#tdx — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #tdx, aggregated by home.social.
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Aviation weather for Trat airport (Thailand) is “VTBO 110400Z 03011KT 9999 FEW020 SCT100 33/22 Q1014” : See what it means on https://www.bigorre.org/aero/meteo/vtbo/en #tratairport #airport #thailand #vtbo #tdx #metar #aviation #aviationweather #avgeek vl
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Aviation weather for Trat airport (Thailand) is “VTBO 110400Z 03011KT 9999 FEW020 SCT100 33/22 Q1014” : See what it means on https://www.bigorre.org/aero/meteo/vtbo/en #tratairport #airport #thailand #vtbo #tdx #metar #aviation #aviationweather #avgeek vl
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Aviation weather for Trat airport (Thailand) is “VTBO 110400Z 03011KT 9999 FEW020 SCT100 33/22 Q1014” : See what it means on https://www.bigorre.org/aero/meteo/vtbo/en #tratairport #airport #thailand #vtbo #tdx #metar #aviation #aviationweather #avgeek vl
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Aviation weather for Trat airport (Thailand) is “VTBO 110400Z 03011KT 9999 FEW020 SCT100 33/22 Q1014” : See what it means on https://www.bigorre.org/aero/meteo/vtbo/en #tratairport #airport #thailand #vtbo #tdx #metar #aviation #aviationweather #avgeek vl
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Aviation weather for Trat airport (Thailand) is “VTBO 110400Z 03011KT 9999 FEW020 SCT100 33/22 Q1014” : See what it means on https://www.bigorre.org/aero/meteo/vtbo/en #tratairport #airport #thailand #vtbo #tdx #metar #aviation #aviationweather #avgeek vl
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Aviation weather for Trat airport (Thailand) is “VTBO 180500Z 24005KT 7000 FEW020 28/24 Q1010” : See what it means on https://www.bigorre.org/aero/meteo/vtbo/en #tratairport #airport #thailand #vtbo #tdx #metar #aviation #aviationweather #avgeek vl
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Aviation weather for Trat airport (Thailand) is “VTBO 180500Z 24005KT 7000 FEW020 28/24 Q1010” : See what it means on https://www.bigorre.org/aero/meteo/vtbo/en #tratairport #airport #thailand #vtbo #tdx #metar #aviation #aviationweather #avgeek vl
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Aviation weather for Trat airport (Thailand) is “VTBO 180500Z 24005KT 7000 FEW020 28/24 Q1010” : See what it means on https://www.bigorre.org/aero/meteo/vtbo/en #tratairport #airport #thailand #vtbo #tdx #metar #aviation #aviationweather #avgeek vl
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Aviation weather for Trat airport (Thailand) is “VTBO 180500Z 24005KT 7000 FEW020 28/24 Q1010” : See what it means on https://www.bigorre.org/aero/meteo/vtbo/en #tratairport #airport #thailand #vtbo #tdx #metar #aviation #aviationweather #avgeek vl
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Aviation weather for Trat airport (Thailand) is “VTBO 180500Z 24005KT 7000 FEW020 28/24 Q1010” : See what it means on https://www.bigorre.org/aero/meteo/vtbo/en #tratairport #airport #thailand #vtbo #tdx #metar #aviation #aviationweather #avgeek vl
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La @upc.edu arriba a les 6.000 tesis al repositori #TDX amb: 📓 "Neural network-based data processing for satellite imagery in small satellite earth observation missions" 🧑🎓 David Llaveria Godoy 📡 Teoria del Senyal i Comunicacions 👉 http://hdl.handle.net/10803/695367
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Aviation weather for Trat airport (Thailand) is “VTBO 120400Z 24003KT 8000 VCSH FEW016CB SCT020 31/27 Q1011” : See what it means on https://www.bigorre.org/aero/meteo/vtbo/en #tratairport #airport #thailand #vtbo #tdx #metar #aviation #aviationweather #avgeek vl
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Aviation weather for Trat airport (Thailand) is “VTBO 120400Z 24003KT 8000 VCSH FEW016CB SCT020 31/27 Q1011” : See what it means on https://www.bigorre.org/aero/meteo/vtbo/en #tratairport #airport #thailand #vtbo #tdx #metar #aviation #aviationweather #avgeek vl
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Aviation weather for Trat airport (Thailand) is “VTBO 120400Z 24003KT 8000 VCSH FEW016CB SCT020 31/27 Q1011” : See what it means on https://www.bigorre.org/aero/meteo/vtbo/en #tratairport #airport #thailand #vtbo #tdx #metar #aviation #aviationweather #avgeek vl
