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All-But-Many Lossy Trapdoor Functions and Selective Opening Chosen-Ciphertext Security from LWE
LWE lossy trapdoor functions chosen-ciphertext security
2017/9/14
Selective opening (SO) security refers to adversaries that receive a number of ciphertexts and, after having corrupted a subset of the senders (thus obtaining the plaintexts and the senders' random co...
All-But-Many Lossy Trapdoor Functions from Lattices and Applications
all-but-many lossy trapdoor functions lattice selective opening attacks
2017/6/8
Our second result is a public-key system tightly secure against ``selective opening'' attacks, where an attacker gets many challenges and can ask to see the random bits of any of them. Following the s...
All-But-Many Lossy Trapdoor Functions
public-key cryptography / lossy trapdoor functions public-key encryption selective opening attacks
2012/3/28
We put forward a generalization of lossy trapdoor functions (LTFs). Namely, all-but-many lossy trapdoor functions (ABM-LTFs) are LTFs that are parametrized with tags. Each tag can either be injective ...
Identity-Based (Lossy) Trapdoor Functions and Applications
Identity-based encryption pairings lattices lossiness
2012/3/26
We provide the first constructions of identity-based (injective) trapdoor functions. Furthermore, they are lossy. Constructions are given both with pairings (DLIN) and lattices (LWE). Our lossy identi...
All-But-Many Lossy Trapdoor Functions
public-key cryptography / lossy trapdoor functions public-key encryption selective opening attacks
2011/6/8
We put forward a generalization of lossy trapdoor functions (LTFs). Namely, all-but-many lossy trapdoor functions (ABM-LTFs) are LTFs that are parametrized with tags. Each tag can either be injective ...
Chosen-Ciphertext Security from Slightly Lossy Trapdoor Functions
lossy trapdoor functions public-key encryption chosen-ciphertext attack
2009/11/18
Lossy Trapdoor Functions (LTDFs), introduced by Peikert and Waters (STOC 2008) have
been useful for building many cryptographic primitives. In particular, by using an LTDF that loses a
(1 ...