668170457e
Migrates all 43 sim modules and 23 test files (~7.8k LOC, 686 tests) from .worktrees/sim-framework/ into pm3py/sim/. Import fixes: - 4 files: ..protocol/..transport → ..core.protocol/..core.transport - trace_fmt.py: pm3py.hf_15 → pm3py.trace.ndef - test_sim_pm3medium.py: flat imports → core.* - test_sim_trace_fmt.py: flat imports → core.* - Added sim Cmd entries to core/protocol.py (EML_SETMEM, SIM_TABLE_*) 751 tests passing (686 sim + 65 core). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
87 lines
3.0 KiB
Python
87 lines
3.0 KiB
Python
"""NXP ICODE/NTAG5 platform — shared NXP custom commands."""
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from __future__ import annotations
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import os
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import struct
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from .frame import RFFrame
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from .trace_fmt import decode_15693_nxp
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from .type5 import NfcType5Tag
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# NXP manufacturer code
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NXP_MFG = 0x04
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# NXP custom commands per SL2S2602 datasheet
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CMD_INVENTORY_READ = 0xA0
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CMD_FAST_INVENTORY_READ = 0xA1
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CMD_SET_EAS = 0xA2
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CMD_RESET_EAS = 0xA3
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CMD_LOCK_EAS = 0xA4
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CMD_EAS_ALARM = 0xA5
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CMD_PASSWORD_PROTECT_EAS_AFI = 0xA6
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CMD_WRITE_EAS_ID = 0xA7
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CMD_GET_NXP_SYSTEM_INFO = 0xAB
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CMD_GET_RANDOM = 0xB2
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CMD_SET_PASSWORD = 0xB3
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CMD_WRITE_PASSWORD = 0xB4
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CMD_LOCK_PASSWORD = 0xB5
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CMD_PROTECT_PAGE = 0xB6
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CMD_LOCK_PAGE_PROTECTION = 0xB7
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CMD_DESTROY = 0xB9
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CMD_ENABLE_PRIVACY = 0xBA
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CMD_64BIT_PASSWORD_PROTECTION = 0xBB
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CMD_STAY_QUIET_PERSISTENT = 0xBC
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CMD_READ_SIGNATURE = 0xBD
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CMD_READ_CONFIG = 0xC0
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CMD_WRITE_CONFIG = 0xC1
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CMD_READ_TT = 0xC4
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class NxpIcodeTag(NfcType5Tag):
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"""NXP ICODE/NTAG5 shared platform features.
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Provides: originality signature, NXP system info, GET_RANDOM, SET_PASSWORD.
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Base for ICODE SLIX, SLIX2, DNA, NTAG 5 Link, etc.
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"""
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_uid_prefix = b"\xE0\x04" # E0 + NXP manufacturer code
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def __init__(self, uid: bytes, signature: bytes | None = None, **kwargs):
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super().__init__(uid=uid, **kwargs)
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# 32-byte ECC originality signature (from factory, read-only)
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self._signature = signature or bytes(32)
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def decode_trace(self, direction: int, payload: bytes) -> str | None:
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return decode_15693_nxp(direction, payload) or super().decode_trace(direction, payload)
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def _handle_custom_command(self, cmd: int, frame: RFFrame) -> RFFrame | None:
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"""Handle NXP custom commands (0xA0-0xDF)."""
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# Verify NXP manufacturer code
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if len(frame.data) < 3 or frame.data[2] != NXP_MFG:
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return None
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match cmd:
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case 0xB2: # GET RANDOM NUMBER
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return self._handle_get_random(frame)
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case 0xB3: # SET PASSWORD
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return self._nxp_handle_set_password(frame)
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return None
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def _handle_get_nxp_system_info(self, frame: RFFrame) -> RFFrame | None:
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"""GET NXP SYSTEM INFO (0xAB): returns PP byte, PP conditions, lock bits, feature flags."""
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# Base implementation — subclasses override with actual PP/feature data
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# Response: flags(1) + PP(1) + PP_cond(1) + lock_bits(1) + feature_flags(4)
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return RFFrame.from_bytes(bytes([0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]))
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def _handle_get_random(self, frame: RFFrame) -> RFFrame | None:
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random_bytes = os.urandom(2)
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return RFFrame.from_bytes(bytes([0x00]) + random_bytes)
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def _handle_read_signature(self, frame: RFFrame) -> RFFrame | None:
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"""READ SIGNATURE (0xBD): returns 32-byte ECC originality signature."""
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return RFFrame.from_bytes(bytes([0x00]) + self._signature)
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def _nxp_handle_set_password(self, frame: RFFrame) -> RFFrame | None:
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"""Base SET_PASSWORD handler. Override in subclasses for specific password types."""
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return None
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