Succinct launches iPhone app to cryptographically verify photos

Cryptography company Succinct launched Zcam, an iPhone camera app that signs photos and videos at capture to help prove media authenticity in the AI era.

Cryptography company Succinct has launched Zcam, an iPhone camera app that cryptographically signs photos and videos at the moment of capture to help prove their authenticity.

The company said Thursday that Zcam embeds a tamper-evident record linking media to the device that captured it, allowing viewers to verify that content was not digitally altered or generated by artificial intelligence. 

According to Succinct, the app works by hashing raw image data and signing it using keys generated inside Apple’s Secure Enclave, a hardware-based security module. The resulting signature, along with capture metadata and attestation, is embedded into the file using the Coalition for Content Provenance and Authenticity (C2PA) standard, a framework for attaching tamper-evident provenance data to digital media.

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