[Resource Topic] 2002/098: Identity-Based Signcryption

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Identity-Based Signcryption

Authors: John Malone-Lee


A signcryption scheme is a scheme that provides private and authenticated delivery of messages between two parties.
It does this in a more efficient manner than a straightforward composition of an encryption scheme with a signature scheme.
An identity-based cryptosystem is one in which the public key may be any string (or may be derived from any string).

In this paper we propose an identity-based signcryption scheme.
We give a security model for such a scheme and sketch the details of how our scheme may be proved secure in this model.

ePrint: https://eprint.iacr.org/2002/098

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