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Aviation weather for Trat airport (Thailand) is “VTBO 120400Z 24003KT 8000 VCSH FEW016CB SCT020 31/27 Q1011” : See what it means on https://www.bigorre.org/aero/meteo/vtbo/en #tratairport #airport #thailand #vtbo #tdx #metar #aviation #aviationweather #avgeek vl
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Aviation weather for Trat airport (Thailand) is “VTBO 120400Z 24003KT 8000 VCSH FEW016CB SCT020 31/27 Q1011” : See what it means on https://www.bigorre.org/aero/meteo/vtbo/en #tratairport #airport #thailand #vtbo #tdx #metar #aviation #aviationweather #avgeek vl
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Aviation weather for Trat airport (Thailand) is “VTBO 120200Z 06002KT 7000 FEW020 30/28 Q1012” : See what it means on https://www.bigorre.org/aero/meteo/vtbo/en #tratairport #airport #thailand #vtbo #tdx #metar #aviation #aviationweather #avgeek vl
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Aviation weather for Trat airport (Thailand) is “VTBO 120200Z 06002KT 7000 FEW020 30/28 Q1012” : See what it means on https://www.bigorre.org/aero/meteo/vtbo/en #tratairport #airport #thailand #vtbo #tdx #metar #aviation #aviationweather #avgeek vl
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Aviation weather for Trat airport (Thailand) is “VTBO 120200Z 06002KT 7000 FEW020 30/28 Q1012” : See what it means on https://www.bigorre.org/aero/meteo/vtbo/en #tratairport #airport #thailand #vtbo #tdx #metar #aviation #aviationweather #avgeek vl
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Aviation weather for Trat airport (Thailand) is “VTBO 120200Z 06002KT 7000 FEW020 30/28 Q1012” : See what it means on https://www.bigorre.org/aero/meteo/vtbo/en #tratairport #airport #thailand #vtbo #tdx #metar #aviation #aviationweather #avgeek vl
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Aviation weather for Trat airport (Thailand) is “VTBO 120200Z 06002KT 7000 FEW020 30/28 Q1012” : See what it means on https://www.bigorre.org/aero/meteo/vtbo/en #tratairport #airport #thailand #vtbo #tdx #metar #aviation #aviationweather #avgeek vl
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This is a great paper on the status of remote attestation of confidential VMs in public clouds. tl;dr None allow you to independently verify that you run the OS you think you run. But shoutout to AWS for having a reproducible build of their firmware! https://systex24.github.io/papers/systex24-final21.pdf #tdx #sev #aws #azure #gcp
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And, once again, "trusted computing" should not be trusted…
L. Wilke et al, "TDXdown: Single-Stepping and Instruction Counting Attacks against Intel TDX"¹
[…]
Intel recently launched Intel TDX, its second generation TEE, which protects whole virtual ma- chines (VMs). To minimize the attack surface to side-channels, TDX comes with a dedicated single-stepping attack countermeasure.
In this paper, we systematically analyze the single-stepping coun- termeasure of Intel TDX and show, for the first time, that both, the built-in detection heuristic as well as the prevention mechanism, can be circumvented. We reliably single-step TDX-protected VMs by deluding the TDX security monitor about the elapsed processing time used as part of the detection heuristic. Moreover, our study reveals a design flaw in the single-stepping countermeasure that turns the prevention mechanism against itself: An inherent side- channel within the prevention mechanism leaks the number of instructions executed by the TDX-protected VM, enabling a novel attack we refer to as StumbleStepping. Both attacks, single-stepping and StumbleStepping, work on the most recent Intel TDX enabled Xeon Scalable CPUs.Using StumbleStepping, we demonstrate a novel end-to-end at- tack against wolfSSL’s ECDSA implementation, exploiting a con- trol flow side-channel in its truncation-based nonce generation algorithm. We provide a systematic study of nonce-truncation im- plementations, revealing similar leakages in OpenSSL, which we exploit with our single-stepping primitive. Finally, we propose de- sign changes to TDX to mitigate our attacks.
