/usr/lib/python2.7/dist-packages/cryptography/hazmat/primitives/asymmetric/dh.py is in python-cryptography 1.2.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 | # This file is dual licensed under the terms of the Apache License, Version
# 2.0, and the BSD License. See the LICENSE file in the root of this repository
# for complete details.
from __future__ import absolute_import, division, print_function
import abc
import six
from cryptography import utils
class DHPrivateNumbers(object):
def __init__(self, x, public_numbers):
if not isinstance(x, six.integer_types):
raise TypeError("x must be an integer.")
if not isinstance(public_numbers, DHPublicNumbers):
raise TypeError("public_numbers must be an instance of "
"DHPublicNumbers.")
self._x = x
self._public_numbers = public_numbers
def __eq__(self, other):
if not isinstance(other, DHPrivateNumbers):
return NotImplemented
return (
self._x == other._x and
self._public_numbers == other._public_numbers
)
def __ne__(self, other):
return not self == other
public_numbers = utils.read_only_property("_public_numbers")
x = utils.read_only_property("_x")
class DHPublicNumbers(object):
def __init__(self, y, parameter_numbers):
if not isinstance(y, six.integer_types):
raise TypeError("y must be an integer.")
if not isinstance(parameter_numbers, DHParameterNumbers):
raise TypeError(
"parameters must be an instance of DHParameterNumbers.")
self._y = y
self._parameter_numbers = parameter_numbers
def __eq__(self, other):
if not isinstance(other, DHPublicNumbers):
return NotImplemented
return (
self._y == other._y and
self._parameter_numbers == other._parameter_numbers
)
def __ne__(self, other):
return not self == other
y = utils.read_only_property("_y")
parameter_numbers = utils.read_only_property("_parameter_numbers")
class DHParameterNumbers(object):
def __init__(self, p, g):
if (
not isinstance(p, six.integer_types) or
not isinstance(g, six.integer_types)
):
raise TypeError("p and g must be integers")
self._p = p
self._g = g
def __eq__(self, other):
if not isinstance(other, DHParameterNumbers):
return NotImplemented
return (
self._p == other._p and
self._g == other._g
)
def __ne__(self, other):
return not self == other
p = utils.read_only_property("_p")
g = utils.read_only_property("_g")
@six.add_metaclass(abc.ABCMeta)
class DHParameters(object):
@abc.abstractmethod
def generate_private_key(self):
"""
Generates and returns a DHPrivateKey.
"""
@six.add_metaclass(abc.ABCMeta)
class DHParametersWithSerialization(DHParameters):
@abc.abstractmethod
def parameter_numbers(self):
"""
Returns a DHParameterNumbers.
"""
@six.add_metaclass(abc.ABCMeta)
class DHPrivateKey(object):
@abc.abstractproperty
def key_size(self):
"""
The bit length of the prime modulus.
"""
@abc.abstractmethod
def public_key(self):
"""
The DHPublicKey associated with this private key.
"""
@abc.abstractmethod
def parameters(self):
"""
The DHParameters object associated with this private key.
"""
@six.add_metaclass(abc.ABCMeta)
class DHPrivateKeyWithSerialization(DHPrivateKey):
@abc.abstractmethod
def private_numbers(self):
"""
Returns a DHPrivateNumbers.
"""
@six.add_metaclass(abc.ABCMeta)
class DHPublicKey(object):
@abc.abstractproperty
def key_size(self):
"""
The bit length of the prime modulus.
"""
@abc.abstractmethod
def parameters(self):
"""
The DHParameters object associated with this public key.
"""
@six.add_metaclass(abc.ABCMeta)
class DHPublicKeyWithSerialization(DHPublicKey):
@abc.abstractmethod
def public_numbers(self):
"""
Returns a DHPublicNumbers.
"""
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