Trusted Platform Module (TPM) and other protocols and components of trust in a computer or computer network

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Status of Trusted Computing and Remote Attestation deployment

Hardware support for various client-side controls based on Trusted Computing (Wikipedia) has been evolving over the years, e.g. TCPM, TPM, TXT (LaGrande, DRTM). I've heard of one practical ...
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3answers
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Using TPM with DMcrypt?

Is it possible to use TPM for storage of some private key? It's not a full-disk encryption , I want it to be compatible with existing LUKS, just add another key, and store it in the TPM.
14
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2answers
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Tamper-proof BIOS password & settings storage with Trusted Platform Module?

In the olden days, one could trivially bypass BIOS passwords on most PCs by removing the BIOS battery and clearing the CMOS. My question is: On modern PCs equipped with a Trusted Platform Module ...
9
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2answers
361 views

How do you know a computer is not compromised when you first get it?

How do you know a computer is not compromised when you first get it? How do you know that manufacturers have not intentionally built vulnerabilities into the system?
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3answers
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Can someone detect the URL an android app uses?

I have an android app that makes HTTPS connection to specific URL. Is there a way to keep this URL secret? I know that the IP address and the port number of that connection can be detected, but what ...
14
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3answers
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How secure is Microsoft-mandated UEFI Secure Boot, really?

I've read a few articles recently about the UEFI Secure Boot feature, and how Microsoft will be requiring it to be enabled by default on all Windows 8 certified x86 systems. In theory, it sounds like ...
9
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4answers
184 views

How to trust ICs?

While it is theoretically possible to thoroughly examine the source code of Open Source Software to check for backdoors (neglecting a Ken Thompson hack), and given sufficiently adequate knowledge in ...
5
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1answer
739 views

TPM bootstrap process

Assume that the file partition where the PC operating system and user data reside are sealed by a number of PCRs (Platform Configuration Registers) dedicated to BIOS measurements. What happens during ...
1
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2answers
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Which PCR we can extend by using our own code?

As there are 24 PCR's in TPM 1.2 specification. Some of these PCRs are reserved and cannot be extended by user's code. Below are the PCR Index with their usage: 0 - CRTM, BIOS and Platform Extensions ...
3
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2answers
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How to use TPM to perform platform authentication?

I am currently looking at TPM (Trusted Platform Module) and wondering how does TPM offer platform authentication. Suppose a legal host is deployed on the cloud. How do I use TPM to assure that the ...
7
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1answer
605 views

What prevents the Intel TXT boot loader from being maliciously altered?

From my understanding of Intel TXT, the technology can be used to put the processor in a trusted state where measurements can be performed. My understanding looks something like this, where I believe ...
6
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2answers
832 views

Does the ARM TrustZone technology support sealing a private key under a code hash?

One of the extremely valuable functions of a Trusted Platform Module (TPM) chip is its ability to seal a private key under the hash of the code that will use it. This means that one can create a ...
6
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2answers
991 views

TPM and storage of keys

A TPM hardware device has very limited non-volatile protected memory just sufficient to store the EK (Endorsement Key) and SRK (Storage Root Key). How does a TPM allow nearly unlimited number of ...
5
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3answers
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Does any tablet support remote attestation?

Some PCs come with a TPM. One of the nifty capabilities of TPMs is the ability to perform remote attestation. Remote attestation allows your computer to tell a third computer what software your ...
3
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2answers
397 views

Is it possible to share BitLocker decryption keys between multiple TPMs?

The TPM specification mentions that some keys are migratable, i.e. transferable to another TPM. Does this mean that it would be possible to share (transfer) a BitLocker decryption key between several ...