alt Hacker NewsThere used to be - probably still are - cameras that would digitally sign all their images. Used in crime scenes? Maybe we will end up seeing wider adoption of this, despite the privacy implications. Hackers attention then will focus (once again) on the certificate supply chain and crypto hardware.
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aorloff • yesterday at 9:30 PM
I imagine in this age of blockchains you could embed into a media file a signature that proved it was no older than the timestamp of when it occurred, the digital equivalent of a hostage-proof-of-life photo with a recent newspaper
But I don't know of a cryptographic mechanism to ensure that a digital image is not more recent than a particular time
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I worked for a company that made these. We sold expensive software to the FBI.
Took about six months for someone to crack the hash.