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Counterfeit chip makers could simply look up the chips and re-use the serial numbers? The idea is to use a chain of purchase records (purchase orders and invoi
by 11thEarlOfMar 5y ago
Counterfeit chip makers could simply look up the chips and re-use the serial numbers?
The idea is to use a chain of purchase records (purchase orders and invoices) to ensure that each transaction is recorded and unique, with the first transaction in the chain entered by the manufacturer.
- pests 5y agoThe physical product has to be linked to this chain of purchase records tho. How do you tell, given just a chip, that it has a corresponding chain of records? Whatever solution you give me, what stops counterfeiters from reuse as well?
- 11thEarlOfMar 5y agoThe business processes of the companies involved in each transaction would ensure the keys/tokens were associated with a physical inventory under their control. MRP systems can manage the warehouse & inventory. The chips themselves don’t have to be marked.
- nicbou 5y agoOnly store hashes then. You can check that the item is in the database, but not list its contents. We've been doing this for a long time with passwords.