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» Security Analysis of Several Group Signature Schemes
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EUROCRYPT
2010
Springer
15 years 4 months ago
Cryptographic Agility and Its Relation to Circular Encryption
We initiate a provable-security treatment of cryptographic agility. A primitive (for example PRFs, authenticated encryption schemes or digital signatures) is agile when multiple, ...
Tolga Acar, Mira Belenkiy, Mihir Bellare, David Ca...
IACR
2011
173views more  IACR 2011»
13 years 11 months ago
All-But-Many Lossy Trapdoor Functions
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...
Dennis Hofheinz
INFORMATICALT
2010
102views more  INFORMATICALT 2010»
14 years 9 months ago
An Computation-Efficient Generalized Group-Oriented Cryptosystem
A Group-Oriented Cryptosystem (GOC) allows a sender to encrypt a message sent to a group of users so only the specified sets of users in that group can cooperatively decrypt the me...
Ting-Yi Chang
MMSEC
2006
ACM
115views Multimedia» more  MMSEC 2006»
15 years 5 months ago
An improvement to a biometric.based multimedia content protection scheme
A biometric-based method for multimedia content protection was recently proposed. The method relies on biometric data of the user and a layered encryption mechanism to achieve con...
Daniel Socek, Michal Sramka, Oge Marques, Dubravko...
JOC
2007
133views more  JOC 2007»
14 years 11 months ago
Trapdoor Hard-to-Invert Group Isomorphisms and Their Application to Password-Based Authentication
In the security chain the weakest link is definitely the human one: human beings cannot remember long secrets and often resort to rather insecure solutions to keep track of their ...
Dario Catalano, David Pointcheval, Thomas Pornin