Security architecture comprises a secure MCU with active shield and environmental monitoring, providing tamper-resistant storage for Matter certificates, keys, and network credentials isolated from host processors.
The implementation includes NIST 800-90B-compliant TRNG for cryptographic random number generation, supporting ECDSA with SHA-256, ECDH, AES-CCM, and AES-CTR algorithms for authentication, key exchange, confidentiality, and integrity operations. The chip fully supports AES-128 encryption which aligns with Matter’s mandatory security protocols for data protection.
Built on Common Criteria-certified hardware targeting GlobalPlatform SESIP Level 3, the chip offers over 3 KB non-volatile memory and I²C interface up to 400 kHz for host connectivity and Matter OTA firmware updates. The device supports data rates from 106 kbps to 848 kbps for NFC communication, complying with ISO/IEC 14443 Type A and NFC Forum Type 4 Tag standards. The device enables batteryless commissioning capability through NFC energy harvesting, eliminating the need for device power during initial setup.
References
- https://www.cnx-software.com/2025/11/26/stmicro-st25da-c-first-nfc-matter-chip/
- https://lunar.computer/stmicroelectronics-launches-nfc-chip-for-tap-to-20251126
- https://www.hackster.io/news/stmicroelectronics-unveils-market-first-matter-1-5-compatible-nfc-chip-for-one-tap-on-boarding-3c5dfa443369
- https://circuitdigest.com/news/stmicroelectronics-brings-first-matter-nfc-chip-for-simplified-smart-home-device-onboarding
- https://intellectia.ai/news/stock/stmicroelectronics-launches-first-matter-nfc-chip-streamlining-smart-home-device-integration
- https://www.microcontrollertips.com/matter-compatible-nfc-tag-supports-cryptographic-operations-via-energy-harvesting/
- https://newsroom.st.com/media-center/press-item.html/p4739.html
- https://www.st.com/en/wireless-connectivity/matter-products.html
- https://www.eenewseurope.com/en/st-introduces-first-secure-nfc-chip-for-matter-1-5-smart-home-onboarding/
- https://www.st.com/content/st_com/en/campaigns/matter-commissioning-with-nfc-z21.html
