117 lines
5.1 KiB
Markdown
117 lines
5.1 KiB
Markdown
# python-validity
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Validity fingerprint sensor driver.
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## Setting up
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On Ubuntu system:
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```
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$ sudo apt remove fprintd
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$ sudo add-apt-repository ppa:uunicorn/open-fprintd
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$ sudo apt-get update
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$ sudo apt install open-fprintd fprintd-clients python3-validity
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...wait a bit...
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$ fprintd-enroll
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```
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## Playground
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This package contains a set of scripts you can use to do a low-level debugging of the sensor protocol.
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Here is a couple of examples of how you can use them.
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Before using the scripts, make sure you've disabled the dbus service shipped with this package.
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All examples assume that you are in `/usr/share/python-validity/playground/` directory and your device is already paired.
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### Initialize a session
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Before talking to a device you will need to open it and start a new TLS session
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```
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$ python3
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Python 3.6.7 (default, Oct 22 2018, 11:32:17)
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[GCC 8.2.0] on linux
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Type "help", "copyright", "credits" or "license" for more information.
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>>> from prototype import *
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>>> open9x()
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>>>
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```
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### Enroll a new user
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Note: 0xf5 == WINBIO_FINGER_UNSPECIFIED_POS_01 (see [ms docs](https://docs.microsoft.com/en-us/windows/desktop/SecBioMet/winbio-ansi-381-pos-fingerprint-constants))
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```
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>>> db.dump_all()
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8: User S-1-5-21-111111111-1111111111-1111111111-1000 with 1 fingers:
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9: f5 (WINBIO_FINGER_UNSPECIFIED_POS_01)
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>>> enroll(sid_from_string('S-1-5-21-394619333-3876782012-1672975908-3333'), 0xf5)
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Waiting for a finger...
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Progress: 14 % done
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Progress: 28 % done
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Progress: 42 % done
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Progress: 57 % done
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Progress: 71 % done
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Progress: 85 % done
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Progress: 100 % done
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All done
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11
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>>> db.dump_all()
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8: User S-1-5-21-111111111-1111111111-1111111111-1000 with 1 fingers:
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9: f5 (WINBIO_FINGER_UNSPECIFIED_POS_01)
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10: User S-1-5-21-394619333-3876782012-1672975908-3333 with 1 fingers:
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11: f5 (WINBIO_FINGER_UNSPECIFIED_POS_01)
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>>>
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```
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### Delete database record (user/finger/whatever)
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```
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>>> db.dump_all()
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8: User S-1-5-21-111111111-1111111111-1111111111-1000 with 1 fingers:
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9: f5 (WINBIO_FINGER_UNSPECIFIED_POS_01)
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10: User S-1-5-21-394619333-3876782012-1672975908-3333 with 1 fingers:
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11: f5 (WINBIO_FINGER_UNSPECIFIED_POS_01)
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>>> db.del_record(11)
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>>> db.dump_all()
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8: User S-1-5-21-111111111-1111111111-1111111111-1000 with 1 fingers:
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9: f5 (WINBIO_FINGER_UNSPECIFIED_POS_01)
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10: User S-1-5-21-394619333-3876782012-1672975908-3333 with 0 fingers:
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>>>
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```
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### Identify a finger (scan)
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```
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>>> identify()
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Recognised finger f5 (WINBIO_FINGER_UNSPECIFIED_POS_01) from user S-1-5-21-111111111-1111111111-1111111111-1000
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Template hash: 36bc1fe077e59a3090c816fcf2798c30a85d8a8fbe000ead5c6a946c3bacef7b
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```
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## DBus service
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When started, DBus service will first try to initialize the device, then it will try to register itself with the
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[open-fprintd](https://github.com/uunicorn/open-fprintd) service. If `open-fprintd` is not available it will wait for it
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to come up.
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To start DBus service from the sources (useful for debugging):
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```
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PYTHONPATH=. ./dbus_service/dbus-service
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```
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## Debugging
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If you are curious you can enable tracing to see what flows in and out of device before and after encryption
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```
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>>> tls.trace_enabled=True
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>>> usb.trace_enabled=True
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>>> logging.basicConfig(level=logging.DEBUG)
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>>> db.dump_all()
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>tls> 17: 4b00000b0053746757696e64736f7200
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>cmd> 1703030050c00a7ff1cf76e90f168141b4bc519ca9598eacb575ff01b7552a3707be8506b246d5272cb119e7b8b3eccd991cb7d8387245953ff1da62cebfb07fae7e47b9b536fb1a82185cc9399d30625ee3c1451f
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<cmd< 1703030050b7a4a39e256bbe5a2589a6fbeec86057bead96f0b79ab6657dd9e851efaccddf9cd0108865aa98c510a1f8cd9b881b3166db553e5b4330c437f09daccbe261b259019774466ddb0d7f97fa67b6337329
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<tls< 17: 0000030002000b00000008004c000a004c0053746757696e64736f7200
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>tls> 17: 4a080000000000
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>cmd> 1703030040ef982e5d6c403ff636c44cd53e7d0f98c21f67ff3b5b80f53555e4547028bd4d17cf5b0539ac0489238f1f066b8ba849120380cf979088d6c63249c873868c95
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<cmd< 1703030090f16f4ed027f50103d5cf274a59323e5f25e084e21e4d42d4eab23abc867504ef80a700c775f03c0fafabee2e373fbf551d46e53ca957b86c53853a913e11c8cab98df41afc86af883b4e1b817024b212dbcdf1057a3bcdbc474381c5a5c37162167ff395e8102902c4e0d00b9b4931f0fa986ec3257c6bf2a5b55ea0b5349c035c20ed583522ac7ef9048e97a589a25e
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<tls< 17: 00000800010000004c000900f5000300780b030000001c000000010500000000000515000000c76b9f06c7353a42c7353a42e803000000000000000000000000000000000000000000000000000000000000000000000000000000000000
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>tls> 17: 4a0a0000000000
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>cmd> 1703030040b522c55b73480e0d71a322abf8b65d97c9b55e9930206c463f998886cda4410d1b00ab41ec5b213d2ac18bf3bf61ce817446f27d643f99aba5a1d4cb80d18461
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<cmd< 170303009061cef46670a21ca87043f1f4d55153eb46a19757de767d4ddbee736e2a775af63850a89ebe814b7e578979f1fb8a1c2133e0c6fa5b468cff9c731ef3f178b33334bdf64c03903dc2d95e9a16c656f1f8d06fa3431c3971607fec56f104ec7d4e73518705a289fac53fe54ddf33b30dad2b8c1fac67b7decf8c7f86dd843414e7f056a2ea8366611e5094c5491d5ade46
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<tls< 17: 00000a00000000004c00030000001c000000010500000000000515000000c5698517bcff12e72496b763050d000000000000000000000000000000000000000000000000000000000000000000000000000000000000
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8: User S-1-5-21-111111111-1111111111-1111111111-1000 with 1 fingers:
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9: f5 (WINBIO_FINGER_UNSPECIFIED_POS_01)
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10: User S-1-5-21-394619333-3876782012-1672975908-3333 with 0 fingers:
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>>>
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```
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