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DH Key compute check modification for OOB Pairing

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Gopi Sakshihally Bhuthaiah
2024-08-08 07:53:05 +00:00
parent 4433184048
commit 619b32d36e
1 changed files with 12 additions and 7 deletions
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19
bumble/smp.py
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@@ -764,7 +764,7 @@ class Session:
self.peer_io_capability = SMP_NO_INPUT_NO_OUTPUT_IO_CAPABILITY self.peer_io_capability = SMP_NO_INPUT_NO_OUTPUT_IO_CAPABILITY
# OOB # OOB
self.oob_data_flag = 0 if pairing_config.oob is None else 1 self.oob_data_flag = 0 if pairing_config.oob.peer_data is None else 1
# Set up addresses # Set up addresses
self_address = connection.self_resolvable_address or connection.self_address self_address = connection.self_resolvable_address or connection.self_address
@@ -791,7 +791,7 @@ class Session:
raise InvalidArgumentError( raise InvalidArgumentError(
"oob pairing config requires a context when sc is True" "oob pairing config requires a context when sc is True"
) )
self.r = pairing_config.oob.our_context.r self.local_oob_r = pairing_config.oob.our_context.r
self.ecc_key = pairing_config.oob.our_context.ecc_key self.ecc_key = pairing_config.oob.our_context.ecc_key
if pairing_config.oob.legacy_context is not None: if pairing_config.oob.legacy_context is not None:
self.tk = pairing_config.oob.legacy_context.tk self.tk = pairing_config.oob.legacy_context.tk
@@ -800,12 +800,12 @@ class Session:
raise InvalidArgumentError( raise InvalidArgumentError(
"oob pairing config requires a legacy context when sc is False" "oob pairing config requires a legacy context when sc is False"
) )
self.r = bytes(16) self.local_oob_r = bytes(16)
self.ecc_key = manager.ecc_key self.ecc_key = manager.ecc_key
self.tk = pairing_config.oob.legacy_context.tk self.tk = pairing_config.oob.legacy_context.tk
else: else:
self.peer_oob_data = None self.peer_oob_data = None
self.r = bytes(16) self.local_oob_r = bytes(16)
self.ecc_key = manager.ecc_key self.ecc_key = manager.ecc_key
self.tk = bytes(16) self.tk = bytes(16)
@@ -1457,7 +1457,7 @@ class Session:
return return
if command.oob_data_flag == 0: if command.oob_data_flag == 0:
# The peer doesn't have OOB data, use r=0 # The peer doesn't have OOB data, use r=0
self.r = bytes(16) self.local_oob_r = bytes(16)
else: else:
# Decide which pairing method to use from the IO capability # Decide which pairing method to use from the IO capability
self.decide_pairing_method( self.decide_pairing_method(
@@ -1527,7 +1527,7 @@ class Session:
return return
if command.oob_data_flag == 0: if command.oob_data_flag == 0:
# The peer doesn't have OOB data, use r=0 # The peer doesn't have OOB data, use r=0
self.r = bytes(16) self.local_oob_r = bytes(16)
else: else:
# Decide which pairing method to use from the IO capability # Decide which pairing method to use from the IO capability
self.decide_pairing_method( self.decide_pairing_method(
@@ -1727,7 +1727,6 @@ class Session:
if self.pairing_method in ( if self.pairing_method in (
PairingMethod.JUST_WORKS, PairingMethod.JUST_WORKS,
PairingMethod.NUMERIC_COMPARISON, PairingMethod.NUMERIC_COMPARISON,
PairingMethod.OOB,
): ):
ra = bytes(16) ra = bytes(16)
rb = ra rb = ra
@@ -1735,6 +1734,12 @@ class Session:
assert self.passkey assert self.passkey
ra = self.passkey.to_bytes(16, byteorder='little') ra = self.passkey.to_bytes(16, byteorder='little')
rb = ra rb = ra
elif self.pairing_method == PairingMethod.OOB:
if self.peer_oob_data:
ra = self.peer_oob_data.r
else:
ra = bytes(16)
rb = self.local_oob_r
else: else:
return return