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Moved Link Fernet to internal implementation

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This commit is contained in:
Mark Qvist 2022-06-08 12:34:31 +02:00
parent 5d3a0efc89
commit 4bd5f05e0e
2 changed files with 7 additions and 8 deletions
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2
RNS/Identity.py
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@ -20,13 +20,11 @@
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
import base64
import math
import os
import RNS
import time
import atexit
import base64
import hashlib
from .vendor import umsgpack as umsgpack

13
RNS/Link.py
View File

@ -25,11 +25,12 @@ from cryptography.hazmat.primitives import hashes
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 cryptography.fernet import Fernet
from RNS.Cryptography import Fernet
from time import sleep
from .vendor import umsgpack as umsgpack
import threading
import base64
import math
import time
import RNS
@ -787,7 +788,7 @@ class Link:
try:
if not self.fernet:
try:
self.fernet = Fernet(base64.urlsafe_b64encode(self.derived_key))
self.fernet = Fernet(self.derived_key)
except Exception as e:
RNS.log("Could not "+str(self)+" instantiate Fernet while performin encryption on link. The contained exception was: "+str(e), RNS.LOG_ERROR)
raise e
@ -800,7 +801,7 @@ class Link:
# stamps until the year 8921556 AD, we'll also strip 2
# bytes from the timestamp field and reinsert those as
# 0x00 when received.
ciphertext = base64.urlsafe_b64decode(self.fernet.encrypt(plaintext))[3:]
ciphertext = self.fernet.encrypt(plaintext)[3:]
return ciphertext
except Exception as e:
@ -811,9 +812,9 @@ class Link:
def decrypt(self, ciphertext):
try:
if not self.fernet:
self.fernet = Fernet(base64.urlsafe_b64encode(self.derived_key))
self.fernet = Fernet(self.derived_key)
plaintext = self.fernet.decrypt(base64.urlsafe_b64encode(bytes([RNS.Identity.FERNET_VERSION, 0x00, 0x00])+ciphertext))
plaintext = self.fernet.decrypt(bytes([RNS.Identity.FERNET_VERSION, 0x00, 0x00]) + ciphertext)
return plaintext
except Exception as e:
RNS.log("Decryption failed on link "+str(self)+". The contained exception was: "+str(e), RNS.LOG_ERROR)