作者: Michal Rjaško
DOI: 10.2478/V10127-010-0034-5
关键词: Mathematics 、 Discrete mathematics 、 Hash function 、 Universal hashing 、 Collision resistance 、 Preimage attack 、 MDC-2 、 SHA-2 、 Hash chain 、 Collision attack 、 Theoretical computer science
摘要: In this paper we analyze the chosen target forced prefix (CTFP) preimage resistance security notion for hash functions rstly introduced by Kelsey and Kohno with Nostradamus attack [4]. We give a formal denition of property in function family settings work out all implications separations between CTFP other standard notions (preimage resistance, collision etc.). This follows Rogaway Shrimpton [6], where they dened seven basic examined relationships among these notions. also dene new families { always which guarantees