Research And Realization Of The Adaptation Technology For TPM2.0 Chip On BYT-CR Platform

The mobile internet has permeated all aspects of life along with the smart phone and tablet popularization.The traditional passivity “firewall and virus killing" protection of information security mechanism have been out of date when facing the rapid growth of the mobile Internet market,all kinds of hidden security issue may cause inestimable loss at any time.There is no hesitation to build the trusted computing system with an active immunity,active defense functions to protect national and personal security.Build china trusted computing system can speed up the transformation of China from big to powerful internet network country.Trusted platform module(TPM)is the basic hardware protect for the trusted computing system.It is a powerful weapon to resolve the mobile internet security issue by adapter the TPM in firmware in all kinds of platform architecture and provide trusted computing function.This dissertation research topic is based on adaptation a domestic TPM in Intel mainstream mobile platforms.The main contents include research the firmware architecture adaptation in the Intel mainstream mobile platform,develop the TPM2.0 bus driver in firmware,implement the trusted computing function and design the calling interface base on TPM2.0,verify TPM2.0 functional performance indicators meet the requirement from practical application.Follow overall architecture design,we select Minnow Max board environment as the project hardware platform which use Intel Baytrial-CR(BYT-CR)platform.The design and implementation of firmware architecture for TPM2.0 are followed the Unified Extensible Firmware Interface specification(short for UEFI),adaptation and architecture extend the Intel BYT-CR mobile platform firmware under the UEFI.Finished the architecture design for TPM2.0 on BYT-CR mobile platform after the analysis of the system requirement from hardware and software as well as all module function requirement.Detail defined the hierarchical structure between each module and all function module,as well as the interface definition for call up and down.Design and implementation the I2 C bus driver in firmware according to the TPM2.0 physic interface in order to implementation the data connectivity between TPM2.0 and BYT-CR platform.Implementation the seal for trusted computing feature and calling interface design for TPM2.0 to make sure the system security can meet the requirement from trusted computing system.Validation data transmission is stable and reliable by analysis and verification the waveform for I2 C communication protocol in firmware through the oscilloscope,and testing by analysis the debug information from serial port big data print in screen.Make sure the design for trusted computing interface and function meeting the original requirement and the performance indicators meeting the requirement from trusted computing business by batch testing the TPM2.0 command.Verify the stability of the authentication system meet the demand of practical engineering application by serial port pressure testing.Dissertation finished the adaptation for domestic TPM2.0 chip with I2 C interface base on Intel BYT-CR platform,fill the void on trusted computing in mobile firmware in our contry.Provide reference design for research and application development about trusted computing system at mobile network device,such as smart phone and tablet.Accordance with the national security strategy policy.This pioneering rearch have strong guidance value and exemplary role in firmware trusted computing industrialization.