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Use internal implementation for X25519 key exchanges

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Mark Qvist
2022-06-08 13:36:23 +02:00
parent 7a596882a8
commit 06fffe5a94
4 changed files with 165 additions and 25 deletions
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RNS/Identity.py
+5 -19
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@@ -28,11 +28,10 @@ import atexit
import hashlib
from .vendor import umsgpack as umsgpack
from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives import serialization
from cryptography.hazmat.primitives.asymmetric.ed25519 import Ed25519PrivateKey, Ed25519PublicKey
from cryptography.hazmat.primitives.asymmetric.x25519 import X25519PrivateKey, X25519PublicKey
from RNS.Cryptography.Curve25519 import X25519PrivateKey, X25519PublicKey
from RNS.Cryptography import Fernet
@@ -292,11 +291,7 @@ class Identity:
def create_keys(self):
self.prv = X25519PrivateKey.generate()
self.prv_bytes = self.prv.private_bytes(
encoding=serialization.Encoding.Raw,
format=serialization.PrivateFormat.Raw,
encryption_algorithm=serialization.NoEncryption()
)
self.prv_bytes = self.prv.private_bytes()
self.sig_prv = Ed25519PrivateKey.generate()
self.sig_prv_bytes = self.sig_prv.private_bytes(
@@ -306,10 +301,7 @@ class Identity:
)
self.pub = self.prv.public_key()
self.pub_bytes = self.pub.public_bytes(
encoding=serialization.Encoding.Raw,
format=serialization.PublicFormat.Raw
)
self.pub_bytes = self.pub.public_bytes()
self.sig_pub = self.sig_prv.public_key()
self.sig_pub_bytes = self.sig_pub.public_bytes(
@@ -347,10 +339,7 @@ class Identity:
self.sig_prv = Ed25519PrivateKey.from_private_bytes(self.sig_prv_bytes)
self.pub = self.prv.public_key()
self.pub_bytes = self.pub.public_bytes(
encoding=serialization.Encoding.Raw,
format=serialization.PublicFormat.Raw
)
self.pub_bytes = self.pub.public_bytes()
self.sig_pub = self.sig_prv.public_key()
self.sig_pub_bytes = self.sig_pub.public_bytes(
@@ -416,10 +405,7 @@ class Identity:
"""
if self.pub != None:
ephemeral_key = X25519PrivateKey.generate()
ephemeral_pub_bytes = ephemeral_key.public_key().public_bytes(
encoding=serialization.Encoding.Raw,
format=serialization.PublicFormat.Raw
)
ephemeral_pub_bytes = ephemeral_key.public_key().public_bytes()
shared_key = ephemeral_key.exchange(self.pub)