https://github.com/jieter/python-lora

Decrypt LoRa payloads in python.
https://github.com/jieter/python-lora

Last synced: 7 days ago
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Decrypt LoRa payloads in python.

• Host: GitHub
• URL: https://github.com/jieter/python-lora
• Owner: jieter
• License: mit
• Created: 2016-03-07T10:27:45.000Z (almost 9 years ago)
• Default Branch: master
• Last Pushed: 2024-10-28T09:50:15.000Z (3 months ago)
• Last Synced: 2024-12-29T02:24:52.143Z (14 days ago)
• Language: Python
• Homepage:
• Size: 67.4 KB
• Stars: 67
• Watchers: 13
• Forks: 18
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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• awesome-lora - python-lora - Decrypt LoRa payloads in python (Tools)

README

        
# python-lora

Python wrapper for LoRa payloads from Thingpark/Actility, allowing decryption of the payload.

- Depends on [cryptography]

- Based on crypto code in [Lora-net/LoRaMac-node]

- Tested with python 3.8, 3.9, 3.10, 3.11

- Available on [pypi]

## Usage

`pip install python-lora`

[cryptography] requires [cffi] which in turn requires `libffi-dev` and `python-dev`.

```python

from lora.payload import LoRaPayload

xmlstr = '''

[...]

2[...]

[...][...]

'''

payload = LoRaPayload(xmlstr)

key = 'AABBCCDDEEFFAABBCCDDEEFFAABBCCDD'

dev_addr = '00112233'

plaintext = payload.decrypt(key, dev_addr)

```

You can also use `loramac_decrypt` without the XML wrapper to decode a hex-encoded `FRMPayload`:

```python

>>> from lora.crypto import loramac_decrypt

>>> payload = '11daf7a44d5e2bbe557176e9e6c8da'

>>> sequence_counter = 2

>>> key = 'AABBCCDDEEFFAABBCCDDEEFFAABBCCDD'

>>> dev_addr = '00112233'

>>> loramac_decrypt(payload, sequence_counter, key, dev_addr)

[222, 59, 24, 8, 7, 155, 237, 158, 103, 125, 93, 34, 161, 204, 33]

```

[cryptography]: https://cryptography.io/

[cffi]: https://cffi.readthedocs.org/en/latest/

[pypi]: https://pypi.python.org/pypi/python-lora

[Lora-net/LoRaMac-node]: https://github.com/Lora-net/LoRaMac-node/blob/master/src/mac/LoRaMacCrypto.c#L108