Paper 2006/450 Original: eprint.iacr.org/2006/450 ↗
Secure Cryptographic Workflow in the Standard Model
Abstract
Following the work of Al-Riyami et al. we define the notion of key encapsulation mechanism supporting cryptographic workflow (WF-KEM) and prove a KEM-DEM composition theorem which extends the notion of hybrid encryption to cryptographic workflow. We then generically construct a WF-KEM from an identity-based encryption (IBE) scheme and a secret sharing scheme. Chosen ciphertext security is achieved using one-time signatures. Adding a public-key encryption scheme we are able to modify the construction to obtain escrow-freeness. We prove all our constructions secure in the standard model.
Metadata
- Available format(s)
PDF- Category
- Public-key cryptography
- Publication info
- Preprint.
- History
- 2006-12-04: last updated
- 2006-12-04: published
- Short URL
- https://ia.cr/2006/450
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2006/450,
author = {M. Barbosa and P. Farshim},
title = {Secure Cryptographic Workflow in the Standard Model},
howpublished = {Cryptology {ePrint} Archive, Paper 2006/450},
year = {2006},
url = {https://eprint.iacr.org/2006/450}
}