwargs):
kwargs["ca"] = self.config.instantiate_authority(kwargs["ca"])
return func(self, req, resp, *args, **kwargs)
return wrapped
def validate_common_name(func):
def wrapped(*args, **kwargs):
if not re.match(RE_HOSTNAME, kwargs["cn"]):
raise falcon.HTTPBadRequest("Invalid CN", "Common name supplied with request didn't pass the validation regex")
return func(*args, **kwargs)
return wrapped
class MyEncoder(json.JSONEncoder):
def default(self, obj):
if isinstance(obj, datetime):
return obj.strftime('%Y-%m-%dT%H:%M:%S.%f')[:-3] + "Z"
if isinstance(obj, date):
return obj.strftime('%Y-%m-%d')
if isinstance(obj, map):
return tuple(obj)
if isinstance(obj, types.GeneratorType):
return tuple(obj)
return json.JSONEncoder.default(self, obj)
def serialize(func):
"""
Falcon response serialization
"""
def wrapped(instance, req, resp, **kwargs):
assert not req.get_param("unicode") or req.get_param("unicode") == u"✓", "Unicode sanity check failed"
resp.set_header("Cache-Control", "no-cache, no-store, must-revalidate");
resp.set_header("Pragma", "no-cache");
resp.set_header("Expires", "0");
r = func(instance, req, resp, **kwargs)
if not resp.body:
if not req.client_accepts_json:
raise falcon.HTTPUnsupportedMediaType(
'This API only supports the JSON media type.',
href='http://docs.examples.com/api/json')
resp.set_header('Content-Type', 'application/json')
resp.body = json.dumps(r, cls=MyEncoder)
return r
return wrapped
def templatize(path):
template = env.get_template(path)
def wrapper(func):
def wrapped(instance, req, resp, **kwargs):
assert not req.get_param("unicode") or req.get_param("unicode") == u"✓", "Unicode sanity check failed"
r = func(instance, req, resp, **kwargs)
if not resp.body:
if req.get_header("Accept") == "application/json":
resp.set_header("Cache-Control", "no-cache, no-store, must-revalidate");
resp.set_header("Pragma", "no-cache");
resp.set_header("Expires", "0");
resp.set_header('Content-Type', 'application/json')
resp.body = json.dumps(r, cls=MyEncoder)
return r
else:
resp.set_header('Content-Type', 'text/html')
resp.body = template.render(request=req, **r)
return r
return wrapped
return wrapper
class CertificateAuthorityBase(object):
def __init__(self, config):
self.config = config
class SignedCertificateDetailResource(CertificateAuthorityBase):
@pop_certificate_authority
@validate_common_name
def on_get(self, req, resp, ca, cn):
path = os.path.join(ca.signed_dir, cn + ".pem")
if not os.path.exists(path):
raise falcon.HTTPNotFound()
resp.stream = open(path, "rb")
resp.append_header("Content-Disposition", "attachment; filename=%s.crt" % cn)
@pop_certificate_authority
@validate_common_name
def on_delete(self, req, resp, ca, cn):
ca.revoke(cn)
class SignedCertificateListResource(CertificateAuthorityBase):
@serialize
@pop_certificate_authority
@validate_common_name
def on_get(self, req, resp, ca):
for j in authority.get_signed():
yield omit(
key_type=j.key_type(),
key_length=j.key_length(),
subject=j.get_dn(),
issuer=j.get_issuer_dn(),
cn=j.subject.CN,
c=j.subject.C,
st=j.subject.ST,
l=j.subject.L,
o=j.subject.O,
ou=j.subject.OU,
fingerprint=j.get_pubkey_fingerprint())
class RequestDetailResource(CertificateAuthorityBase):
@pop_certificate_authority
@validate_common_name
def on_get(self, req, resp, ca, cn):
"""
Fetch certificate signing request as PEM
"""
path = os.path.join(ca.request_dir, cn + ".pem")
if not os.path.exists(path):
raise falcon.HTTPNotFound()
resp.stream = open(path, "rb")
resp.append_header("Content-Disposition", "attachment; filename=%s.csr" % cn)
@pop_certificate_authority
@validate_common_name
def on_patch(self, req, resp, ca, cn):
"""
Sign a certificate signing request