[…]
#TDX #TrustedComputing #Intel
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¹ https://uzl-its.github.io/tdxdown/ -
Taurus, Aktionariat partner to enable trading of tokenized shares - Taurus and Aktionariat’s collaboration will allow Swiss SMEs to tokenize... - https://cointelegraph.com/news/taurus-aktionariat-tokenize-sme-shares-tdx #tokenizedshares #realunitschweiz #aktionariat #blockchain #swisssmes #liquidity #ethereum #fintech #taurus #tdx
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Taurus, Aktionariat partner to enable trading of tokenized shares - Taurus and Aktionariat’s collaboration will allow Swiss SMEs to tokenize... - https://cointelegraph.com/news/taurus-aktionariat-tokenize-sme-shares-tdx #tokenizedshares #realunitschweiz #aktionariat #blockchain #swisssmes #liquidity #ethereum #fintech #taurus #tdx
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Taurus, Aktionariat partner to enable trading of tokenized shares - Taurus and Aktionariat’s collaboration will allow Swiss SMEs to tokenize... - https://cointelegraph.com/news/taurus-aktionariat-tokenize-sme-shares-tdx #tokenizedshares #realunitschweiz #aktionariat #blockchain #swisssmes #liquidity #ethereum #fintech #taurus #tdx
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Taurus, Aktionariat partner to enable trading of tokenized shares - Taurus and Aktionariat’s collaboration will allow Swiss SMEs to tokenize... - https://cointelegraph.com/news/taurus-aktionariat-tokenize-sme-shares-tdx #tokenizedshares #realunitschweiz #aktionariat #blockchain #swisssmes #liquidity #ethereum #fintech #taurus #tdx
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I'm still saddened by all the work that goes into supporting TDX instead of building lasting trusted computing for x86. See my earlier rants: https://x86.lol/generic/2023/06/28/intel-tdx-2.html #kvmforum #kvm #linux #tdx
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#Canonical Shipping Updated #Intel #TDX Software For #Ubuntu #Linux 24.04 LTS
https://www.phoronix.com/news/Intel-TDX-2.1-Ubuntu-24.04-LTS
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I wrote another blog post about Intel TDX. Main points:
- You still trust the cloud vendor unless you inflict SGX-style pain on yourself.
- Our only hope are trustworthy virtualization stacks and not silver bullets from CPU vendors. -
CW: research review
V. Narayanan et al., "emote attestation of SEV-SNP confidential VMs using e-vTPMs"¹
Departing from "your data is safe with us" model where the cloud infrastructure is trusted, cloud tenants are shifting towards a model in which the cloud provider is not part of the trust domain. Both silicon and cloud vendors are trying to address this shift by introducing confidential computing - an umbrella term that provides mechanisms for protecting the data in-use through encryption below the hardware boundary of the CPU, e.g., Intel Software Guard Extensions (SGX), AMD secure encrypted virtualization (SEV), Intel trust domain extensions (TDX), etc.
In this work, we design and implement a virtual trusted platform module (vTPM) that virtualizes the hardware root-of-trust without requiring to trust the cloud provider. To ensure the security of a vTPM in a provider-controlled environment, we leverage unique isolation properties of the SEV-SNP hardware and a novel approach to ephemeral TPM state management. Specifically, we develop a stateless ephemeral vTPM that supports remote attestation without persistent state. This allows us to pair each confidential VM with a private instance of a vTPM that is completely isolated from the provider-controlled environment and other VMs. We built our prototype entirely on open-source components - Qemu, Linux, and Keylime. Though our work is AMD-specific, a similar approach could be used to build remote attestation protocol on other trusted execution environments (TEE).#arXiv #ResearchPapers #SEV-SNP #TPM #TDX #SGX #RemoteAttestation #Intel #AMD
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CW: research review
P.-C. Cheng et al., "Intel TDX Demystified: A Top-Down Approach"¹
Intel Trust Domain Extensions (TDX) is a new architectural extension in the 4th Generation Intel Xeon Scalable Processor that supports confidential computing. TDX allows the deployment of virtual machines in the Secure-Arbitration Mode (SEAM) with encrypted CPU state and memory, integrity protection, and remote attestation. TDX aims to enforce hardware-assisted isolation for virtual machines and minimize the attack surface exposed to host platforms, which are considered to be untrustworthy or adversarial in the confidential computing's new threat model. TDX can be leveraged by regulated industries or sensitive data holders to outsource their computations and data with end-to-end protection in public cloud infrastructure.
This paper aims to provide a comprehensive understanding of TDX to potential adopters, domain experts, and security researchers looking to leverage the technology for their own purposes. We adopt a top-down approach, starting with high-level security principles and moving to low-level technical details of TDX. Our analysis is based on publicly available documentation and source code, offering insights from security researchers outside of Intel. -
108 Patches Sent Out In Latest Revision Of #Intel #TDX KVM Support For #Linux
https://www.phoronix.com/news/Intel-TDX-KVM-v10-PatchesOriginal tweet : https://twitter.com/phoronix/status/1586651169082036224
