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32 lines
1019 B
Python
32 lines
1019 B
Python
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from .. import constants
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from ..card_interface import CardInterface
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from ..preconditions import require_pin_verified
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@require_pin_verified
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def unpair(card: CardInterface, index: int) -> None:
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'''
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Sends the UNPAIR command to remove a pairing index from the card.
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Preconditions:
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- Secure Channel must be opened
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- PIN must be verified
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This function securely communicates with the card using the established
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session to instruct it to forget a specific pairing index.
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Args:
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transport: The transport interface used to send APDUs.
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secure_session: The active SecureChannel object used to wrap APDUs.
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index (int): The pairing index (0–15) to unpair from the card.
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Raises:
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ValueError: If transport or secure_session is not provided, or if
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the session is not authenticated.
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APDUError: If the response status word indicates an error.
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'''
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card.send_secure_apdu(
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ins=constants.INS_UNPAIR,
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p1=index,
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)
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