"""
path = os.path.join(ca.request_dir, cn + ".pem")
if not os.path.exists(path):
raise falcon.HTTPNotFound()
ca.sign(ca.get_request(cn))
resp.body = "Certificate successfully signed"
resp.status = falcon.HTTP_201
resp.location = os.path.join(req.relative_uri, "..", "..", "signed", cn)
class RequestListResource(CertificateAuthorityBase):
@serialize
@pop_certificate_authority
def on_get(self, req, resp, ca):
for j in ca.get_requests():
yield omit(
key_type=j.key_type(),
key_length=j.key_length(),
subject=j.get_dn(),
cn=j.subject.CN,
c=j.subject.C,
st=j.subject.ST,
l=j.subject.L,
o=j.subject.O,
ou=j.subject.OU,
fingerprint=j.get_pubkey_fingerprint())
@pop_certificate_authority
def on_post(self, req, resp, ca):
if req.get_header("Content-Type") != "application/pkcs10":
raise falcon.HTTPUnsupportedMediaType(
"This API call accepts only application/pkcs10 content type")
# POTENTIAL SECURITY HOLE HERE!
# Should we sanitize input before we handle it to SSL libs?
try:
csr = crypto.load_certificate_request(
crypto.FILETYPE_PEM, req.stream.read(req.content_length))
except crypto.Error:
raise falcon.HTTPBadRequest("Invalid CSR", "Failed to parse request body as PEM")
common_name = csr.get_subject().CN
if not re.match(RE_HOSTNAME, common_name):
raise falcon.HTTPBadRequest("Invalid CN", "Common name supplied with CSR did not match validation regex")
path = os.path.join(ca.request_dir, common_name + ".pem")
with open(path, "wb") as fh:
fh.write(crypto.dump_certificate_request(
crypto.FILETYPE_PEM, csr))
class CertificateAuthorityResource(CertificateAuthorityBase):
@templatize("index.html")
def on_get(self, req, resp, ca):
return {
"authority": self.config.instantiate_authority(ca)}

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#!/usr/bin/python3
# coding: utf-8
import socket
import click
import os
import time
import os
import re
from datetime import datetime
from OpenSSL import crypto
from certidude.wrappers import CertificateAuthorityConfig, \
CertificateAuthority, SerialCounter, Certificate, subject2dn
# Big fat warning:
# m2crypto overflows around 2030 because on 32-bit systems
# m2crypto does not support hardware engine support (?)
# m2crypto CRL object is pretty much useless
# pyopenssl has no straight-forward methods for getting RSA key modulus
# http://www.mad-hacking.net/documentation/linux/security/ssl-tls/creating-ca.xml
config = CertificateAuthorityConfig("/etc/ssl/openssl.cnf")
NOW = datetime.utcnow().replace(tzinfo=None)
@click.command("create", help="Set up Certificate Authority in a directory")
@click.option("--parent", "-p", help="Parent CA, none by default")
@click.option("--common-name", "-cn", default=socket.gethostname(), help="Common name, hostname by default")
@click.option("--country", "-c", default="ee", help="Country, Estonia by default")
@click.option("--state", "-s", default="Harjumaa", help="State or country, Harjumaa by default")
@click.option("--locality", "-l", default="Tallinn", help="City or locality, Tallinn by default")
@click.option("--lifetime", default=20, help="Lifetime in years")
@click.option("--organization", "-o", default="Example LLC", help="Company or organization name")
@click.option("--organizational-unit", "-ou", default="Certification Department")
@click.option("--crl-age", default=1, help="CRL expiration age, 1 day by default")
@click.option("--pkcs11", default=False, is_flag=True, help="Use PKCS#11 token instead of files")
@click.argument("directory")
def ca_create(parent, country, state, locality, organization, organizational_unit, common_name, directory, crl_age, lifetime, pkcs11):
click.echo("Generating 4096-bit RSA key...")
