Delete 'signing.py'

signing.py

@@ -1,124 +0,0 @@
-import random
-from base64 import b64decode, b64encode
-from datetime import datetime
-
-from cryptography import x509
-from cryptography.hazmat.backends import default_backend
-from cryptography.hazmat.primitives import hashes, serialization
-from cryptography.hazmat.primitives.asymmetric import padding, rsa
-from cryptography.x509.oid import NameOID
-
-from ._helpers import KeyPair, dearmour, Helperx509
-
-
-# TODO: Move this helper somewhere else
-def armour_cert(cert: bytes) -> str:
-    return Helperx509
-
-
-"""
-Generates a nonce in this format:
-01000001876bd0a2c0e571093967fce3d7
-01                                 # version
-   000001876d008cc5                 # unix time
-                   r1r2r3r4r5r6r7r8 # random bytes
-"""
-
-
-def generate_nonce() -> bytes:
-    return (
-        b"\x01"
-        + int(datetime.now().timestamp() * 1000).to_bytes(8, "big")
-        + random.randbytes(8)
-    )
-
-
-import typing
-
-
-# Creates a payload from individual parts for signing
-def _create_payload(
-    bag_key: str,
-    query_string: str,
-    push_token: typing.Union[str, bytes],
-    payload: bytes,
-    nonce: typing.Union[bytes, None] = None,
-) -> tuple[bytes, bytes]:
-    # Generate the nonce
-    if nonce is None:
-        nonce = generate_nonce()
-
-    push_token = b64decode(push_token)
-
-    if payload is None:
-        payload = b""
-
-    return (
-        nonce
-        + len(bag_key).to_bytes(4, "big")
-        + bag_key.encode()
-        + len(query_string).to_bytes(4, "big")
-        + query_string.encode()
-        + len(payload).to_bytes(4, "big")
-        + payload
-        + len(push_token).to_bytes(4, "big")
-        + push_token,
-        nonce,
-    )
-
-
-# Returns signature, nonce
-def _sign_payload(
-    private_key: str, bag_key: str, query_string: str, push_token: str, payload: bytes, nonce = None
-) -> tuple[str, bytes]:
-    # Load the private key
-    key = serialization.load_pem_private_key(
-        private_key.encode(), password=None, backend=default_backend()
-    )
-
-    payload, nonce = _create_payload(bag_key, query_string, push_token, payload, nonce)
-
-    sig = key.sign(payload, padding.PKCS1v15(), hashes.SHA1())  # type: ignore
-
-    sig = b"\x01\x01" + sig
-    sig = b64encode(sig).decode()
-
-    return sig, nonce
-
-
-# Add headers for x-push-sig and x-auth-sig stuff
-def add_auth_signature(
-    headers: dict,
-    body: bytes,
-    bag_key: str,
-    auth_key: KeyPair,
-    push_key: KeyPair,
-    push_token: str,
-    auth_number=None,
-):
-    push_sig, push_nonce = _sign_payload(push_key.key, bag_key, "", push_token, body)
-    headers["x-push-sig"] = push_sig
-    headers["x-push-nonce"] = b64encode(push_nonce)
-    headers["x-push-cert"] = dearmour(push_key.cert)
-    headers["x-push-token"] = push_token
-
-    auth_sig, auth_nonce = _sign_payload(auth_key.key, bag_key, "", push_token, body)
-    auth_postfix = "-" + str(auth_number) if auth_number is not None else ""
-    headers["x-auth-sig" + auth_postfix] = auth_sig
-    headers["x-auth-nonce" + auth_postfix] = b64encode(auth_nonce)
-    headers["x-auth-cert" + auth_postfix] = dearmour(auth_key.cert)
-
-
-def add_id_signature(
-    headers: dict,
-    body: bytes,
-    bag_key: str,
-    id_key: KeyPair,
-    push_token: str,
-    nonce=None,
-):
-    id_sig, id_nonce = _sign_payload(id_key.key, bag_key, "", push_token, body, nonce)
-    headers["x-id-sig"] = id_sig
-    headers["x-id-nonce"] = b64encode(id_nonce).decode()
-    headers["x-id-cert"] = dearmour(id_key.cert)
-    headers["x-push-token"] = push_token