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Learning iOS Forensics - Second Edition by Pasquale Stirparo, Mattia Epifani

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Unique device identifier

Every single iDevice produced is identified by a Unique Device ID (UDID), as is explained in The iPhone Wiki (http://theiphonewiki.com/wiki/UDID). It can be calculated as the SHA-1 hash of a particular 60- or 59-character long string that can be obtained as follows:

  • An 11-character or 12-character long (on newer devices) serial number (exactly like it is written in the Settings app)
  • A 15-character long IMEI number without spaces (on older devices), empty string for iPod touch and the Wi-Fi model iPad devices, or a 13-character ECID in decimal with no leading zeroes (on newer devices)

    Note

    The ECID is the Electronic Chip ID. For more information, refer to https://theiphonewiki.com/wiki/ECID.

  • A 17-character long Wi-Fi MAC address ...

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