Long-time Slashdot reader BrianFagioli is announcing that he's released a new iPhone app that creates a cryptographic witness for photos without uploading the original image.
The app hashes the file, signs the hash using a dedicated identity stored in Apple Keychain, and publishes the witness to Nostr relays while keeping the photo inside the app unless the user chooses to export it.
Rather than trying to determine whether a scene was genuine, the app β named Veridenz β answers a narrower question, by verifying whether a photo file matches the one that was originally witnessed.
Users do not need a Nostr account because the app creates its own signing identity, keeping private documentation separate from a public Nostr profile.
"The developer does not collect any data from this app," says its page in Apple's iPhone store. The app's tagline is "Capture. Prove. Verify."
With Advanced Data Protection for iCloud, users have the choice to further protect important iCloud data even in the case of a data breach.
Apple has filed a legal complaint with the UKβs Investigatory Powers Tribunal seeking to overturn a secret government order requiring the company to enable access to encrypted customer data stored in its cloud services.The challenge, reported in early March 2025, targets a technical capability notice (TCN) issued by the Home Office in January under the Investigatory Powers Act 2016. The notice reportedly directed Apple to create the technical means for UK law enforcement and intelligence agencies to access data protected by the companyβs Advanced Data Protection (ADP) feature: an optional end-to-end encryption layer for iCloud backups, photos, notes and other files that even Apple itself cannot normally decrypt, according to Financial Times.
Apple responded by withdrawing ADP for UK users rather than comply, stating that it would not build a βback doorβ or master key into its products or services. The company has long argued that creating such access points would undermine security for all users and could be exploited by malicious actors. Standard iCloud encryption remains available and is accessible to Apple when presented with a valid legal warrant, but ADP provides a higher level of protection that the firm says it cannot and will not weaken.
The case is understood to be the first major legal test of the Investigatory Powers Actβs provisions allowing authorities to compel technology companies to maintain capabilities to access encrypted material. The tribunal, an independent body that reviews complaints against the UKβs security and intelligence agencies, could quash the notice if it finds the order unlawful. Proceedings were expected to begin relatively quickly, though the government was anticipated to seek restrictions on public disclosure on national security grounds.
The dispute highlights the long-running tension between tech firmsβ commitment to strong encryption and governmentsβ desire for lawful access in cases involving terrorism, serious crime or national security. Privacy advocates have warned that any mandated vulnerability in widely used systems could have global repercussions, while UK authorities maintain that such powers are essential for public safety and are subject to legal safeguards.Apple has consistently maintained that it has never built backdoors into its systems and will not do so. The outcome of the tribunal challenge could set an important precedent for how encryption and government surveillance powers interact under UK law.
MacDailyNews Take: Weβve been fairly clear on this subject for many years:
Itβs not enough that every Brit alive has a government camera shoved up their ass 24/7/365? The UK has already slipped far down the slope that they ought to rename the place Airstrip One. β MacDailyNews, November 3, 2015
Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety. β Benjamin Franklin
The current batshit insane βleadershipβ of Airstrip One is having yet another crisis of confidence. β MacDailyNews, February 7, 2025
Censorship reflects a societyβs lack of confidence in itself. β Potter Stewart
MacDailyNews Note: Appleβs Advanced Data Protection for iCloud is an optional setting that offers Appleβs highest level of cloud data security. If you choose to enable Advanced Data Protection, the majority of your iCloud data β including iCloud Backup, Photos, Notes, and more β is protected using end-to-end encryption. No one else can access your end-to-end encrypted data, not even Apple, and this data remains secure even in the case of a data breach in the cloud.
How to turn on Advanced Data Protection for iCloud
On Mac
Choose Apple menu ο£Ώ > System Settings.
Click your name, then click iCloud.
Click Advanced Data Protection, then click Turn On.
Follow the onscreen instructions to review your recovery methods and enable Advanced Data Protection.
On iPhone and iPad
Open the Settings app.
Tap your name, then tap iCloud.
Scroll down, tap Advanced Data Protection, then tap Turn on Advanced Data Protection.
Follow the onscreen instructions to review your recovery methods and enable Advanced Data Protection.
More info about Appleβs Advanced Data Protection for iCloud here.
β Please help support MacDailyNews β and enjoy subscriber-only articles, comments, chat, and more β by subscribing to our Substack: macdailynews.substack.com. Thank you!
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