Voting and X-Ray machines?
Posted Oct 5, 2006 8:27 UTC (Thu) by nim-nim
In reply to: Voting and X-Ray machines?
Parent article: Similar in spirit?
> Voting machines? X-Ray machines? The parties who own such devices can and
> probably should make use of tamper resistance features.
And surprise the GPLv3 actually allows it.
What it forbids is the manufacturer keeping the key for himself (to take an analogy : you can build a password auth in your product, but you can't hardcode a password you do not share downstream. The direct result obviously is no hardcoded password and the owner choosing whatever password he likes)
For voting machines for example there are *many* documented occurences of the manufacturer stealthily changing the software after the customer had audited one version. No DRM-as-forbidden-by-the-GPLv3 would have helped as they leave the key control in the manufacturer's hands.
For X-rays-machines displaying a "warranty void if uncontroled software uploaded" during the update process is the strict equivallent of the tamper-proof seals which have served the industry well against hardware tampering for years. Again, no DRM-as-forbidden-by-the-GPLv3 is needed.
DRM-as-forbidden-by-the-GPLv3 are the analog of security locks whose keys are kept by the manufacturer (and not distributed with the product). Did you see one of those in actual life ? Stangely this level of protection was never justified in the no-software world, but once it's DRMized it "makes sense"
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