1,390 research outputs found
Citizen Electronic Identities using TPM 2.0
Electronic Identification (eID) is becoming commonplace in several European
countries. eID is typically used to authenticate to government e-services, but
is also used for other services, such as public transit, e-banking, and
physical security access control. Typical eID tokens take the form of physical
smart cards, but successes in merging eID into phone operator SIM cards show
that eID tokens integrated into a personal device can offer better usability
compared to standalone tokens. At the same time, trusted hardware that enables
secure storage and isolated processing of sensitive data have become
commonplace both on PC platforms as well as mobile devices.
Some time ago, the Trusted Computing Group (TCG) released the version 2.0 of
the Trusted Platform Module (TPM) specification. We propose an eID architecture
based on the new, rich authorization model introduced in the TCGs TPM 2.0. The
goal of the design is to improve the overall security and usability compared to
traditional smart card-based solutions. We also provide, to the best our
knowledge, the first accessible description of the TPM 2.0 authorization model.Comment: This work is based on an earlier work: Citizen Electronic Identities
using TPM 2.0, to appear in the Proceedings of the 4th international workshop
on Trustworthy embedded devices, TrustED'14, November 3, 2014, Scottsdale,
Arizona, USA, http://dx.doi.org/10.1145/2666141.266614
Device-Based Isolation for Securing Cryptographic Keys
In this work, we describe an eective device-based isolation
approach for achieving data security. Device-based isolation
leverages the proliferation of personal computing devices to
provide strong run-time guarantees for the condentiality of
secrets. To demonstrate our isolation approach, we show its
use in protecting the secrecy of highly sensitive data that
is crucial to security operations, such as cryptographic keys
used for decrypting ciphertext or signing digital signatures.
Private key is usually encrypted when not used, however,
when being used, the plaintext key is loaded into the memory
of the host for access. In our threat model, the host may
be compromised by attackers, and thus the condentiality of
the host memory cannot be preserved. We present a novel
and practical solution and its prototype called DataGuard to
protect the secrecy of the highly sensitive data through the
storage isolation and secure tunneling enabled by a mobile
handheld device. DataGuard can be deployed for the key
protection of individuals or organizations
Trust Evaluation for Embedded Systems Security research challenges identified from an incident network scenario
This paper is about trust establishment and trust
evaluations techniques. A short background about trust, trusted
computing and security in embedded systems is given. An analysis
has been done of an incident network scenario with roaming
users and a set of basic security needs has been identified.
These needs have been used to derive security requirements for devices and systems, supporting the considered scenario. Using the requirements, a list of major security challenges for future research regarding trust establishment in dynamic networks have been collected and elaboration on some different approaches for future research has been done.This work was supported by the Knowledge foundation and RISE within the ARIES project
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