@conference {DBLP:conf/indocrypt/BarbosaF06, title = {Secure Cryptographic Workflow in the Standard Model}, booktitle = { 7th International Conference on Cryptology in India - Progress in Cryptology - INDOCRYPT}, series = {Lecture Notes in Computer Science}, volume = {4329}, year = {2006}, month = {December}, pages = {379-393}, publisher = {Springer}, organization = {Springer}, address = {Kolkata, India}, 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.

}, isbn = {3-540-49767-6}, attachments = {https://haslab.uminho.pt/sites/default/files/mbb/files/450.pdf}, author = {Manuel Bernardo Barbosa and Pooya Farshim} }