1,978 research outputs found
Count three for wear able computers
This paper is a postprint of a paper submitted to and accepted for publication in the Proceedings of the IEE Eurowearable 2003 Conference, and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at the IET Digital Library.
A revised version of this paper was also published in Electronics Systems and Software, also subject to Institution of Engineering and Technology Copyright. The copy of record is also available at the IET Digital Library.A description of 'ubiquitous computer' is presented. Ubiquitous computers imply portable computers embedded into everyday objects, which would replace personal computers. Ubiquitous computers can be mapped into a three-tier scheme, differentiated by processor performance and flexibility of function. The power consumption of mobile devices is one of the most important design considerations. The size of a wearable system is often a design limitation
SecuCode: Intrinsic PUF Entangled Secure Wireless Code Dissemination for Computational RFID Devices
The simplicity of deployment and perpetual operation of energy harvesting
devices provides a compelling proposition for a new class of edge devices for
the Internet of Things. In particular, Computational Radio Frequency
Identification (CRFID) devices are an emerging class of battery-free,
computational, sensing enhanced devices that harvest all of their energy for
operation. Despite wireless connectivity and powering, secure wireless firmware
updates remains an open challenge for CRFID devices due to: intermittent
powering, limited computational capabilities, and the absence of a supervisory
operating system. We present, for the first time, a secure wireless code
dissemination (SecuCode) mechanism for CRFIDs by entangling a device intrinsic
hardware security primitive Static Random Access Memory Physical Unclonable
Function (SRAM PUF) to a firmware update protocol. The design of SecuCode: i)
overcomes the resource-constrained and intermittently powered nature of the
CRFID devices; ii) is fully compatible with existing communication protocols
employed by CRFID devices in particular, ISO-18000-6C protocol; and ii) is
built upon a standard and industry compliant firmware compilation and update
method realized by extending a recent framework for firmware updates provided
by Texas Instruments. We build an end-to-end SecuCode implementation and
conduct extensive experiments to demonstrate standards compliance, evaluate
performance and security.Comment: Accepted to the IEEE Transactions on Dependable and Secure Computin
Tree Parity Machine Rekeying Architectures
The necessity to secure the communication between hardware components in
embedded systems becomes increasingly important with regard to the secrecy of
data and particularly its commercial use. We suggest a low-cost (i.e. small
logic-area) solution for flexible security levels and short key lifetimes. The
basis is an approach for symmetric key exchange using the synchronisation of
Tree Parity Machines. Fast successive key generation enables a key exchange
within a few milliseconds, given realistic communication channels with a
limited bandwidth. For demonstration we evaluate characteristics of a
standard-cell ASIC design realisation as IP-core in 0.18-micrometer
CMOS-technology
Efficient time synchronized one-time password scheme to provide secure wake-up authentication on wireless sensor networks
In this paper we propose Time Synchronized One-Time-Password scheme to
provide secure wake up authentication. The main constraint of wireless sensor
networks is their limited power resource that prevents us from using radio
transmission over the network to transfer the passwords. On the other hand
computation power consumption is insignificant when compared to the costs
associated with the power needed for transmitting the right set of keys. In
addition to prevent adversaries from reading and following the timeline of the
network, we propose to encrypt the tokens using symmetric encryption to prevent
replay attacks.Comment: International Journal Of Advanced Smart Sensor Network Systems
(IJASSN), Vol 3, No.1, January 2013
http://airccse.org/journal/ijassn/papers/3113ijassn01.pd
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