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Here is the text in English to be translated to German:
C) 1999 Cooperación Internacional en Tecnologías Avanzadas (C.I.T.A.)
SL, at Internet http://www.cita.es
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A New Theory for Branding
Cryptography for Objects and Owners
by Miguel Angel Gallardo Ortiz, E-mail: mig...@cita.es
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In the last ten years Internet and public key cryptography developed
new ways to offer goods in what is known now as "electronic commerce".
One of the problems still to be solved efficiently is how to link the
information with the objects. The proposed solution can be useful for
enhanced security, increasing the probability to recover lost or
stolen things, as well as improving the commercial image and control
of trademarks.
Artificial vision and technical photography can be used for computer
implementation of standard formats for any object accurate
description. Once a method, a format and a tool are selected, the
digital image of the object must be always the same. When necessary,
analysis of physical behaviour of the materials can be used in order
to find a single set of data related with the object. The data must be
detailed enough to single it out.
Any digital representation of an object is always just a computer
file. This file can be operated by one-way hash functions producing
small messages. There are several tools for branding any object in
order to print the hash value in the surface, or even inside.
Moreover, the trademark seller, the owner, or a trusted third party
can add any other information related with the object to the message,
and they can use public key cryptography for signing with a digital
certificate. With or without it, a short message, for instance, 128
bits, can be enough digital information for any branding aim.
As a practical example, we are working with expensive gemstones.
Digital pictures of precious stones can be performed in with very
accurate optical tools, but crystal analysis, weight, faceted
geometry, colour, clarity and electro-magnetic or thermal properties
can also be used as an input of a computer program based in an
algorithm. The output must be always the same for any single gemstone.
Different gemstones must have different outputs in codification
dependence based on the principles of confusion and diffusion that
were suggested by Shannon. A gemstone can be considered the key, or
the plain text, in a standard cryptosystem for object identification
and authentication. The output can be printed in the gemstone using
laser or nanotechnology tools.
Please send your kind draft to mig...@cita.es
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