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"""
PKCS#11 Diffie-Hellman tests
"""
import base64
from pkcs11 import Attribute, DomainParameters, KeyType, Mechanism
from pkcs11.util.dh import (
decode_dh_domain_parameters,
encode_dh_domain_parameters,
encode_dh_public_key,
)
from . import FIXME, TestCase, requires
class DHTests(TestCase):
@requires(Mechanism.DH_PKCS_KEY_PAIR_GEN, Mechanism.DH_PKCS_DERIVE)
@FIXME.opencryptoki # AttributeValueInvalid when generating keypair
def test_derive_key(self):
# Alice and Bob each create a Diffie-Hellman keypair from the
# publicly available DH parameters
#
# E.g. RFC 3526, RFC 5114 or openssl dhparam -C 2236
prime = [
0x0F,
0x52,
0xE5,
0x24,
0xF5,
0xFA,
0x9D,
0xDC,
0xC6,
0xAB,
0xE6,
0x04,
0xE4,
0x20,
0x89,
0x8A,
0xB4,
0xBF,
0x27,
0xB5,
0x4A,
0x95,
0x57,
0xA1,
0x06,
0xE7,
0x30,
0x73,
0x83,
0x5E,
0xC9,
0x23,
0x11,
0xED,
0x42,
0x45,
0xAC,
0x49,
0xD3,
0xE3,
0xF3,
0x34,
0x73,
0xC5,
0x7D,
0x00,
0x3C,
0x86,
0x63,
0x74,
0xE0,
0x75,
0x97,
0x84,
0x1D,
0x0B,
0x11,
0xDA,
0x04,
0xD0,
0xFE,
0x4F,
0xB0,
0x37,
0xDF,
0x57,
0x22,
0x2E,
0x96,
0x42,
0xE0,
0x7C,
0xD7,
0x5E,
0x46,
0x29,
0xAF,
0xB1,
0xF4,
0x81,
0xAF,
0xFC,
0x9A,
0xEF,
0xFA,
0x89,
0x9E,
0x0A,
0xFB,
0x16,
0xE3,
0x8F,
0x01,
0xA2,
0xC8,
0xDD,
0xB4,
0x47,
0x12,
0xF8,
0x29,
0x09,
0x13,
0x6E,
0x9D,
0xA8,
0xF9,
0x5D,
0x08,
0x00,
0x3A,
0x8C,
0xA7,
0xFF,
0x6C,
0xCF,
0xE3,
0x7C,
0x3B,
0x6B,
0xB4,
0x26,
0xCC,
0xDA,
0x89,
0x93,
0x01,
0x73,
0xA8,
0x55,
0x3E,
0x5B,
0x77,
0x25,
0x8F,
0x27,
0xA3,
0xF1,
0xBF,
0x7A,
0x73,
0x1F,
0x85,
0x96,
0x0C,
0x45,
0x14,
0xC1,
0x06,
0xB7,
0x1C,
0x75,
0xAA,
0x10,
0xBC,
0x86,
0x98,
0x75,
0x44,
0x70,
0xD1,
0x0F,
0x20,
0xF4,
0xAC,
0x4C,
0xB3,
0x88,
0x16,
0x1C,
0x7E,
0xA3,
0x27,
0xE4,
0xAD,
0xE1,
0xA1,
0x85,
0x4F,
0x1A,
0x22,
0x0D,
0x05,
0x42,
0x73,
0x69,
0x45,
0xC9,
0x2F,
0xF7,
0xC2,
0x48,
0xE3,
0xCE,
0x9D,
0x74,
0x58,
0x53,
0xE7,
0xA7,
0x82,
0x18,
0xD9,
0x3D,
0xAF,
0xAB,
0x40,
0x9F,
0xAA,
0x4C,
0x78,
0x0A,
0xC3,
0x24,
0x2D,
0xDB,
0x12,
0xA9,
0x54,
0xE5,
0x47,
0x87,
0xAC,
0x52,
0xFE,
0xE8,
0x3D,
0x0B,
0x56,
0xED,
0x9C,
0x9F,
0xFF,
0x39,
0xE5,
0xE5,
0xBF,
0x62,
0x32,
0x42,
0x08,
0xAE,
0x6A,
0xED,
0x88,
0x0E,
0xB3,
0x1A,
0x4C,
0xD3,
0x08,
0xE4,
0xC4,
0xAA,
0x2C,
0xCC,
0xB1,
0x37,
0xA5,
0xC1,
0xA9,
0x64,
0x7E,
0xEB,
0xF9,
0xD3,
0xF5,
0x15,
0x28,
0xFE,
0x2E,
0xE2,
0x7F,
0xFE,
0xD9,
0xB9,
0x38,
0x42,
0x57,
0x03,
]
parameters = self.session.create_domain_parameters(
KeyType.DH,
{
Attribute.PRIME: prime,
Attribute.BASE: [0x2],
},
local=True,
)
# Alice generate a keypair
alice_public, alice_private = parameters.generate_keypair()
alice_value = alice_public[Attribute.VALUE]
# Bob generates a keypair
bob_public, bob_private = parameters.generate_keypair()
bob_value = bob_public[Attribute.VALUE]
self.assertNotEqual(alice_value, bob_value)
# Alice and Bob exchange values and an IV ...
iv = self.session.generate_random(128)
alice_session = alice_private.derive_key(
KeyType.AES,
128,
mechanism_param=bob_value,
template={
Attribute.SENSITIVE: False,
Attribute.EXTRACTABLE: True,
},
)
bob_session = bob_private.derive_key(
KeyType.AES,
128,
mechanism_param=alice_value,
template={
Attribute.SENSITIVE: False,
Attribute.EXTRACTABLE: True,
},
)
self.assertEqual(alice_session[Attribute.VALUE], bob_session[Attribute.VALUE])
crypttext = alice_session.encrypt("HI BOB!", mechanism_param=iv)
plaintext = bob_session.decrypt(crypttext, mechanism_param=iv)
self.assertEqual(plaintext, b"HI BOB!")
def test_load_params(self):
# This is RFC5114 #2
PARAMS = base64.b64decode("""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""")
params = self.session.create_domain_parameters(
KeyType.DH, decode_dh_domain_parameters(PARAMS), local=True
)
self.assertIsInstance(params, DomainParameters)
self.assertEqual(params[Attribute.PRIME][:4], b"\xad\x10\x7e\x1e")
@requires(Mechanism.DH_PKCS_PARAMETER_GEN, Mechanism.DH_PKCS_KEY_PAIR_GEN)
def test_generate_params(self):
params = self.session.generate_domain_parameters(KeyType.DH, 1024)
self.assertIsInstance(params, DomainParameters)
self.assertEqual(params[Attribute.PRIME_BITS], 1024)
self.assertEqual(len(params[Attribute.PRIME]) * 8, 1024)
encode_dh_domain_parameters(params)
# Test encoding the public key
public, _ = params.generate_keypair()
encode_dh_public_key(public)
|
