Resources Contact Us Home
Techniques for implementing security on a small footprint device using a context barrier

Image Number 4 for United States Patent #6823520.

A small footprint device, such as a smart card, can securely run multiple programs from unrelated vendors by the inclusion of a context barrier isolating the execution of the programs. The context barrier performs security checks to see that principal and object are within the same namespace or memory space or to see that a requested action is authorized for an object to be operated upon.

  Recently Added Patents
Methods of forming semiconductor devices having diffusion regions of reduced width
Method of measuring the flux of a soil gas
Cosmetic/dermatological compositions comprising naphthoic acid compounds and polyurethane polymers
Spoofing detection for civilian GNSS signals
Apparatus and method for multiple pagings in broadband wireless communication system
Cable exit trough with insert
Adsorptive molded parts and the use thereof
  Randomly Featured Patents
Arbitrary raster blanking circuit
Semiconductor device for face down bonding to a mounting substrate and a method of manufacturing the same
Methods and apparatus for reducing gas turbine engine emissions
Flexible fabric fastener
Method for optical resolution of Corey lactone diols
Process for forming a semiconductor device with controlled relative thicknesses of the active region and gate electrode
System and method for structured illumination and collection for improved optical confocality of raman fiber array spectral translator imaging and interactive raman probing
Nonionic surfactants
Substrate processing apparatus and method
Winding tool for forming wire coils in a stator stack including radially movable forming members