Welcome to the resource topic for 2003/231
Title:
Public-Key Steganography with Active Attacks
Authors: Michael Backes, Christian Cachin
Abstract:A complexity-theoretic model for public-key steganography with
active attacks is introduced. The notion of steganographic
security against adaptive chosen-covertext attacks (SS-CCA) and a
relaxation called steganographic security against
publicly-detectable replayable adaptive chosen-covertext attacks
(SS-PDR-CCA) are formalized. These notions are closely related
to CCA-security and PDR-CCA-security for public-key
cryptosystems. In particular, it is shown that any SS-(PDR-)CCA
stegosystem is a (PDR-)CCA-secure public-key cryptosystem and that
an SS-PDR-CCA stegosystem can be realized from any PDR-CCA-secure
public-key cryptosystem with pseudorandom ciphertexts.
ePrint: https://eprint.iacr.org/2003/231
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