tryme.py
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tryme.py
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38
tryme.py
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from fido2.pcsc import CtapPcscDevice
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from fido2.utils import sha256
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from fido2.ctap1 import Ctap1
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import sys
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dev = next(CtapPcscDevice.list_devices(), None)
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if not dev:
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print("No NFC u2f device found")
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sys.exit(1)
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chal = sha256(b"AAA")
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appid = sha256(b"BBB")
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ctap1 = Ctap1(dev)
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print("version:", ctap1.get_version())
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# True - make extended APDU and send it to key
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# ISO 7816-3:2006. page 33, 12.1.3 Decoding conventions for command APDUs
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# ISO 7816-3:2006. page 34, 12.2 Command-response pair transmission by T=0
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# False - make group of short (less than 255 bytes length) APDU
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# and send them to key. ISO 7816-3:2005, page 9, 5.1.1.1 Command chaining
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dev.use_ext_apdu = False
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reg = ctap1.register(chal, appid)
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print("register:", reg)
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reg.verify(appid, chal)
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print("Register message verify OK")
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auth = ctap1.authenticate(chal, appid, reg.key_handle)
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print("authenticate result: ", auth)
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res = auth.verify(appid, chal, reg.public_key)
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print("Authenticate message verify OK")
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