蘋果公司發布 Apple Reference Image 功能,適用於 iPhone 18 Pro 系列。該功能在拍攝時通過 SEPC 安全處理器對照片進行硬體級簽名與時間戳綁定,形成不可偽造的“數字負片”,確保圖像來自真實感測器、防篡改並對抗 AI 偽造圖片。文章作者、來源:AIBase
蘋果公司於 9 月 15 日發佈博文,詳細介紹了在 iPhone 18 Pro、iPhone 18 Pro Max 等機型上引入的 Apple Reference Image 功能,支援像素級標註真實圖像數據。

按下快門即在 SEP 內簽名,形成“數位負片”
Apple Reference Image 是一種可選模式(Reference mode),在拍攝時對照片進行硬體級別的證明與時間戳綁定,確保圖像來自真實感測器,防篡改並對抗 AI 偽造圖片,適用於新聞機構與證據留存場景。
在技術實現方面,用戶按下快門按鈕後,系統會在 SEP(Secure Enclave Processor)中簽名關鍵元數據(如焦段、數位變焦等),形成不可偽造的「數位負片」資訊。時間戳方面,系統提供拍攝的下界與上界時間戳,並通過加密時間戳服務嵌入到參考圖像中,確保圖像的時間準確性與可驗證性。
After signing at the sensor level, Apple also works with the Private Cloud Compute verification chain to ensure tamper-proof integrity throughout the entire chain while protecting user privacy and preventing exposure of personal information.
從「拍後簽名」變為「拍時簽名」
In use cases such as news organizations, evidence preservation, and scenarios requiring trustworthy image sources, this feature combats AI-generated content by providing an audit trail of “authentic sources.” Compared to traditional metadata-based evidence systems (which typically sign after editing), Apple Reference Image performs hardware-level signing and timestamp binding at the moment of capture, making it theoretically harder to tamper with and enhancing credibility.