if pkcs11:
raise NotImplementedError("Hardware token support not yet implemented!")
else:
key = crypto.PKey()
key.generate_key(crypto.TYPE_RSA, 4096)
slug = os.path.basename(directory)
crl_distribution_points = "URI:http://%s/api/%s/revoked/" % (common_name, slug)
ca = crypto.X509()
ca.set_version(3)
ca.set_serial_number(1)
ca.get_subject().CN = common_name
ca.get_subject().C = country
ca.get_subject().ST = state
ca.get_subject().L = locality
ca.get_subject().O = organization
ca.get_subject().OU = organizational_unit
ca.gmtime_adj_notBefore(0)
ca.gmtime_adj_notAfter(lifetime * 365 * 24 * 60 * 60)
ca.set_issuer(ca.get_subject())
ca.set_pubkey(key)
ca.add_extensions([
crypto.X509Extension(
b"basicConstraints",
True,
b"CA:TRUE, pathlen:0"),
crypto.X509Extension(
b"keyUsage",
True,
b"keyCertSign, cRLSign"),
crypto.X509Extension(
b"subjectKeyIdentifier",
False,
b"hash",
subject = ca),
crypto.X509Extension(
b"crlDistributionPoints",
False,
crl_distribution_points.encode("ascii"))
])
click.echo("Signing %s..." % subject2dn(ca.get_subject()))
ca.sign(key, "sha1")
if not os.path.exists(directory):
os.makedirs(directory)
for subdir in ("signed", "requests", "revoked"):
if not os.path.exists(os.path.join(directory, subdir)):
os.mkdir(os.path.join(directory, subdir))
with open(os.path.join(directory, "ca_key.pem"), "wb") as fh:
fh.write(crypto.dump_privatekey(crypto.FILETYPE_PEM, key))
with open(os.path.join(directory, "ca_crt.pem"), "wb") as fh:
fh.write(crypto.dump_certificate(crypto.FILETYPE_PEM, ca))
with open(os.path.join(directory, "ca_crl.pem"), "wb") as fh:
crl = crypto.CRL()
fh.write(crl.export(ca, key, days=crl_age))
with open(os.path.join(directory, "serial"), "w") as fh:
fh.write("1")
click.echo()
click.echo("Add following to your /etc/ssl/openssl.cnf:")
click.echo()
click.echo("[CA_%s]" % slug)
click.echo("dir = %s" % directory)
click.echo("private_key = $dir/ca_key.pem")
click.echo("certificate = $dir/ca_crt.pem")
click.echo("new_certs_dir = $dir/requests/")
click.echo("revoked_certs_dir = $dir/revoked/")
click.echo("certs = $dir/signed/")
click.echo("crl = $dir/ca_crl.pem")
click.echo("serial = $dir/serial")
click.echo("crlDistributionPoints = %s" % crl_distribution_points)
click.echo()
click.echo("Use following commands to inspect the newly created files:")
click.echo()
click.echo(" openssl crl -inform PEM -text -noout -in %s" % os.path.join(directory, "ca_crl.pem"))
click.echo(" openssl x509 -in %s -text -noout" % os.path.join(directory, "ca_crt.pem"))
click.echo(" openssl rsa -in %s -check" % os.path.join(directory, "ca_key.pem"))
click.echo()
click.echo("Use following command to serve CA read-only:")
click.echo()
click.echo(" certidude serve")
@click.command("list", help="List Certificate Authorities")
def ca_list():
for ca in config.all_authorities():
click.echo("Certificate authority '%s'" % ca.certificate.get_dn())
if ca.certificate.not_before < NOW and ca.certificate.not_after > NOW:
click.echo(" ✓ Certificate valid %s" % (ca.certificate.not_after - NOW))
elif NOW > ca.certificate.not_after:
click.echo(" ✗ Certificate expired")
else:
click.echo(" ✗ Certificate authority not valid yet")
if os.path.exists(ca.private_key):
click.echo(" ✓ Private key %s okay" % ca.private_key)
else:
click.echo(" ✗ Private key %s does not exist" % ca.private_key)
if os.path.isdir(ca.signed_dir):
click.echo(" ✓ Signed certificates directory %s okay" % ca.signed_dir)
else:
click.echo(" ✗ Signed certificates directory %s okay" % ca.signed_dir)
