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Add key_size option to define rsa key size (#3657)

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This commit is contained in:
vin01 2019-09-30 17:19:52 +00:00 committed by Thomas Kriechbaumer
parent 7ef91f46a3
commit 93f9e30728
6 changed files with 30 additions and 18 deletions
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12
mitmproxy/certs.py
View File

@ -36,9 +36,9 @@ rD693XKIHUCWOjMh1if6omGXKHH40QuME2gNa50+YPn1iYDl88uDbbMCAQI=
"""
def create_ca(organization, cn, exp):
def create_ca(organization, cn, exp, key_size):
key = OpenSSL.crypto.PKey()
key.generate_key(OpenSSL.crypto.TYPE_RSA, 2048)
key.generate_key(OpenSSL.crypto.TYPE_RSA, key_size)
cert = OpenSSL.crypto.X509()
cert.set_serial_number(int(time.time() * 10000))
cert.set_version(2)
@ -182,10 +182,10 @@ class CertStore:
return dh
@classmethod
def from_store(cls, path, basename):
def from_store(cls, path, basename, key_size):
ca_path = os.path.join(path, basename + "-ca.pem")
if not os.path.exists(ca_path):
key, ca = cls.create_store(path, basename)
key, ca = cls.create_store(path, basename, key_size)
else:
with open(ca_path, "rb") as f:
raw = f.read()
@ -215,14 +215,14 @@ class CertStore:
os.umask(original_umask)
@staticmethod
def create_store(path, basename, organization=None, cn=None, expiry=DEFAULT_EXP):
def create_store(path, basename, key_size, organization=None, cn=None, expiry=DEFAULT_EXP):
if not os.path.exists(path):
os.makedirs(path)
organization = organization or basename
cn = cn or basename
key, ca = create_ca(organization=organization, cn=cn, exp=expiry)
key, ca = create_ca(organization=organization, cn=cn, exp=expiry, key_size=key_size)
# Dump the CA plus private key
with CertStore.umask_secret(), open(os.path.join(path, basename + "-ca.pem"), "wb") as f:
f.write(

7
mitmproxy/options.py
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@ -7,6 +7,7 @@ from mitmproxy.net import tls
CONF_DIR = "~/.mitmproxy"
LISTEN_PORT = 8080
CONTENT_VIEW_LINES_CUTOFF = 512
KEY_SIZE = 2048
class Options(optmanager.OptManager):
@ -173,5 +174,11 @@ class Options(optmanager.OptManager):
speedup flows browsing.
"""
)
self.add_option(
"key_size", int, KEY_SIZE,
"""
TLS key size for certificates and CA.
"""
)
self.update(**kwargs)

4
mitmproxy/proxy/config.py
View File

@ -64,9 +64,11 @@ class ProxyConfig:
"Certificate Authority parent directory does not exist: %s" %
os.path.dirname(certstore_path)
)
key_size = options.key_size
self.certstore = certs.CertStore.from_store(
certstore_path,
CONF_BASENAME
CONF_BASENAME,
key_size
)
for c in options.certs:

1
mitmproxy/tools/cmdline.py
View File

@ -68,6 +68,7 @@ def common_options(parser, opts):
group = parser.add_argument_group("SSL")
opts.make_parser(group, "certs", metavar="SPEC")
opts.make_parser(group, "ssl_insecure", short="k")
opts.make_parser(group, "key_size", metavar="KEY_SIZE")
# Client replay
group = parser.add_argument_group("Client Replay")

4
pathod/pathod.py
View File

@ -21,6 +21,7 @@ CONFDIR = "~/.mitmproxy"
CERTSTORE_BASENAME = "mitmproxy"
CA_CERT_NAME = "mitmproxy-ca.pem"
DEFAULT_CRAFT_ANCHOR = "/p/"
KEY_SIZE = 2048
logger = logging.getLogger('pathod')
@ -54,7 +55,8 @@ class SSLOptions:
self.alpn_select = alpn_select
self.certstore = mcerts.CertStore.from_store(
os.path.expanduser(confdir),
CERTSTORE_BASENAME
CERTSTORE_BASENAME,
KEY_SIZE
)
for i in certs or []:
self.certstore.add_cert_file(*i)

