Table of contents : Introduction Security for Signcryption: The Two-User Model Security for Signcryption: The Multi-User Model Signcryption Schemes Based on the Diffie–Hellman Problem Signcryption Schemes Based on Bilinear Maps Signcryption Schemes Based on the RSA Problem Hybrid Signcryption Concealment and Its Applications to Authenticated Encryption Parallel Signcryption Identit…