Security and Communication Networks

Research Article

MHCOOS: An Offline-Online Certificateless Signature Scheme for M-Health Devices

Table 1

Key symbols used in the paper.
SymbolsMeaning
Additive notation in group 1
Multiplication notation in group 2
Three one-way hash functions
Secret value selected by KGC
Master secret keys and master public keys
Identity of the user
Secret value of the user in the MHCOOS scheme
Private key
Secret value of the OOCS scheme
Public key
Prime order
Partial private key
System public parameter list published by the KGC
Offline signature value
Online signature value
MSMedical server unit
MDUser’s mobile device
HTPHealthcare Terminal Point