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by Const-me
3335 days ago
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Depends. If it’s contaminated ‘coz expired, it’s doable. Many devices have accurate real-time clocks even offline, e.g. GPS. It’s easy to include the expiry date in that cryptographically-signed data. BTW, Kerberos protocol does similar things with their timestamps. If however it’s contaminated just because the producer decided to recall a batch of their product, then yes, a centralized server is a good choice. |
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