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api: scep: drop usage of global authority import

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This commit is contained in:
Priit Laes 2018-02-03 12:53:19 +02:00
parent 239538371f
commit 1cfb1b3293
2 changed files with 14 additions and 11 deletions
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2
certidude/api/__init__.py
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@ -255,7 +255,7 @@ def certidude_app(log_handlers=[]):
# Add SCEP handler if we have any whitelisted subnets
if config.SCEP_SUBNETS:
from .scep import SCEPResource
app.add_route("/api/scep/", SCEPResource())
app.add_route("/api/scep/", SCEPResource(authority))
# Add sink for serving static files
app.add_sink(StaticResource(os.path.join(__file__, "..", "..", "static")))

23
certidude/api/scep.py
View File

@ -5,7 +5,7 @@ from asn1crypto import cms, algos, x509
from asn1crypto.core import ObjectIdentifier, SetOf, PrintableString
from base64 import b64decode, b64encode
from certbuilder import pem_armor_certificate
from certidude import authority, push, config
from certidude import push, config
from certidude.firewall import whitelist_subnets
from oscrypto import keys, asymmetric, symmetric
from oscrypto.errors import SignatureError
@ -37,11 +37,14 @@ class SCEPBadTime(SCEPError): code = 3
class SCEPBadCertId(SCEPError): code = 4
class SCEPResource(object):
def __init__(self, authority):
self.authority = authority
@whitelist_subnets(config.SCEP_SUBNETS)
def on_get(self, req, resp):
operation = req.get_param("operation", required=True)
if operation.lower() == "getcacert":
resp.body = keys.parse_certificate(authority.certificate_buf).dump()
resp.body = keys.parse_certificate(self.authority.certificate_buf).dump()
resp.append_header("Content-Type", "application/x-x509-ca-cert")
return
@ -120,17 +123,17 @@ class SCEPResource(object):
encrypted_content = encrypted_content_info['encrypted_content'].native
recipient, = encrypted_envelope['recipient_infos']
if recipient.native["rid"]["serial_number"] != authority.certificate.serial_number:
if recipient.native["rid"]["serial_number"] != self.authority.certificate.serial_number:
raise SCEPBadCertId()
# Since CA private key is not directly readable here, we'll redirect it to signer socket
key = asymmetric.rsa_pkcs1v15_decrypt(
authority.private_key,
self.authority.private_key,
recipient.native["encrypted_key"])
if len(key) == 8: key = key * 3 # Convert DES to 3DES
buf = symmetric.tripledes_cbc_pkcs5_decrypt(key, encrypted_content, iv)
_, _, common_name = authority.store_request(buf, overwrite=True)
cert, buf = authority.sign(common_name, overwrite=True)
_, _, common_name = self.authority.store_request(buf, overwrite=True)
cert, buf = self.authority.sign(common_name, overwrite=True)
signed_certificate = asymmetric.load_certificate(buf)
content = signed_certificate.asn1.dump()
@ -242,14 +245,14 @@ class SCEPResource(object):
'version': "v1",
'sid': cms.SignerIdentifier({
'issuer_and_serial_number': cms.IssuerAndSerialNumber({
'issuer': authority.certificate.issuer,
'serial_number': authority.certificate.serial_number,
'issuer': self.authority.certificate.issuer,
'serial_number': self.authority.certificate.serial_number,
}),
}),
'digest_algorithm': algos.DigestAlgorithm({'algorithm': "sha1"}),
'signature_algorithm': algos.SignedDigestAlgorithm({'algorithm': "rsassa_pkcs1v15"}),
'signature': asymmetric.rsa_pkcs1v15_sign(
authority.private_key,
self.authority.private_key,
b"\x31" + attrs.dump()[1:],
"sha1"
)
@ -260,7 +263,7 @@ class SCEPResource(object):
'content_type': "signed_data",
'content': cms.SignedData({
'version': "v1",
'certificates': [authority.certificate],
'certificates': [self.authority.certificate],
'digest_algorithms': [cms.DigestAlgorithm({
'algorithm': "sha1"
})],