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Proof handling

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Mark Qvist 2018-04-17 17:46:48 +02:00
parent dedea6ba11
commit 19d9b1a4a5
9 changed files with 283 additions and 58 deletions
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26
RNS/Identity.py
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@ -14,12 +14,14 @@ from cryptography.hazmat.primitives.asymmetric import rsa
from cryptography.hazmat.primitives.asymmetric import padding
class Identity:
#KEYSIZE = 1536
KEYSIZE = 1024
DERKEYSIZE = KEYSIZE+272
#KEYSIZE = 1536
KEYSIZE = 1024
DERKEYSIZE = KEYSIZE+272
# Padding size, not configurable
PADDINGSIZE= 336
# Non-configurable constants
PADDINGSIZE = 336 # In bits
HASHLENGTH = 256 # In bits
SIGLENGTH = KEYSIZE
# Storage
known_destinations = {}
@ -257,13 +259,21 @@ class Identity:
hashes.SHA256()
)
return True
except:
except Exception as e:
return False
else:
raise KeyError("Signature validation failed because identity does not hold a public key")
def prove(self, packet, destination):
proof_data = packet.packet_hash + self.sign(packet.packet_hash)
def prove(self, packet, destination=None):
signature = self.sign(packet.packet_hash)
if RNS.Reticulum.should_use_implicit_proof():
proof_data = signature
else:
proof_data = packet.packet_hash + signature
if destination == None:
destination = packet.generateProofDestination()
proof = RNS.Packet(destination, proof_data, RNS.Packet.PROOF)
proof.send()