3 ms·

Can anyone offer links to more technical details about the approaches described in this article?

• helsinkiandrew 4y ago
  The companies/apps are here: https://www.eyewitness.global/ https://www.eyewitness.global/ https://guardianproject.info/apps/org.witness.proofmode/ https://guardianproject.info/apps/org.witness.proofmode/ I think all these are really doing is ensuring an image isn't modified. Signing/Creating a hash of the image and metadata (timestamp and perhaps location) means that a change after that can be detected. If you trust the people making the apps - or perhaps the companies running repositories they use - you could then trust that the photo was taken because the app is signing it when it is taken. Ensuring when and where the photo was taken does seem harder to prove as the time and location of the device can be fooled.
  • beardyw 4y ago
    Hard to imagine why a hash and false meta data couldn't be created for a doctored picture.
    • helsinkiandrew 4y ago
      Exactly - but i think these apps are hoping to become 'trusted' that a picture taken with them can't be tampered with easily from the photo sensor to the cloud.