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Improved cryptography API compatibility

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Mark Qvist
2022-03-08 00:38:51 +01:00
parent 95d3346da6
commit 550dfd44cb
4 changed files with 24 additions and 4 deletions
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RNS/Identity.py
+10 -2
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@@ -14,6 +14,8 @@ from cryptography.hazmat.primitives.asymmetric.x25519 import X25519PrivateKey, X
from cryptography.hazmat.primitives.kdf.hkdf import HKDF
from cryptography.fernet import Fernet
cio_default_backend = default_backend()
class Identity:
"""
This class is used to manage identities in Reticulum. It provides methods
@@ -392,11 +394,14 @@ class Identity:
)
shared_key = ephemeral_key.exchange(self.pub)
derived_key = derived_key = HKDF(
# TODO: Improve this re-allocation of HKDF
derived_key = HKDF(
algorithm=hashes.SHA256(),
length=32,
salt=self.get_salt(),
info=self.get_context(),
backend=cio_default_backend,
).derive(shared_key)
fernet = Fernet(base64.urlsafe_b64encode(derived_key))
@@ -424,11 +429,14 @@ class Identity:
peer_pub = X25519PublicKey.from_public_bytes(peer_pub_bytes)
shared_key = self.prv.exchange(peer_pub)
derived_key = derived_key = HKDF(
# TODO: Improve this re-allocation of HKDF
derived_key = HKDF(
algorithm=hashes.SHA256(),
length=32,
salt=self.get_salt(),
info=self.get_context(),
backend=cio_default_backend,
).derive(shared_key)
fernet = Fernet(base64.urlsafe_b64encode(derived_key))