Difference between revisions of "Unclonable Identifier"
(Created page with "==Full Title or Meme== An Unclonable Identity is based on some physical measurement that cannot be reproduced else where. ==Context== * The most common private Identifi...")
Revision as of 11:20, 7 August 2018
Full Title or Meme
An Unclonable Identity is based on some physical measurement that cannot be reproduced else where.
- The most common private Identifier on the web today is a Private Key that is created and kept secret by the owner of the key.
- Most naturally occurring materials will have some random characterizes which are randomly disbursed throughout the material.
- To function as an Identifier, the material object needs to have some element of randomness that can be read out of the object producing some repeatable string.
- It is still necessary to ensure that it is the material object that is being read, and not just a replay of a prior read out.
Lots of attempts have been made to create a physical unclonable function (PUF), some of which are listed here.
- Optical - puts scattered defects in an optical media that have been called a "Speckle Pattern".
- Coating - puts a pattern on the top of, for example, a silicon chip that can be read by the chip, but is covered by a material which is opaque and part of the pattern's read out capability.
- Delay - based on delays in materials, like silicon, that are able to be reliably read out.
- SRAM - naturally comes with defects that can be read out. Many patents and products are now available using this to create an RFID chip.<rev></ref>
- Quantum - which are completely unclonable, but hard to maintain over any period of time longer than a second. Application have been found in establishing secure communications channels.