Mechanism of Signcryption – A Review

Signcryption is a relatively new way to achieve confidentiality and authentication simultaneously. Before the advent of signcryption the approach was to first encrypt and then to sign the message, but this scheme had more computational cost and communication overhead. Many signcryption schemes have been developed and implemented so far, but differ in security attributes they provide and computational cost they incur. This paper explains the mechanism of signcryption and analyzes the different cryptographic approaches which can be used along with signcryption. It also provides a glimpse of different signcryption schemes proposed.