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That shortfall is changing with firmware-based implementations of TPM. But it adds cost and complexity to system designs, which means that a lot of devices that could benefit from this level of security, simply don’t have it. TPM isolates the security infrastructure from the host system, making it exceedingly difficult to spoof, tamper or defeat. Implementing TPM in dedicated hardware has a key benefit.
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If a change is detected, TPM prevents the compromised files or software from loading, halting attacks before they can start. A dedicated cryptographic microprocessor processes key data and verifies the integrity of low-level system assets like boot files and system firmware. TPM works by storing protected key information in a tamper-proof chip that includes a unique Endorsement Key baked into the silicon at manufacture -like a digital fingerprint -to authenticate host system hardware. TPM is currently in version 2.0, and its role has become more vital as cyber threats continue to target the lowest levels of system operation-including the Master Boot Record, system firmware and operating system files -where traditional anti-malware solutions can be vulnerable. The result: PTT is being deployed on low-power PCs, tablets and other devices that in the past could not bear the additional cost, complexity, power consumption or required physical space that comes with hardware-based TPM Instead they rely on secure access to the system’s host processor and memory to perform low-level system authentication and verification. The difference is, computers with Intel PTT don’t require a dedicated processor or memory. To your operating system and applications, PTT looks and acts like TPM. This model for system security got a face-lift when Intel introduced the Intel Platform Trust Technology (PTT) architecture, which implements TPM in system firmware.
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TPM established a set of standards and interfaces that enable system makers to bake their digital bona fides into system hardware.īy employing unique cryptographic keys burned into physical media soldered directly onto the motherboard, TPM creates what is known as the “root of trust.” From that foundation, operating system makers like Microsoft can enable secure, whole-disk encryption to lock up data even if a disk is removed, and enable system checks that verify low-level boot code before allowing it to execute. For years, the last word in securing personal computers, industrial PCs and servers has been the Trusted Platform Module (TPM) specification. In the last few years, Intel Platform Trust Technology (PTT) has truly arrived.