gtec_attest
Contains only public keys. The signing keys live in the amplifier packages.
Verification of g.tec amplifier attestations. An amplifier package signs a challenge with a private key held in its compiled layer; this package checks that signature against a public key it carries.
It returns a verdict about a device — never a permission, tier or entitlement. Mapping verdicts onto entitlements is the consuming product's job.
Install
pip install gtec_attest
Wheels are published for Windows, macOS (universal2) and manylinux across CPython 3.10 to 3.14.
Use
import gtec_attest
nonce = gtec_attest.mint_nonce() # 32 bytes, once per device
attestation = amp.attest(nonce) # 67 bytes from the amplifier
verdict = gtec_attest.verify(
attestation,
serial=amp.serial_number, # byte-identical to the handle
nonce=nonce,
)
if verdict:
... # genuine device
else:
log.warning("unattested source: %s", verdict.reason.name)
verify() is a pure function: no I/O, no clock, no network.
| Field | Meaning |
|---|---|
verified |
True only if the signature checks out against an accepted key |
key_id |
The key ID carried in the attestation |
serial |
Echo of the serial you passed in |
reason |
OK, BAD_SIGNATURE, UNKNOWN_KEY_ID, MALFORMED, SERIAL_MISMATCH, RETIRED_KEY |
Mint one nonce per device per pipeline start with mint_nonce(). Never reuse
one and never cache one.
Integration notes
Products that enforce on the verdict should not rely on importing this module. Contact g.tec for the integration component and guidance.
© g.tec medical engineering GmbH — support@gtec.at
1 maintainer
Release files for gtec-attest 0.2.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Built distributions (wheels)
Total release size: 844.4 kB
Release files / gtec_attest-0.2.0-cp314-cp314-win_amd64.whl
| Download URL | gtec_attest-0.2.0-cp314-cp314-win_amd64.whl |
|---|---|
| Size | 28.3 kB |
| Tags | CPython 3.14 Windows x86-64 |
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| Tags | CPython 3.14 macOS 10.15+ universal2 (ARM64, x86-64) |
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