Project Summary
pylibsdm is a Python library (SDK) for handling Secure Dynamic Messaging (SDM) of NFC cards with Python.
Secure Dynamic Messaging is a technology that adds security features to NFC tags using standard mechanisms. While standard NFC data (so-called NDEF messages, e.g. texts, URLs, etc.) can be written to any compatible tag, SUN-capable tags can cryptographically sign and optionally also encrypt parts of the data, which can then still be read by any standard NFC reader.
In a Nutshell, pylibsdm...
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took an estimated 1 years of effort (COCOMO model)
starting with its first commit in June, 2023
ending with its most recent commit 11 months ago
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GNU Lesser General Public License v2.1 or later
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These details are provided for information only. No information here is legal advice and should not be used as such.
Project Security
Vulnerabilities per Version ( last 10 releases )
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30 Day SummaryMay 18 2026 — Jun 17 2026
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12 Month SummaryJun 17 2025 — Jun 17 2026
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