Developer reverse engineers Apple’s private AirPlay key

Developer James Laird has reverse engineered Apple’s private AirPlay key, opening the door to third-party AirPlay-enabled AirPort Express emulators. In a blog post announcing the release of ShairPort, an open-source AirPort Express emulator, Laird explains that Apple used a public-key crypto scheme in the AirPort Express, hiding a private key inside. Laird ended up opening the AirPort Express, dumping the ROM, and reverse engineering the keys out of it to achieve his goal. As noted by Mac Rumors, third-party apps allowing users to stream audio to an AirPort Express or other AirPlay devices have previously been available, but none were able to accept incoming audio streams. In addition, it seems unlikely that hardware manufacturers would want to use the key, as it is possible to become an officially licensed AirPlay partner instead.

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