scope:

The present document describes the use and application of Identity-Based Cryptography (IBC) applied to both encryption, as Identity-Based Encryption (IBE), and to digital signature, as Identity-Based Signature (IBS). The present document is intended to allow non-experts in the technology of IBC to be able to gain an understanding of the technology, its domains of application, and its required environment.

In addition the present document reviews use of IBE against more common asymmetric encryption schemes (e.g. RSA and ECC schemes), as well as more generalized Functional Encryption (FE) and Attributed Based Encryption (ABE) schemes. The present document also reviews use of IBS against more common digital signature schemes (e.g. DSA, ECDSA). An overview of algorithms and their modes of operation available to implement IBE, and IBS, and their evolution to quantum safe instances is also covered in the present document.