> Is this a flaw in the cryptography itself?
No. The underlying cryptographic algorithms (3DES and AES-128) remain secure. The vulnerabilities arise from:
Protocol design choices that allow unauthenticated memory writes after initial authentication
Lack of atomicity when writing cryptographic keys across multiple memory pages
Widespread misconfiguration in real-world deployments (unlocked memory, static keys)
Non-NXP compatible chips with severely flawed random number generators
alt Hacker News
> Is this a flaw in the cryptography itself? No. The underlying cryptographic algorithms (3DES and AES-128) remain secure. The vulnerabilities arise from:
Protocol design choices that allow unauthenticated memory writes after initial authentication Lack of atomicity when writing cryptographic keys across multiple memory pages Widespread misconfiguration in real-world deployments (unlocked memory, static keys) Non-NXP compatible chips with severely flawed random number generators