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CCS
2005
ACM
14 years 1 months ago
Direct chosen ciphertext security from identity-based techniques
We describe a new encryption technique that is secure in the standard model against adaptive chosen ciphertext (CCA2) attacks. We base our method on two very efficient Identity-Ba...
Xavier Boyen, Qixiang Mei, Brent Waters
CHI
2011
ACM
12 years 11 months ago
Security through a different kind of obscurity: evaluating distortion in graphical authentication schemes
While a large body of research on image-based authentication has focused on memorability, comparatively less attention has been paid to the new security challenges these schemes m...
Eiji Hayashi, Jason Hong, Nicolas Christin
TCC
2005
Springer
169views Cryptology» more  TCC 2005»
14 years 1 months ago
Chosen-Ciphertext Security of Multiple Encryption
Encryption of data using multiple, independent encryption schemes (“multiple encryption”) has been suggested in a variety of contexts, and can be used, for example, to protect ...
Yevgeniy Dodis, Jonathan Katz
PROVSEC
2010
Springer
13 years 5 months ago
Identity Based Public Verifiable Signcryption Scheme
Abstract. Signcryption as a single cryptographic primitive offers both confidentiality and authentication simultaneously. Generally in signcryption schemes, the message is hidden a...
S. Sharmila Deva Selvi, S. Sree Vivek, C. Pandu Ra...
TCC
2009
Springer
167views Cryptology» more  TCC 2009»
14 years 8 months ago
Simultaneous Hardcore Bits and Cryptography against Memory Attacks
This paper considers two questions in cryptography. Cryptography Secure Against Memory Attacks. A particularly devastating side-channel attack against cryptosystems, termed the &qu...
Adi Akavia, Shafi Goldwasser, Vinod Vaikuntanathan