click.echo(" Revoked certificates directory: %s" % ca.revoked_dir)
click.echo(" Revocation list: %s" % ca.revocation_list)
click.echo()
@click.command("list", help="List Certificate Authorities")
@click.argument("ca")
@config.pop_certificate_authority()
def cert_list(ca):
mapping = {}
click.echo("Listing certificates for: %s" % ca.certificate.subject.CN)
for serial, reason, timestamp in ca.get_revoked():
mapping[serial] = None, reason
for certificate in ca.get_signed():
mapping[certificate.serial] = certificate, None
for serial, (certificate, reason) in sorted(mapping.items(), key=lambda j:j[0]):
if not reason:
click.echo(" %03d. %s %s" % (serial, certificate.subject.CN, (certificate.not_after-NOW)))
else:
click.echo(" %03d. Revoked due to: %s" % (serial, reason))
for request in ca.get_requests():
click.echo(" ⌛ %s" % request.subject.CN)
@click.command("serve", help="Run built-in HTTP server")
@click.option("-u", "--user", default=None, help="Run as user")
@click.option("-p", "--port", default=80, help="Listen port")
@click.option("-l", "--listen", default="0.0.0.0", help="Listen address")
@click.option("-s", "--enable-signature", default=False, is_flag=True, help="Allow signing operations with private key of CA")
def serve(user, port, listen, enable_signature):
click.echo("Serving API at %s:%d" % (listen, port))
import pwd
import falcon
from wsgiref.simple_server import make_server, WSGIServer
from socketserver import ThreadingMixIn
from certidude.api import CertificateAuthorityResource, \
RequestDetailResource, RequestListResource, \
SignedCertificateDetailResource, SignedCertificateListResource
class ThreadingWSGIServer(ThreadingMixIn, WSGIServer):
pass
click.echo("Listening on %s:%d" % (listen, port))
app = falcon.API()
app.add_route("/api/{ca}/signed/{cn}/", SignedCertificateDetailResource(config))
app.add_route("/api/{ca}/signed/", SignedCertificateListResource(config))
app.add_route("/api/{ca}/request/{cn}/", RequestDetailResource(config))
app.add_route("/api/{ca}/request/", RequestListResource(config))
app.add_route("/api/{ca}/", CertificateAuthorityResource(config))
httpd = make_server(listen, port, app, ThreadingWSGIServer)
if user:
_, _, uid, gid, gecos, root, shell = pwd.getpwnam(user)
if uid == 0:
click.echo("Please specify unprivileged user")
exit(254)
click.echo("Switching to user %s (uid=%d, gid=%d)" % (user, uid, gid))
os.setgid(gid)
os.setuid(uid)
elif os.getuid() == 0:
click.echo("Warning: running as root, this is not reccommended!")
httpd.serve_forever()
@click.group(help="Certificate Authority management")
def ca(): pass
@click.group(help="Certificate management")
def cert(): pass
cert.add_command(cert_list)
ca.add_command(ca_create)
ca.add_command(ca_list)
@click.group()
def entry_point(): pass
entry_point.add_command(ca)
entry_point.add_command(cert)
entry_point.add_command(serve)

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<?xml version="1.0" encoding="utf-8"?>
<!-- License Agreement at http://iconmonstr.com/license/ -->
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
width="48px" height="48px" viewBox="0 0 512 512" style="enable-background:new 0 0 512 512;" xml:space="preserve">
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</svg>
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<?xml version="1.0" encoding="utf-8"?>
<!-- The icon can be used freely in both personal and commercial projects with no attribution required, but always appreciated.
