Open AccessSecure Mobile Agents in eCommerce with Forward‐Secure Undetachable Digital Signatures
Author(s) -
Shi Yang,
Zhao Qinpei,
Liu Qin
Publication year - 2015
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.15.0114.0657
Subject(s) - digital signature , key (lock) , computer security , computer science , scheme (mathematics) , hacker , encryption , signature (topology) , blind signature , public key cryptography , mathematics , hash function , mathematical analysis , geometry
We introduce the idea of a forward‐secure undetachable digital signature (FS‐UDS) in this paper, which enables mobile agents to generate undetachable digital signatures with forward security of the original signer's signing key. The definition and security notion of an FS‐UDS scheme are given. Then, the construction of a concrete FS‐UDS scheme is proposed; and the proof of security for the proposed scheme is also provided. In the proposed scheme, mobile agents need not carry the signing key when they generate digital signatures on behalf of the original signer, so the signing key will not be compromised. At the same time, the encrypted function is combined with the original signer's requirement; therefore, misuse of the signing algorithm can be prevented. Furthermore, in the case where a hacker has accessed the signing key of the original signer, he/she is not able to forge a signature for any time period prior to when the key was obtained.