As the article states, the scanning only occurred if you had iCloud Photos enabled. From what I recall, it worked like:
1. Use on device ML to scan for child porn before iCloud Photos upload.
2. If not found, issue a cryptographic ticket for iCloud upload and include in upload request.
…the whole point of Apple’s scheme as far as I know was to keep as much of the processing on device as possible while also keeping illegal content off of their cloud servers.
As the article states, the scanning only occurred if you had iCloud Photos enabled. From what I recall, it worked like:
1. Use on device ML to scan for child porn before iCloud Photos upload.
2. If not found, issue a cryptographic ticket for iCloud upload and include in upload request.
…the whole point of Apple’s scheme as far as I know was to keep as much of the processing on device as possible while also keeping illegal content off of their cloud servers.