Authors: Mihaljević, Miodrag J. 
Fossorier, Marc P. C.
Imai, Hideki
Affiliations: Mathematical Institute of the Serbian Academy of Sciences and Arts 
Title: Security evaluation of certain broadcast encryption schemes employing a generalized time-memory-data trade-off
Journal: IEEE Communications Letters
Volume: 11
Issue: 12
First page: 988
Last page: 990
Issue Date: 1-Dec-2007
Rank: M22
ISSN: 1089-7798
DOI: 10.1109/LCOMM.2007.071029
In this letter a weakness of certain broadcast encryption schemes in which the protected delivery of a session key (SEK) is based on XOR-ing this SEK with the IDs of the keys employed for its encryption is addressed. The weakness can be effectively explored assuming passive attacking which in the cases corresponding to a malicious legitimate user being the attacker, is a ciphertext only attack. A dedicated algorithm for cryptanalysis is proposed based on a generalized time-memory-data trade-off approach and its main characteristics are derived. The developed algorithm points out a security weakness of employing a block cipher with block length shorter than the key length in the considered BE schemes.
Keywords: Broadcasting | Conditional data access control | Cryptanalysis | Cryptographic key management | Time-memorydata trade-off
Publisher: IEEE
Project: Advanced methods for cryptology and information processing 

Show full item record


checked on Jun 13, 2024

Page view(s)

checked on May 9, 2024

Google ScholarTM




Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.