You may NOT sub-license, resell, rent, redistribute or otherwise transfer the icon without express written permission from iconmonstr.com -->
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certidude/templates/index.html Normal file
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<!DOCTYPE html>
<html lang="en">
<head>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link href='http://fonts.googleapis.com/css?family=Ubuntu+Mono' rel='stylesheet' type='text/css'>
<link href='http://fonts.googleapis.com/css?family=Gentium' rel='stylesheet' type='text/css'>
<link href="//fonts.googleapis.com/css?family=PT+Sans+Narrow" rel="stylesheet" type="text/css">
<meta charset="utf-8"/>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>Certidude server</title>
<style type="text/css">
img {
max-width: 100%;
max-height: 100%;
}
ul {
list-style: none;
margin: 0;
padding: 0;
}
button, .button {
color: #000;
float: right;
border: 1pt solid #ccc;
background-color: #eee;
border-radius: 6px;
margin: 2px;
padding: 4px 8px;
box-sizing: border-box;
}
.monospace {
font-family: 'Ubuntu Mono', monospace;
font-size: 80%;
}
footer {
display: block;
color: #fff;
text-align: center;
}
a {
text-decoration: none;
color: #44c;
}
footer a {
color: #aaf;
}
html,body {
margin: 0;
padding: 0 0 1em 0;
}
body {
background: #222;
background-image: url('http://fc00.deviantart.net/fs71/i/2013/078/9/6/free_hexa_pattern_cc0_by_black_light_studio-d4ig12f.png');
background-position: center;
}
.comment {
color: #aaf;
}
table th, table td {
border: 1px solid #ccc;
padding: 2px;
}
h1, h2, th {
font-family: 'Gentium';
}
h1 {
text-align: center;
font-size: 22pt;
}
h2 {
font-size: 18pt;
}
h2 svg {
position: relative;
top: 16px;
}
p, td, footer, li, button {
font-family: 'PT Sans Narrow';
font-size: 14pt;
}
pre {
overflow: auto;
border: 1px solid #000;
background: #444;
color: #fff;
font-size: 12pt;
padding: 4px;
border-radius: 6px;
margin: 0 0;
}
#container {
margin: 1em;
background: #fff;
padding: 1em;
border-style: solid;
border-width: 2px;
border-color: #aaa;
border-radius: 10px;
}
li {
margin: 4px 0;
padding: 4px 0;
clear: both;
border-top: 1px dashed #ccc;
}
li .details {
opacity: 0.2;
}
li:hover .details {
opacity: 1.0;
}
</style>
</head>
<body>
<div id="container">
<h1>Submit signing request</h1>
{% set s = authority.certificate.subject %}
<p>To submit new certificate signing request:</p>
<pre>
export CN=$(hostname)
openssl genrsa -out $CN.key 4096
openssl req -new -sha256 -key $CN.key -out $CN.csr -subj "{% if s.C %}/C={{ s.C}}{% endif %}{% if s.ST %}/ST={{ s.ST}}{% endif %}{% if s.L %}/L={{s.L}}{% endif %}{% if s.O %}/O={{ s.O}}{% endif %}{% if s.OU %}/OU={{ s.OU}}{% endif %}/CN=$CN"
curl -H "Content-Type: application/pkcs10" -X POST -d "$(cat $CN.csr)" {{ request.url }}/request/
</pre>
<p>After signing the request</p>
<pre>
curl -f {{ request.url }}/signed/$CN > $CN.crt
</pre>
<h1>Pending requests</h1>
<ul>
{% for j in authority.get_requests() %}
<li>
{% include 'iconmonstr-time-13-icon.svg' %}
<span class="monospace">{{ j.get_dn() }}</span>
<span class="monospace details" title="SHA-1 of public key">{{ j.get_pubkey_fingerprint().upper() }}</span>
<a class="button" href="/api/{{authority.slug}}/request/{{j.subject.CN}}/">Fetch</a>
<button onClick="javascript:$.ajax({url:'/api/{{authority.slug}}/request/{{j.subject.CN}}/',type:'patch'});">Sign</button>
<button>Delete</button>
<br/>
<span>{{ j.key_length() }}-bit {{ j.key_type() }}</span>
