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Implemented compatibility handling for AES-256 migration

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Mark Qvist 2025-05-06 12:08:17 +02:00
parent 5dc8cdc6dc
commit d7791c60e2
4 changed files with 64 additions and 26 deletions
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8
RNS/Identity.py
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@ -544,6 +544,8 @@ class Identity:
RNS.log("The contained exception was: "+str(e))
def __init__(self,create_keys=True):
self.derived_key_length = 64
# Initialize keys to none
self.prv = None
self.prv_bytes = None
@ -677,7 +679,7 @@ class Identity:
shared_key = ephemeral_key.exchange(target_public_key)
derived_key = RNS.Cryptography.hkdf(
length=32,
length=self.derived_key_length,
derive_from=shared_key,
salt=self.get_salt(),
context=self.get_context(),
@ -715,7 +717,7 @@ class Identity:
ratchet_id = Identity._get_ratchet_id(ratchet_prv.public_key().public_bytes())
shared_key = ratchet_prv.exchange(peer_pub)
derived_key = RNS.Cryptography.hkdf(
length=32,
length=self.derived_key_length,
derive_from=shared_key,
salt=self.get_salt(),
context=self.get_context(),
@ -740,7 +742,7 @@ class Identity:
if plaintext == None:
shared_key = self.prv.exchange(peer_pub)
derived_key = RNS.Cryptography.hkdf(
length=32,
length=self.derived_key_length,
derive_from=shared_key,
salt=self.get_salt(),
context=self.get_context(),