Title
On the Security of NMAC and Its Variants.
Abstract
Based on the three earlier MAC (Message Authentication Code) construction approaches, we propose and analyze some variants of NMAC. We propose some key recovery attacks to these NMAC variants, for example, we can recover the equivalent inner key of NMAC in about O(2n/2) MAC operations, in a related key setting. We propose NMAC-E, a variant of NMAC with secret envelop, to achieve more process efficiency and no loss of security, which needs only one call to the underlying hash function, instead of two invocations in HMAC.
Year
DOI
Venue
2011
10.12928/TELKOMNIKA.v11i2.829
Telkomnika
Keywords
Field
DocType
birthday attack,equivalent key recovery,keying hash function,mac forgery,nmac
Hash-based message authentication code,Message authentication code,Computer science,Computer security,Birthday attack,Hash function,Process efficiency,Key recovery
Journal
Volume
Issue
ISSN
11
2
23029293
Citations 
PageRank 
References 
0
0.34
30
Authors
4
Name
Order
Citations
PageRank
Fanbao Liu1294.40
Changxiang Shen212714.57
Tao Xie3505.91
Deng-Guo Feng41991190.95