</li>
{% endfor %}
</ul>
<h1>Signed certificates</h1>
<ul>
{% for j in authority.get_signed() | sort | reverse %}
<li>
{% include 'iconmonstr-certificate-15-icon.svg' %}
{{ j.serial}} <span class="monospace">{{ j.get_dn() }}</span>
<span class="monospace details" title="SHA-1 of public key">{{ j.get_pubkey_fingerprint() }}</span>
{{ j.key_length() }}-bit {{ j.key_type() }}
<a class="button" href="/api/{{authority.slug}}/signed/{{j.subject.CN}}/">Fetch</a>
<button onClick="javascript:$.ajax({url:'/api/{{authority.slug}}/signed/{{j.subject.CN}}/',type:'delete'});">Revoke</button>
{% for key, value in j.get_extensions() %}
{{key}}={{value}},
{% endfor %}
</li>
{% endfor %}
</ul>
<h1>Revoked certificates</h1>
<ul>
{% for serial, reason, timestamp in authority.get_revoked() %}
<li>{{ serial}} {{ reason }} {{ timestamp}} </li>
{% endfor %}
</ul>

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certidude/wrappers.py Normal file
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import os
from OpenSSL import crypto
from datetime import datetime
import hashlib
from Crypto.Util import asn1
import re
import itertools
from configparser import RawConfigParser
# https://jamielinux.com/docs/openssl-certificate-authority/
def subject2dn(subject):
bits = []
for j in "C", "S", "L", "O", "OU", "CN":
if getattr(subject, j, None):
bits.append("/%s=%s" % (j, getattr(subject, j)))
return "".join(bits)
class SerialCounter(object):
def __init__(self, filename):
self.path = filename
with open(filename, "r") as fh:
self.value = int(fh.read(), 16)
def increment(self):
self.value += 1
with open(self.path, "w") as fh:
fh.write("%04x" % self.value)
return self.value
class CertificateAuthorityConfig(object):
"""
Attempt to parse CA-s from openssl.cnf
"""
def __init__(self, *args):
self._config = RawConfigParser()
for arg in args:
self._config.readfp(itertools.chain(["[global]"], open(os.path.expanduser(arg))))
def instantiate_authority(self, slug):
section = "CA_" + slug
dirs = dict([(key, self._config.get(section, key)
if self._config.has_option(section, key) else "")
for key in ("dir", "certificate", "crl", "certs", "new_certs_dir", "serial", "private_key", "revoked_certs_dir")])
# Variable expansion, eg $dir
for key, value in dirs.items():
if "$" in value:
dirs[key] = re.sub(r'\$([a-z]+)', lambda m:dirs[m.groups()[0]], value)
dirs.pop("dir")
return CertificateAuthority(slug, **dirs)
def all_authorities(self):
for section in self._config:
if section.startswith("CA_"):
yield self.instantiate_authority(section[3:])
def pop_certificate_authority(self):
def wrapper(func):
def wrapped(*args, **kwargs):
slug = kwargs.pop("ca")
kwargs["ca"] = self.instantiate_authority(slug)
return func(*args, **kwargs)
return wrapped
return wrapper
class CertificateBase:
def get_issuer_dn(self):
return subject2dn(self.issuer)
def get_dn(self):
return subject2dn(self.subject)
def key_length(self):
return self._obj.get_pubkey().bits()
def key_type(self):
if self._obj.get_pubkey().type() == 6:
return "RSA"
else:
raise NotImplementedError()
def get_pubkey(self):
pub_asn1=crypto.dump_privatekey(crypto.FILETYPE_ASN1, self._obj.get_pubkey())
pub_der=asn1.DerSequence()
pub_der.decode(pub_asn1)
return pub_der[1]
def get_pubkey_hex(self):
h = "%x" % self.get_pubkey()
assert len(h) * 4 == self.key_length(), "%s is not %s" % (len(h)*4, self.key_length())
return ":".join(re.findall("..", "%x" % self.get_pubkey()))
def get_pubkey_fingerprint(self):
