fabiangroeger96 / parktang-legic

HSLU IoT & Blockchain Hackaton

---

Copyright (C) 2019 LEGIC (R) Identsystems AG, CH-8623 Wetzikon Restricted use for HSLU Hackathon 2019. All rights reserved!

The modules LEGIC_SM6300_Signature and DigitalSignature should contain all functions you need to know for the Hackathon.

Dependencies:

• python >= v3.5: uses builtin bytes and hex

Site-Packages:

• pyserial (latest): for serial communication with LEGIC SM6300
• ecdsa (latest): for signature verification

Use LEGIC_SM6300_Signature (LEGIC_SM6300_Signature.py) to create signatures using LEGIC SM6300 chip. The SM6300 will create signatures with the pre-loaded private key. Create digital-signatures:

signature = LEGIC_SM6300_Signature('/dev/ttyUSB0').create(b'your data')

Use DigitalSignature (DigitalSignature.py) to verify signatures created with LEGIC SM6300. Verify digital-signature:

valid = DigitalSignature.verify(b'your data', signature, pub_pem_path='public_key.pem')
assert valid is True

Make sure you use the correct public-key for the verification. The LEGIC USB-Stick (EVS) should be already labeled with its unique chip ID. The class LEGIC_SM6300 will print the chip ID to the console on every successful connect(). The corresponding key files are located under './keys/_public.pem' e.g. the public key for Chip-ID: "LEGIC-SM6300-1D37BCF9A62CBF08" is './keys/LEGIC-SM6300-1D37BCF9A62CBF08_public.pem'

Checkout main section in LEGIC_SM6300_Signature for example calls.