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CTRSA
2011
Springer
243views Cryptology» more  CTRSA 2011»
12 years 7 months ago
Better Key Sizes (and Attacks) for LWE-Based Encryption
We analyze the concrete security and key sizes of theoretically sound lattice-based encryption schemes based on the “learning with errors” (LWE) problem. Our main contribution...
Richard Lindner, Chris Peikert
CTRSA
2011
Springer
189views Cryptology» more  CTRSA 2011»
12 years 7 months ago
Online Ciphers from Tweakable Blockciphers
Abstract. Online ciphers are deterministic length-preserving permutations EK : ({0, 1}n )+ → ({0, 1}n )+ where the i-th block of ciphertext depends only on the first i blocks of...
Phillip Rogaway, Haibin Zhang
CTRSA
2011
Springer
189views Cryptology» more  CTRSA 2011»
12 years 7 months ago
Ideal Key Derivation and Encryption in Simulation-Based Security
Abstract. Many real-world protocols, such as SSL/TLS, SSH, IPsec, IEEE 802.11i, DNSSEC, and Kerberos, derive new keys from other keys. To be able to analyze such protocols in a com...
Ralf Küsters, Max Tuengerthal
CTRSA
2011
Springer
223views Cryptology» more  CTRSA 2011»
12 years 7 months ago
Expedient Non-malleability Notions for Hash Functions
Non-malleability of a cryptographic primitive is a fundamental security property which ensures some sort of independence of cryptographic values. The notion has been extensively st...
Paul Baecher, Marc Fischlin, Dominique Schröd...
IACR
2011
104views more  IACR 2011»
12 years 3 months ago
Short Transitive Signatures for Directed Trees
A transitive signature scheme allows to sign a graph in such a way that, given the signatures of edges (a, b) and (b, c), it is possible to compute the signature for the edge (or ...
Philippe Camacho, Alejandro Hevia