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ACNS
2006
Springer
117views Cryptology» more  ACNS 2006»
14 years 1 months ago
Do Broken Hash Functions Affect the Security of Time-Stamping Schemes?
We study the influence of collision-finding attacks on the security of time-stamping schemes. We distinguish between client-side hash functions used to shorten the documents befo...
Ahto Buldas, Sven Laur
CIT
2006
Springer
13 years 11 months ago
A new collision resistant hash function based on optimum dimensionality reduction using Walsh-Hadamard transform
Hash functions play the most important role in various cryptologic applications, ranging from data integrity checking to digital signatures. Our goal is to introduce a new hash fu...
Barzan Mozafari, Mohammad Hasan Savoji
CISC
2007
Springer
152views Cryptology» more  CISC 2007»
14 years 1 months ago
Orthogonality between Key Privacy and Data Privacy, Revisited
Abstract. Key privacy is a notion regarding the privacy of the owner of a public key, which has important applications in building (receiver) anonymous channels, or privacy-enhance...
Rui Zhang 0002, Goichiro Hanaoka, Hideki Imai
IACR
2011
139views more  IACR 2011»
12 years 7 months ago
Improved Meet-in-the-Middle Cryptanalysis of KTANTAN
We revisit meet-in-the-middle attacks on block ciphers and recent developments in meet-in-the-middle preimage attacks on hash functions. Despite the presence of a secret key in the...
Lei Wei, Christian Rechberger, Jian Guo 0001, Hong...