Title :
Provably secure convertible multi-authenticated encryption scheme
Author_Institution :
Sch. of Inf. Sci. & Eng., Hangzhou Normal Univ., Hangzhou, China
fDate :
6/1/2012 12:00:00 AM
Abstract :
In 2009, Tsai proposed an efficient convertible multi-authenticated encryption (CMAE) scheme. However, the author shows that his scheme is distinguishable under adaptive chosen-message attack, and that the designated verifier can generate the signature of the same message for other verifiers. Since no formal model of CMAE has been presented in the literature, the author presents the first complete formal model of CMAE. Then, a new scheme is proposed. The proposed scheme is provably secure in the random oracle model.
Keywords :
cryptography; CMAE; adaptive chosen-message attack; convertible multiauthenticated encryption scheme; random oracle model;
Journal_Title :
Information Security, IET
DOI :
10.1049/iet-ifs.2011.0162