openmedialibrary/oml/node/cert.py
2014-09-03 00:38:34 +02:00

45 lines
1.6 KiB
Python

# -*- coding: utf-8 -*-
# vi:si:et:sw=4:sts=4:ts=4
import hashlib
import os
import OpenSSL
import settings
def get_fingerprint():
with open(settings.ssl_cert_path) as fd:
data = fd.read()
cert = OpenSSL.crypto.load_certificate(OpenSSL.crypto.FILETYPE_PEM, data)
return hashlib.sha1(OpenSSL.crypto.dump_certificate(OpenSSL.crypto.FILETYPE_ASN1, cert)).hexdigest()
def generate_ssl():
key = OpenSSL.crypto.PKey()
key.generate_key(OpenSSL.crypto.TYPE_RSA, 2048)
with open(settings.ssl_key_path, 'wb') as fd:
os.chmod(settings.ssl_key_path, 0o600)
fd.write(OpenSSL.crypto.dump_privatekey(OpenSSL.crypto.FILETYPE_PEM, key))
os.chmod(settings.ssl_key_path, 0o400)
ca = OpenSSL.crypto.X509()
ca.set_version(2)
ca.set_serial_number(1)
ca.get_subject().CN = settings.USER_ID
ca.gmtime_adj_notBefore(0)
ca.gmtime_adj_notAfter(24 * 60 * 60)
ca.set_issuer(ca.get_subject())
ca.set_pubkey(key)
ca.add_extensions([
OpenSSL.crypto.X509Extension("basicConstraints", True, "CA:TRUE, pathlen:0"),
OpenSSL.crypto.X509Extension("nsCertType", True, "sslCA"),
OpenSSL.crypto.X509Extension("extendedKeyUsage", True,
"serverAuth,clientAuth,emailProtection,timeStamping,msCodeInd,msCodeCom,msCTLSign,msSGC,msEFS,nsSGC"),
OpenSSL.crypto.X509Extension("keyUsage", False, "keyCertSign, cRLSign"),
OpenSSL.crypto.X509Extension("subjectKeyIdentifier", False, "hash", subject=ca),
])
ca.sign(key, "sha1")
with open(settings.ssl_cert_path, 'wb') as fd:
fd.write(OpenSSL.crypto.dump_certificate(OpenSSL.crypto.FILETYPE_PEM, ca))
return get_fingerprint()