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USB 3.0 write blocker Members: Chen Zhao Elphas Sang Yan Fang Advisors: Dr. Zhao Zhang Client:

USB 3.0 write blocker Members: Chen Zhao Elphas Sang Yan Fang Advisors: Dr. Zhao Zhang Client: Electronic Crime Institute - Des Moines Area Community College March, 22, 2011. High-level design. Project goal: Data filtering on programmable development kit Concept sketch

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USB 3.0 write blocker Members: Chen Zhao Elphas Sang Yan Fang Advisors: Dr. Zhao Zhang Client:

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  1. USB 3.0 write blocker Members: Chen Zhao Elphas Sang Yan Fang Advisors: Dr. Zhao Zhang Client: Electronic Crime Institute - Des Moines Area Community College March, 22, 2011

  2. High-level design • Project goal: Data filtering on programmable development kit • Concept sketch SuperSpeed USB 3.0 to Serial ATA Bridge + writing block

  3. High-level design • Functional decomposition • USB 3.0 to SATA adapter • Support for Mass-Storage Devices Compatible With the ATA/ATAPI-8 Specification • UASP protocol compliant mass storage device suitable for bridging hard disk drives (HDD) • Auto-load firmware (boot code)

  4. Design tradeoffs • Firmware configuration simplifies the hardware design procedure • Integrated ARM Cortex M3 Core used for USB 3.0 superspeed transfer

  5. Technology platforms • TUSB9260 SuperSpeed USB 3.0 to Serial ATA Bridge • Features • SuperSpeed USB 3.0 Compliant • USB Class Support (USB Mass Storage Class Bulk-Only Transport ) • SATA Interface • Integrated ARM Cortex M3 Core

  6. Detailed design • Block diagram

  7. Firmware design module • Behavioral module I/O memory mapping dataflow control • Data memory module booting code and auto-load program • Device interface module AHCI and USB device controller

  8. Testing and Evaluation plan • Test case selection: prototype of the project • Basic requirement: a write blocker shall not transmit any command on a protected storage device that modifies the data • Test environment(subject to change): Intel X58 SATA 6Gb/s USB 3.0 ATX Intel Motherboard Intel® Core™2 Duo processor E8000 Hard Disk Drive: Hitachi 7K3000 7200RPM SATA HD

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