def export(self, dbg_info: DebugInfo = DebugInfo.disabled()) -> bytes:
"""Serialization to binary representation.
:param dbg_info: instance allowing to provide debug info about exported data
:return: binary representation of the region (serialization).
"""
result = super().export()
# KIB
kib_data = self._kib.export()
dbg_info.append_binary_section("BEE-KIB (non-crypted)", kib_data)
aes = AES.new(self._sw_key, AES.MODE_ECB)
result += aes.encrypt(kib_data)
# padding
result = extend_block(result, self.PRDB_OFFSET)
# PRDB
prdb_data = self._prdb.export()
dbg_info.append_binary_section("BEE-PRDB (non-crypted)", prdb_data)
aes = AES.new(self._kib.kib_key, AES.MODE_CBC, self._kib.kib_iv)
result += aes.encrypt(prdb_data)
# padding
return extend_block(result, self.SIZE)
def test_add_padding_invalid_input():
"""Test invalid inputs for misc.align_block()"""
# negative length
with pytest.raises(AssertionError):
extend_block(b'', -1)
# length < current length
with pytest.raises(AssertionError):
extend_block(b'\x00\x00', 1)
# padding > 255
with pytest.raises(AssertionError):
extend_block(b'\x00\x00', 1, 256)
# padding < 0
with pytest.raises(AssertionError):
extend_block(b'\x00\x00', 1, -1)
def test_SegCSF_export_parse():
obj = SegCSF(enabled=True)
obj.append_command(
CmdWriteData(ops=EnumWriteOps.WRITE_VALUE,
data=[(0x30340004, 0x4F400005)]))
data = obj.export()
csf_parsed = SegCSF.parse(data)
assert data == csf_parsed.export()
# with padding
obj.padding_len = 0x10
assert obj.export() == extend_block(data, obj.size + 0x10)
def export(self) -> bytes:
""":return: binary representation of the region (serialization)."""
result = super().export()
result += pack(
self._struct_format(),
self.TAGL,
self.TAGH,
self.VERSION,
self.fac_count,
self._start_addr,
self._end_addr,
self.mode,
self.lock_options,
self.counter[::-1], # bytes swapped: reversed order
b'\x00' * 32)
for fac in self.fac_regions:
result += fac.export()
result = extend_block(result, self.SIZE)
return result
def test_add_padding(test_input: bytes, length: int, padding: int, expected: bytes) -> None:
"""Test misc.add_padding()"""
data = extend_block(test_input, length, padding)
assert data == expected