import binascii
return ":".join(re.findall("..", hashlib.sha1(binascii.unhexlify("%x" % self.get_pubkey())).hexdigest()))
class Certificate(CertificateBase):
def __init__(self, filename, authority=None):
self.path = os.path.realpath(filename)
try:
self._obj = crypto.load_certificate(crypto.FILETYPE_PEM, open(filename).read())
except crypto.Error:
click.echo("Failed to parse certificate: %s" % filename)
raise
self.not_before = datetime.strptime(self._obj.get_notBefore().decode("ascii"), "%Y%m%d%H%M%SZ")
self.not_after = datetime.strptime(self._obj.get_notAfter().decode("ascii"), "%Y%m%d%H%M%SZ")
self.subject = self._obj.get_subject()
self.issuer = self._obj.get_issuer()
self.serial = self._obj.get_serial_number()
self.authority = authority
self.subject_key_identifier = None
def get_extensions(self):
for i in range(1, self._obj.get_extension_count()):
ext = self._obj.get_extension(i)
yield ext.get_short_name(), str(ext)
def digest(self):
return self._obj.digest("md5").decode("ascii")
def __eq__(self, other):
return self.serial == other.serial
def __gt__(self, other):
return self.serial > other.serial
def __lt__(self, other):
return self.serial < other.serial
def __gte__(self, other):
return self.serial >= other.serial
def __lte__(self, other):
return self.serial <= other.serial
def lock_crl(func):
def wrapped(ca, *args, **kwargs):
# TODO: Implement actual locking!
try:
crl = crypto.load_crl(crypto.FILETYPE_PEM, open(ca.revocation_list).read())
except crypto.Error:
click.echo("Failed to parse CRL in %s" % ca.revocation_list)
raise
count = len(crl.get_revoked() or ())
retval = func(ca, crl, *args, **kwargs)
if count != len(crl.get_revoked() or ()):
click.echo("Updating CRL")
partial = ca.revocation_list + ".part"
with open(partial, "wb") as fh:
fh.write(crl.export(
ca.certificate._obj,
crypto.load_privatekey(crypto.FILETYPE_PEM, open(ca.private_key).read()),
crypto.FILETYPE_PEM))
os.rename(partial, ca.revocation_list)
return retval
return wrapped
class Request(CertificateBase):
def __init__(self, request_path):
self.path = request_path
self._obj = crypto.load_certificate_request(crypto.FILETYPE_PEM, open(self.path).read())
self.subject = self._obj.get_subject()
"""
pub_asn1=crypto.dump_privatekey(crypto.FILETYPE_ASN1, self._obj.get_pubkey())
pub_der=asn1.DerSequence()
pub_der.decode(pub_asn1)
n=pub_der[1]
# Get the modulus
print("public modulus: %x" % n)
import binascii
self.sha_hash = hashlib.sha1(binascii.unhexlify("%x" % n)).hexdigest()
"""
def __repr__(self):
return "Request(%s)" % repr(self.path)
class CertificateAuthority(object):
def __init__(self, slug, certificate, crl, certs, new_certs_dir, revoked_certs_dir=None, serial=None, private_key=None):
self.slug = slug
self.revocation_list = crl
self.signed_dir = certs
self.request_dir = new_certs_dir
self.revoked_dir = revoked_certs_dir
self.private_key = private_key
if isinstance(certificate, str):
self.certificate = Certificate(certificate, self)
else:
self.certificate = certificate
if isinstance(serial, str):
self.serial_counter=SerialCounter(serial)
else:
self.serial_counter=serial
def __repr__(self):
return "CertificateAuthority(slug=%s)" % repr(self.slug)
def get_request(self, cn):
return Request(os.path.join(self.request_dir, cn + ".pem"))
def get_certificate(self, cn):
return Certificate(os.path.join(self.signed_dir, cn + ".pem"))
@lock_crl
def revoke(self, crl, cn):
certificate = self.get_certificate(cn)
revocation = crypto.Revoked()
