Title :
Refinement and improvement of virtual software token protocols
Author_Institution :
Fac. of Sch. of Comput. Eng., Sejong Univ., Seoul, South Korea
Abstract :
Recently, the Virtual Software Token Protocol (VSTP) was proposed as a practical method for secure public key infrastructure (PKI) roaming. It enabled users not to keep their private keys in portable storage. Instead, a set of servers was deployed for the purpose. However, a weakness has been found from the original assumption. The split password was vulnerable to the so-called split on-line attack. So, this letter refines the original scheme with a new restriction and proposes its improved version as well.
Keywords :
public key cryptography; token networks; computer network security; public key cryptography; public key infrastructure; split on-line attack; split password; virtual software token protocols; Access protocols; Digital control; Digital signatures; Merging; Network servers; Public key; Public key cryptography; Software algorithms; Software design; Software performance;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2003.822523
