/usr/lib/python3/dist-packages/Cryptodome/SelfTest/PublicKey/test_import_ECC.py is in python3-pycryptodome 3.4.7-1ubuntu1.
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#
# Copyright (c) 2015, Legrandin <helderijs@gmail.com>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# ===================================================================
import unittest
from Cryptodome.SelfTest.st_common import list_test_cases
from Cryptodome.Util._file_system import pycryptodome_filename
from Cryptodome.Util.py3compat import b, unhexlify, bord, tostr
from Cryptodome.Util.number import bytes_to_long
from Cryptodome.Hash import SHAKE128
from Cryptodome.PublicKey import ECC
def load_file(filename, mode="rb"):
fd = open(pycryptodome_filename([
"Cryptodome",
"SelfTest",
"PublicKey",
"test_vectors",
"ECC",
], filename), mode)
return fd.read()
def compact(lines):
ext = b("").join(lines)
return unhexlify(tostr(ext).replace(" ", "").replace(":", ""))
def create_ref_keys():
key_lines = load_file("ecc_p256.txt").splitlines()
private_key_d = bytes_to_long(compact(key_lines[2:5]))
public_key_xy = compact(key_lines[6:11])
assert bord(public_key_xy[0]) == 4 # Uncompressed
public_key_x = bytes_to_long(public_key_xy[1:33])
public_key_y = bytes_to_long(public_key_xy[33:])
return (ECC.construct(curve="P-256", d=private_key_d),
ECC.construct(curve="P-256", point_x=public_key_x, point_y=public_key_y))
# Create reference key pair
ref_private, ref_public = create_ref_keys()
def get_fixed_prng():
return SHAKE128.new().update(b("SEED")).read
class TestImport(unittest.TestCase):
def test_import_public_der(self):
key_file = load_file("ecc_p256_public.der")
key = ECC._import_subjectPublicKeyInfo(key_file)
self.assertEqual(ref_public, key)
key = ECC._import_der(key_file, None)
self.assertEqual(ref_public, key)
key = ECC.import_key(key_file)
self.assertEqual(ref_public, key)
def test_import_private_der(self):
key_file = load_file("ecc_p256_private.der")
key = ECC._import_private_der(key_file, None)
self.assertEqual(ref_private, key)
key = ECC._import_der(key_file, None)
self.assertEqual(ref_private, key)
key = ECC.import_key(key_file)
self.assertEqual(ref_private, key)
def test_import_private_pkcs8_clear(self):
key_file = load_file("ecc_p256_private_p8_clear.der")
key = ECC._import_der(key_file, None)
self.assertEqual(ref_private, key)
key = ECC.import_key(key_file)
self.assertEqual(ref_private, key)
def test_import_private_pkcs8_in_pem_clear(self):
key_file = load_file("ecc_p256_private_p8_clear.pem")
key = ECC.import_key(key_file)
self.assertEqual(ref_private, key)
def test_import_private_pkcs8_encrypted_1(self):
key_file = load_file("ecc_p256_private_p8.der")
key = ECC._import_der(key_file, "secret")
self.assertEqual(ref_private, key)
key = ECC.import_key(key_file, "secret")
self.assertEqual(ref_private, key)
def test_import_private_pkcs8_encrypted_2(self):
key_file = load_file("ecc_p256_private_p8.pem")
key = ECC.import_key(key_file, "secret")
self.assertEqual(ref_private, key)
def test_import_x509_der(self):
key_file = load_file("ecc_p256_x509.der")
key = ECC._import_der(key_file, None)
self.assertEqual(ref_public, key)
key = ECC.import_key(key_file)
self.assertEqual(ref_public, key)
def test_import_public_pem(self):
key_file = load_file("ecc_p256_public.pem")
key = ECC.import_key(key_file)
self.assertEqual(ref_public, key)
def test_import_private_pem(self):
