Efficient multi-receiver heterogenous signcryption

In this paper, an efficient multi-receiver heterogenous signcryption based on elliptic curve cryptography is proposed. Most of the existing heterogenous signcryption schemes are based on pairing based cryptography. However it requires a lot of computational cost and time. The proposed system overcomes this by employing elliptic curve cryptography as the elliptic curve computations requires very less computational time and communication overhead compared to pairing operations. The proposed system consists of two single-receiver heterogenous signcryption schemes and its extension to multiple receivers. Also it is shown that the proposed system achieves confidentiality, integrity, authentication, non-repudiation, unforgeability, and forward secrecy.