A Biometric fuzzy extractor scheme for iris templates was recently presented in [3]. This fuzzy extractor binds a cryptographic key with the iris template of a user, allowing to recover such cryptographic key by authenticating the user by means of a new iris template from her. In this work, an analysis of the security efficiency of this fuzzy extractor is carried out by means of a study about t...

We present a negative result of fuzzy extractors with computational security. Specifically, we show that, under a certain computational condition, the existence of a computational fuzzy extractor implies the existence of an information-theoretic fuzzy extractor with slightly weaker parameters. The condition is that the generation procedure of the fuzzy extractor is efficiently invertible by an ...

Extractor Description Language (EDL) vereinfacht die im Software-Reengineering immer wiederkehrende Überführung von Quellcode in abstrakte Syntaxgraphen (ASG). EDL verwendet einen GLR-Parser, der im Unterschied zu den üblichen LL/LR(k)Algorithmen die Verwendung von beliebigen, auch mehrdeutigen, kontextfreien Grammatiken erlaubt. Darüber hinaus vereinfachen Symboltabellen-Stacks und deklarative...