Signcryption is a very useful cryptographic primitive that aims to achieve authentication and confidentiality in an efficient manner. We cryptanalyze the signcryption scheme of Wei and Ma (2019) which is claimed to be ...

Wireless sensor networks (WSNs) have found use in many areas rangingfrom military to healthcare among other areas of interest. Multiuser broadcastauthentication is an important security feature in WSNs that can enable users ...