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Rough key-verification implementation #787

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37 changes: 37 additions & 0 deletions meshtastic/__main__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -472,6 +472,21 @@ def onConnected(interface):
waitForAckNak = True
interface.getNode(args.dest, False, **getNode_kwargs).removeIgnored(args.remove_ignored_node)

if args.key_verification:
closeNow = True
waitForAckNak = True
interface.getNode(args.dest, False, **getNode_kwargs).keyVerification(args.key_verification)

if args.key_verification_number:
closeNow = True
waitForAckNak = True
interface.getNode(args.dest, False, **getNode_kwargs).keyVerificationNumber(args.key_verification_number, args.key_verification_nonce)

if args.key_verification_confirm:
closeNow = True
waitForAckNak = True
interface.getNode(args.dest, False, **getNode_kwargs).keyVerificationConfirm(args.key_verification_confirm)

if args.reset_nodedb:
closeNow = True
waitForAckNak = True
Expand Down Expand Up @@ -1832,6 +1847,22 @@ def addRemoteAdminArgs(parser: argparse.ArgumentParser) -> argparse.ArgumentPars
"Use the node ID with a '!' or '0x' prefix or the node number.",
metavar="!xxxxxxxx"
)
group.add_argument(
"--key-verification",
help="start key verification. "
"Use the node ID with a '!' or '0x' prefix or the node number.",
metavar="!xxxxxxxx"
)
group.add_argument(
"--key-verification-number",
help="start key verification. "
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The help text is incorrect for this argument. It should describe providing a security number, not starting key verification.

Suggested change
help="start key verification. "
help="Provide a security number for key verification. "

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"Use the node ID with a '!' or '0x' prefix or the node number.",
)
group.add_argument(
"--key-verification-confirm",
help="start key verification. "
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The help text is incorrect for this argument. It should describe confirming key verification, not starting it.

Suggested change
help="start key verification. "
help="confirm key verification. "

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"Use the node ID with a '!' or '0x' prefix or the node number.",
)
group.add_argument(
"--reset-nodedb",
help="Tell the destination node to clear its list of nodes",
Expand Down Expand Up @@ -1961,6 +1992,12 @@ def initParser():
action="store_true",
)

group.add_argument(
"--key-verification-nonce",
help="start key verification. "
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The help text is incorrect for this argument. It should describe providing a nonce value, not starting key verification.

Suggested change
help="start key verification. "
help="Provide a nonce value for key verification. "

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"Use the node ID with a '!' or '0x' prefix or the node number.",
)

power_group = parser.add_argument_group(
"Power Testing", "Options for power testing/logging."
)
Expand Down
43 changes: 43 additions & 0 deletions meshtastic/node.py
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Original file line number Diff line number Diff line change
Expand Up @@ -770,6 +770,49 @@ def removeIgnored(self, nodeId: Union[int, str]):
onResponse = self.onAckNak
return self._sendAdmin(p, onResponse=onResponse)

def keyVerification(self, nodeId: Union[int, str]):
if isinstance(nodeId, str):
if nodeId.startswith("!"):
nodeId = int(nodeId[1:], 16)
else:
nodeId = int(nodeId)
p = admin_pb2.KeyVerificationAdmin()
p.message_type = p.MessageType.INITIATE_VERIFICATION
p.remote_nodenum = nodeId
p.nonce = 0
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The hardcoded nonce value of 0 appears to be a magic number. Consider using a named constant or adding a comment explaining why 0 is used for initiation.

Suggested change
p.nonce = 0
p.nonce = DEFAULT_NONCE

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a = admin_pb2.AdminMessage()
a.key_verification_admin.CopyFrom(p)
if self == self.iface.localNode:
onResponse = None
else:
onResponse = self.onAckNak
return self._sendAdmin(a, onResponse=onResponse)
def keyVerificationNumber(self, number: int, nonce: int,):
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Remove the trailing comma after the last parameter in the function definition.

Suggested change
def keyVerificationNumber(self, number: int, nonce: int,):
def keyVerificationNumber(self, number: int, nonce: int):

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print(int(number))
print(int(nonce))
Comment on lines +791 to +792
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Debug print statements should be removed from production code. Consider using proper logging instead.

Suggested change
print(int(number))
print(int(nonce))
logging.debug(f"Key verification number: {int(number)}")
logging.debug(f"Key verification nonce: {int(nonce)}")

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Comment on lines +791 to +792
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Debug print statements should be removed from production code. Consider using proper logging instead.

Suggested change
print(int(number))
print(int(nonce))
logging.debug(f"Security number: {int(number)}")
logging.debug(f"Nonce: {int(nonce)}")

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p = admin_pb2.KeyVerificationAdmin()
p.message_type = p.MessageType.PROVIDE_SECURITY_NUMBER
p.nonce = int(nonce)
p.security_number = int(number)
a = admin_pb2.AdminMessage()
a.key_verification_admin.CopyFrom(p)
if self == self.iface.localNode:
onResponse = None
else:
onResponse = self.onAckNak
return self._sendAdmin(a, onResponse=onResponse)
def keyVerificationConfirm(self, nonce: int,):
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Remove the trailing comma after the last parameter in the function definition.

Suggested change
def keyVerificationConfirm(self, nonce: int,):
def keyVerificationConfirm(self, nonce: int):

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print(int(nonce))
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Debug print statements should be removed from production code. Consider using proper logging instead.

Suggested change
print(int(nonce))
logging.debug(f"Nonce value: {int(nonce)}")

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p = admin_pb2.KeyVerificationAdmin()
p.message_type = p.MessageType.DO_VERIFY
p.nonce = int(nonce)
a = admin_pb2.AdminMessage()
a.key_verification_admin.CopyFrom(p)
if self == self.iface.localNode:
onResponse = None
else:
onResponse = self.onAckNak
return self._sendAdmin(a, onResponse=onResponse)
def resetNodeDb(self):
"""Tell the node to reset its list of nodes."""
self.ensureSessionKey()
Expand Down
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