Incremental cryptography and memory checkers

  • We introduce the relationship between incremental cryptography and memory checkers. We present an incremental message authentication scheme based on the XOR MACs which supports insertion, deletion and other single block operations. Our scheme takes only a constant number of pseudorandom function evaluations for each update step and produces smaller authentication codes than the tree scheme presented in [BGG95]. Furthermore, it is secure against message substitution attacks, where the adversary is allowed to tamper messages before update steps, making it applicable to virus protection. From this scheme we derive memory checkers for data structures based on lists. Conversely, we use a lower bound for memory checkers to show that so-called message substitution detecting schemes produce signatures or authentication codes with size proportional to the message length.

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Author:Marc Fischlin
Document Type:Preprint
Date of Publication (online):2005/07/21
Year of first Publication:1997
Publishing Institution:Universit├Ątsbibliothek Johann Christian Senckenberg
Release Date:2005/07/21
Page Number:16
Preprint, sp├Ąter in: Advances in Cryptology - Eurocrypt '97 , Lecture Notes in Computer Science, Vol. 1233, Springer-Verlag, 1997, S. 393-408
Source:Advances in Cryptology - Eurocrypt '97 , Lecture Notes in Computer Science, Vol. 1233, Springer-Verlag, pp. 393-408, 1997 -
Institutes:Informatik und Mathematik / Mathematik
Informatik und Mathematik / Informatik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 51 Mathematik / 510 Mathematik
Licence (German):License LogoDeutsches Urheberrecht