Intel BB5520UR Product Specification - Page 66
Trusted Platform Module TPM - Supported only on S5520HCT
![]() |
View all Intel BB5520UR manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 66 highlights
Functional Architecture Intel® Server Boards S5520HC, S5500HCV, and S5520HCT TPS 3.13 *Trusted Platform Module (TPM) - Supported only on S5520HCT 3.13.1 Overview Trusted Platform Module (TPM) is a hardware-based security device that addresses the growing concern on boot process integrity and offers better data protection. TPM protects the system start-up process by ensuring it is tamper-free before releasing system control to the operating system. A TPM device provides secured storage to store data, such as security keys and passwords. In addition, a TPM device has encryption and hash functions. The Intel® Server Board S5520HCT implements TPM as per TPM PC Client specifications revision 1.2 by the Trusted Computing Group (TCG). A TPM device is affixed to the motherboard of the server and is secured from external software attacks and physical theft. A pre-boot environment, such as the BIOS and operating system loader, uses the TPM to collect and store unique measurements from multiple factors within the boot process to create a system fingerprint. This unique fingerprint remains the same unless the pre-boot environment is tampered with. Therefore, it is used to compare to future measurements to verify the integrity of the boot process. After the BIOS complete the measurement of its boot process, it hands off control to the operating system loader and in turn to the operating system. If the operating system is TPMenabled, it compares the BIOS TPM measurements to those of previous boots to make sure the system was not tampered with before continuing the operating system boot process. Once the operating system is in operation, it optionally uses TPM to provide additional system and data security (for example, Microsoft Vista* supports Bitlocker drive encryption). 3.13.2 TPM security BIOS The BIOS TPM support conforms to the TPM PC Client Specific - Implementation Specification for Conventional BIOS, version 1.2, and to the TPM Interface specification, version 1.2. The BIOS adheres to the Microsoft Vista* BitLocker requirement. The role of the BIOS for TPM security includes the following: • Measures and stores the boot process in the TPM microcontroller to allow a TPM enabled operating system to verify system boot integrity. • Produces EFI and legacy interfaces to a TPM-enabled operating system for using TPM. • Produces ACPI TPM device and methods to allow a TPM-enabled operating system to send TPM administrative command requests to the BIOS. • Verifies operator physical presence. Confirms and executes operating system TPM administrative command requests. • Provides BIOS Setup options to change TPM security states and to clear TPM ownership. For additional details, refer to the TCG PC Client Specific Implementation Specification, the TCG PC Client Specific Physical Presence Interface Specification, and the Microsoft BitLocker* Requirement documents. 52 Revision 1.8 Intel order number E39529-013
![](/manual_guide/products/intel-s5520hct-product-specification-db60ece/66.png)