Chosen ciphertext secure fuzzy identity based encryption without ROM

Two new constructions of chosen-ciphertext secure fuzzy identity-based encryption (fuzzy-IBE) schemes without random oracle are proposed. The first scheme combines the modification of chosen-plaintext secure Sahai and Waters’ “large universe” construction and authenticated symmetric encryption, and...

Full description

Saved in:
Bibliographic Details
Published inShanghai jiao tong da xue xue bao Vol. 13; no. 6; pp. 646 - 650
Main Authors Fang, Li-ming, Wang, Jian-dong, Ren, Yong-jun, Xia, Jin-yue, Bian, Shi-zhu
Format Journal Article
LanguageEnglish
Published Heidelberg Shanghai Jiaotong University Press 01.12.2008
Subjects
Architecture
Computer Science
Electrical Engineering
Engineering
Life Sciences
Materials Science
standard model
fuzzy identity based encryption (fuzzy-IBE)
chosen-ciphertext security
TP 301
Online AccessGet full text

Cover

More Information
Summary:Two new constructions of chosen-ciphertext secure fuzzy identity-based encryption (fuzzy-IBE) schemes without random oracle are proposed. The first scheme combines the modification of chosen-plaintext secure Sahai and Waters’ “large universe” construction and authenticated symmetric encryption, and uses consistency checking to handle with ill-formed ciphertexts to achieve chosen-ciphertext security in the selective ID model. The second scheme improves the efficiency of first scheme by eliminating consistency checking. This improved scheme is more efficient than existing chosen-ciphertext secure fuzzy-IBE scheme in the standard model.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1007-1172
1995-8188
DOI:10.1007/s12204-008-0646-y