ciphers.diffie_hellman¶

Attributes¶

Classes¶

DiffieHellman

Class to represent the Diffie-Hellman key exchange protocol

Module Contents¶

class ciphers.diffie_hellman.DiffieHellman(group: int = 14)¶

Class to represent the Diffie-Hellman key exchange protocol

>>> alice = DiffieHellman()
>>> bob = DiffieHellman()

>>> alice_private = alice.get_private_key()
>>> alice_public = alice.generate_public_key()

>>> bob_private = bob.get_private_key()
>>> bob_public = bob.generate_public_key()

>>> # generating shared key using the DH object
>>> alice_shared = alice.generate_shared_key(bob_public)
>>> bob_shared = bob.generate_shared_key(alice_public)

>>> assert alice_shared == bob_shared

>>> # generating shared key using static methods
>>> alice_shared = DiffieHellman.generate_shared_key_static(
...     alice_private, bob_public
... )
>>> bob_shared = DiffieHellman.generate_shared_key_static(
...     bob_private, alice_public
... )

>>> assert alice_shared == bob_shared

generate_public_key() → str¶

generate_shared_key(other_key_str: str) → str¶

static generate_shared_key_static(local_private_key_str: str, remote_public_key_str: str, group: int = 14) → str¶

get_private_key() → str¶

is_valid_public_key(key: int) → bool¶

static is_valid_public_key_static(remote_public_key_str: int, prime: int) → bool¶

__private_key¶

generator = 2¶

prime¶

ciphers.diffie_hellman.primes¶