AnyTone DMR stations have a significant advantage over some of their Chinese competitors: They are 100% compatible with the encryption used by Motorola (Enhanced Privacy RC4/ARC4 or AES) and by members of the DMRA (DMR Association), this helps ensure the interoperability of communications even when they are encrypted.
In 2021, I discovered a weaknesses which made this encryption more vulnerable: The initialization vectors (IV/MI) used were fixed whereas they should be random... their values being known in advance, this weakened the encryption implemented...
The new firmware V3.03 fix this vulnerability, I prove it to you through this video thanks to an analysis of DMR frames using an SDR and DSD (Digital Speech Decoder) receiver.
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Video content:
- 00:00 Introduction
- 01:44 Demonstration of DMRA RC4 encrytion with DSD
- 03:15 Demonstration of DMRA AES256 encryption with DSD
- 04:15 Conclusion / The final word
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Source code of DSD (Digital Speech Decoder) :
github.com/Lou...
Binaries pre-compiled for Windows (using Cygwin) :
www.1geniesup....
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The video showing the vulnerability on DMRA RC4 and AES256 encryption due to the use of a known and fixed IV on each new DMR voice transmission
• 🇺🇸 🇬🇧 AnyTone AT-D878U...
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The latest AnyTone upgrade can be downloaded here :
www.anytone.ne...
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Follow me / Suivez-moi :
👉 / louiserigherve
👉 / louiserigherve
👉 www.1geniesupt...
👉 www.1geniesup.fr/
👉 / louiserigherve
👉 gettr.com/user...
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Mots clefs / Keywords :
PMR, DMR, dPMR, NXDN, APCO P25, ICOM, Motorola, Hytera, Kenwood, Airbus, AnyTone, TETRAPOL, TETRA, ANTARES, ACROPOL, Mission Critical, Talkie-Walkie, PTT, Push To Talk, Radiocommunications, D878, RC4, ARC4, Enhanced Privacy, MotoTRBO, DMRA, Encryption, Hacking, Initialization Vector, Weakness
28 сен 2024