revocation.set_rev_date(datetime.now().strftime("%Y%m%d%H%M%SZ").encode("ascii"))
revocation.set_reason(b"keyCompromise")
revocation.set_serial(("%x" % certificate.serial).encode("ascii"))
if self.revoked_dir:
os.rename(certificate.path, self.revoked_dir)
else:
os.unlink(certificate.path)
crl.add_revoked(revocation)
@lock_crl
def get_revoked(self, crl):
for revocation in crl.get_revoked() or ():
yield int(revocation.get_serial(), 16), \
revocation.get_reason().decode("ascii"), \
datetime.strptime(revocation.get_rev_date().decode("ascii"), "%Y%m%d%H%M%SZ")
def get_signed(self):
for root, dirs, files in os.walk(self.signed_dir):
for filename in files:
yield Certificate(os.path.join(root, filename))
break
def get_requests(self):
for root, dirs, files in os.walk(self.request_dir):
for filename in files:
yield Request(os.path.join(root, filename))
def sign(self, request, lifetime=5*365*24*60*60):
cert = crypto.X509()
cert.add_extensions([
crypto.X509Extension(
b"basicConstraints",
True,
b"CA:FALSE, pathlen:0"),
crypto.X509Extension(
b"keyUsage",
True,
b"digitalSignature, keyEncipherment"),
crypto.X509Extension(
b"subjectKeyIdentifier",
False,
b"hash",
subject = self.certificate._obj),
crypto.X509Extension(
b"authorityKeyIdentifier",
False,
b"keyid:always",
issuer = self.certificate._obj)])
cert.set_pubkey(request._obj.get_pubkey())
cert.set_subject(request._obj.get_subject())
cert.gmtime_adj_notBefore(0)
cert.gmtime_adj_notAfter(lifetime)
cert.set_serial_number(self.serial_counter.increment())
pkey = crypto.load_privatekey(crypto.FILETYPE_PEM, open(self.private_key).read())
cert.sign(pkey, 'sha1')
path = os.path.join(self.signed_dir, request.subject.CN + ".pem")
assert not os.path.exists(path), "File %s already exists!" % path
buf = crypto.dump_certificate(crypto.FILETYPE_PEM, cert)
with open(path + ".part", "wb") as fh:
fh.write(buf)
os.rename(path + ".part", path)
click.echo("Wrote certififcate to: %s" % path)
os.unlink(request.path)
click.echo("Deleted request: %s" % request.path)

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misc/certidude Normal file
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#!/usr/bin/env python3
from certidude.cli import entry_point
if __name__ == "__main__":
entry_point()

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setup.py Normal file
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#!/usr/bin/python
# coding: utf-8
import os
from setuptools import setup
setup(
name = "certidude",
version = "0.1.2",
author = u"Lauri Võsandi",
author_email = "lauri.vosandi@gmail.com",
description = "Certidude is a novel X.509 Certificate Authority management tool aiming to support PKCS#11 and in far future WebCrypto.",
license = "MIT",
keywords = "falcon http jinja2 x509 pkcs11 webcrypto",
url = "http://github.com/laurivosandi/certidude",
packages=[
"certidude",
],
long_description=open("README.rst").read(),
install_requires=[
"click",
"falcon",
"jinja2"
],
scripts=[
"misc/certidude"
],
include_package_data = True,
package_data={
"certidude": ["certidude/templates/*.html"],
},
classifiers=[
"Development Status :: 4 - Beta",
"Environment :: Console",
"Intended Audience :: Developers",
"Intended Audience :: System Administrators",
"License :: Freely Distributable",
"License :: OSI Approved :: MIT License",
"Natural Language :: English",
"Operating System :: POSIX :: Linux",
"Programming Language :: Python",
"Programming Language :: Python :: 3 :: Only",
],
)