key_file = load_file("ecc_p256_private.pem")
key = ECC.import_key(key_file)
self.assertEqual(ref_private, key)
def test_import_private_pem_encrypted(self):
for algo in "des3", : # TODO: , "aes128", "aes192", "aes256_gcm":
key_file = load_file("ecc_p256_private_enc_%s.pem" % algo)
key = ECC.import_key(key_file, "secret")
self.assertEqual(ref_private, key)
key = ECC.import_key(tostr(key_file), b("secret"))
self.assertEqual(ref_private, key)
def test_import_x509_pem(self):
key_file = load_file("ecc_p256_x509.pem")
key = ECC.import_key(key_file)
self.assertEqual(ref_public, key)
def test_import_openssh(self):
key_file = load_file("ecc_p256_public_openssh.txt")
key = ECC._import_openssh(key_file)
self.assertEqual(ref_public, key)
key = ECC.import_key(key_file)
self.assertEqual(ref_public, key)
class TestExport(unittest.TestCase):
def test_export_public_der(self):
key_file = load_file("ecc_p256_public.der")
encoded = ref_public._export_subjectPublicKeyInfo()
self.assertEqual(key_file, encoded)
# ---
encoded = ref_public.export_key(format="DER")
self.assertEqual(key_file, encoded)
def test_export_private_der(self):
key_file = load_file("ecc_p256_private.der")
encoded = ref_private._export_private_der()
self.assertEqual(key_file, encoded)
# ---
encoded = ref_private.export_key(format="DER", use_pkcs8=False)
self.assertEqual(key_file, encoded)
def test_export_private_pkcs8_clear(self):
key_file = load_file("ecc_p256_private_p8_clear.der")
encoded = ref_private._export_pkcs8()
self.assertEqual(key_file, encoded)
# ---
encoded = ref_private.export_key(format="DER")
self.assertEqual(key_file, encoded)
def test_export_private_pkcs8_encrypted(self):
encoded = ref_private._export_pkcs8(passphrase="secret",
protection="PBKDF2WithHMAC-SHA1AndAES128-CBC")
# This should prove that the output is password-protected
self.assertRaises(ValueError, ECC._import_pkcs8, encoded, None)
decoded = ECC._import_pkcs8(encoded, "secret")
self.assertEqual(ref_private, decoded)
# ---
encoded = ref_private.export_key(format="DER",
passphrase="secret",
protection="PBKDF2WithHMAC-SHA1AndAES128-CBC")
decoded = ECC.import_key(encoded, "secret")
self.assertEqual(ref_private, decoded)
def test_export_public_pem(self):
key_file = load_file("ecc_p256_public.pem", "rt").strip()
encoded = ref_private._export_public_pem()
self.assertEqual(key_file, encoded)
# ---
encoded = ref_public.export_key(format="PEM")
self.assertEqual(key_file, encoded)
def test_export_private_pem_clear(self):
key_file = load_file("ecc_p256_private.pem", "rt").strip()
encoded = ref_private._export_private_pem(None)
self.assertEqual(key_file, encoded)
# ---
encoded = ref_private.export_key(format="PEM", use_pkcs8=False)
self.assertEqual(key_file, encoded)
def test_export_private_pem_encrypted(self):
encoded = ref_private._export_private_pem(passphrase=b("secret"))
# This should prove that the output is password-protected
self.assertRaises(ValueError, ECC.import_key, encoded)
assert "EC PRIVATE KEY" in encoded
decoded = ECC.import_key(encoded, "secret")
self.assertEqual(ref_private, decoded)
# ---
encoded = ref_private.export_key(format="PEM",
passphrase="secret",
use_pkcs8=False)
decoded = ECC.import_key(encoded, "secret")
self.assertEqual(ref_private, decoded)
def test_export_private_pkcs8_and_pem_1(self):
# PKCS8 inside PEM with both unencrypted
key_file = load_file("ecc_p256_private_p8_clear.pem", "rt").strip()
