A method for generating a decomposition base of implementing the methods and extraction method for extracting a random signature from the material element

摘要

The present invention method for ensuring the unity of the extracted signature from the material element, to realize a device and a computer program. The present invention includes the steps a method for extracting a random signature from a subject material element, for generating at least one acquisition vector of structural characteristics of at least one region of the subject material element, the acquisition vectors the method comprising generating at least one random signature vector, the random signature vector comprises at least and has stable properties, such as its value for each to implement the method on one same region of the subject material element could be found It comprises at least one random component having one of the random components and / or instability, such as it is possible that the values ​​for each to implement the method on one same region varies randomly in the object material element It includes a stage, and the use of a random signature vector as a random signature.