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Moved Identity Fernet to internal implementation

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This commit is contained in:
Mark Qvist 2022-06-08 12:29:51 +02:00
parent d1a461a2b3
commit 5d3a0efc89
1 changed files with 6 additions and 5 deletions
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11
RNS/Identity.py
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@ -34,7 +34,8 @@ 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 cryptography.fernet import Fernet
from RNS.Cryptography import Fernet
class Identity:
@ -431,8 +432,8 @@ class Identity:
context=self.get_context(),
)
fernet = Fernet(base64.urlsafe_b64encode(derived_key))
ciphertext = base64.urlsafe_b64decode(fernet.encrypt(plaintext))
fernet = Fernet(derived_key)
ciphertext = fernet.encrypt(plaintext)
token = ephemeral_pub_bytes+ciphertext
return token
@ -464,9 +465,9 @@ class Identity:
context=self.get_context(),
)
fernet = Fernet(base64.urlsafe_b64encode(derived_key))
fernet = Fernet(derived_key)
ciphertext = ciphertext_token[Identity.KEYSIZE//8//2:]
plaintext = fernet.decrypt(base64.urlsafe_b64encode(ciphertext))
plaintext = fernet.decrypt(ciphertext)
except Exception as e:
RNS.log("Decryption by "+RNS.prettyhexrep(self.hash)+" failed: "+str(e), RNS.LOG_DEBUG)