encoded = ref_private._export_private_clear_pkcs8_in_clear_pem()
self.assertEqual(key_file, encoded)
# ---
encoded = ref_private.export_key(format="PEM")
self.assertEqual(key_file, encoded)
def test_export_private_pkcs8_and_pem_2(self):
# PKCS8 inside PEM with PKCS8 encryption
encoded = ref_private._export_private_encrypted_pkcs8_in_clear_pem("secret",
protection="PBKDF2WithHMAC-SHA1AndAES128-CBC")
# This should prove that the output is password-protected
self.assertRaises(ValueError, ECC.import_key, encoded)
assert "ENCRYPTED PRIVATE KEY" in encoded
decoded = ECC.import_key(encoded, "secret")
self.assertEqual(ref_private, decoded)
# ---
encoded = ref_private.export_key(format="PEM",
passphrase="secret",
protection="PBKDF2WithHMAC-SHA1AndAES128-CBC")
decoded = ECC.import_key(encoded, "secret")
self.assertEqual(ref_private, decoded)
def test_export_openssh(self):
key_file = load_file("ecc_p256_public_openssh.txt", "rt")
encoded = ref_public._export_openssh()
self.assertEqual(key_file, encoded)
# ---
encoded = ref_public.export_key(format="OpenSSH")
self.assertEqual(key_file, encoded)
def test_prng(self):
# Test that password-protected containers use the provided PRNG
encoded1 = ref_private.export_key(format="PEM",
passphrase="secret",
protection="PBKDF2WithHMAC-SHA1AndAES128-CBC",
randfunc=get_fixed_prng())
encoded2 = ref_private.export_key(format="PEM",
passphrase="secret",
protection="PBKDF2WithHMAC-SHA1AndAES128-CBC",
randfunc=get_fixed_prng())
self.assertEqual(encoded1, encoded2)
# ---
encoded1 = ref_private.export_key(format="PEM",
use_pkcs8=False,
passphrase="secret",
randfunc=get_fixed_prng())
encoded2 = ref_private.export_key(format="PEM",
use_pkcs8=False,
passphrase="secret",
randfunc=get_fixed_prng())
self.assertEqual(encoded1, encoded2)
def test_byte_or_string_passphrase(self):
encoded1 = ref_private.export_key(format="PEM",
use_pkcs8=False,
passphrase="secret",
randfunc=get_fixed_prng())
encoded2 = ref_private.export_key(format="PEM",
use_pkcs8=False,
passphrase=b("secret"),
randfunc=get_fixed_prng())
self.assertEqual(encoded1, encoded2)
def test_error_params1(self):
# Unknown format
self.assertRaises(ValueError, ref_private.export_key, format="XXX")
# Missing 'protection' parameter when PKCS#8 is used
ref_private.export_key(format="PEM", passphrase="secret",
use_pkcs8=False)
self.assertRaises(ValueError, ref_private.export_key, format="PEM",
passphrase="secret")
# DER format but no PKCS#8
self.assertRaises(ValueError, ref_private.export_key, format="DER",
passphrase="secret",
use_pkcs8=False,
protection="PBKDF2WithHMAC-SHA1AndAES128-CBC")
# Incorrect parameters for public keys
self.assertRaises(ValueError, ref_public.export_key, format="DER",
use_pkcs8=False)
# Empty password
self.assertRaises(ValueError, ref_private.export_key, format="PEM",
passphrase="", use_pkcs8=False)
self.assertRaises(ValueError, ref_private.export_key, format="PEM",
passphrase="",
protection="PBKDF2WithHMAC-SHA1AndAES128-CBC")
# No private keys with OpenSSH
self.assertRaises(ValueError, ref_private.export_key, format="OpenSSH",
passphrase="secret")
def get_tests(config={}):
tests = []
tests += list_test_cases(TestImport)
tests += list_test_cases(TestExport)
return tests
if __name__ == '__main__':
suite = lambda: unittest.TestSuite(get_tests())
unittest.main(defaultTest='suite')
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