20
test/mitmproxy/test_certs.py
View File

@ -35,20 +35,20 @@ from ..conftest import skip_windows
class TestCertStore:
def test_create_explicit(self, tmpdir):
ca = certs.CertStore.from_store(str(tmpdir), "test")
ca = certs.CertStore.from_store(str(tmpdir), "test", 2048)
assert ca.get_cert(b"foo", [])
ca2 = certs.CertStore.from_store(str(tmpdir), "test")
ca2 = certs.CertStore.from_store(str(tmpdir), "test", 2048)
assert ca2.get_cert(b"foo", [])
assert ca.default_ca.get_serial_number() == ca2.default_ca.get_serial_number()
def test_create_no_common_name(self, tmpdir):
ca = certs.CertStore.from_store(str(tmpdir), "test")
ca = certs.CertStore.from_store(str(tmpdir), "test", 2048)
assert ca.get_cert(None, [])[0].cn is None
def test_create_tmp(self, tmpdir):
ca = certs.CertStore.from_store(str(tmpdir), "test")
ca = certs.CertStore.from_store(str(tmpdir), "test", 2048)
assert ca.get_cert(b"foo.com", [])
assert ca.get_cert(b"foo.com", [])
assert ca.get_cert(b"*.foo.com", [])
@ -57,7 +57,7 @@ class TestCertStore:
assert r[1] == ca.default_privatekey
def test_sans(self, tmpdir):
ca = certs.CertStore.from_store(str(tmpdir), "test")
ca = certs.CertStore.from_store(str(tmpdir), "test", 2048)
c1 = ca.get_cert(b"foo.com", [b"*.bar.com"])
ca.get_cert(b"foo.bar.com", [])
# assert c1 == c2
@ -65,13 +65,13 @@ class TestCertStore:
assert not c1 == c3
def test_sans_change(self, tmpdir):
ca = certs.CertStore.from_store(str(tmpdir), "test")
ca = certs.CertStore.from_store(str(tmpdir), "test", 2048)
ca.get_cert(b"foo.com", [b"*.bar.com"])
cert, key, chain_file = ca.get_cert(b"foo.bar.com", [b"*.baz.com"])
assert b"*.baz.com" in cert.altnames
def test_expire(self, tmpdir):
ca = certs.CertStore.from_store(str(tmpdir), "test")
ca = certs.CertStore.from_store(str(tmpdir), "test", 2048)
ca.STORE_CAP = 3
ca.get_cert(b"one.com", [])
ca.get_cert(b"two.com", [])
@ -95,8 +95,8 @@ class TestCertStore:
assert (b"four.com", ()) in ca.certs
def test_overrides(self, tmpdir):
ca1 = certs.CertStore.from_store(str(tmpdir.join("ca1")), "test")
ca2 = certs.CertStore.from_store(str(tmpdir.join("ca2")), "test")
ca1 = certs.CertStore.from_store(str(tmpdir.join("ca1")), "test", 2048)
ca2 = certs.CertStore.from_store(str(tmpdir.join("ca2")), "test", 2048)
assert not ca1.default_ca.get_serial_number() == ca2.default_ca.get_serial_number()
dc = ca2.get_cert(b"foo.com", [b"sans.example.com"])
@ -124,7 +124,7 @@ class TestCertStore:
class TestDummyCert:
def test_with_ca(self, tmpdir):
ca = certs.CertStore.from_store(str(tmpdir), "test")
ca = certs.CertStore.from_store(str(tmpdir), "test", 2048)
r = certs.dummy_cert(
ca.default_privatekey,
ca.default_ca,