Secure Cryptographic Workflow in the Standard Model

Manuel Barbosa; Pooya Farshim

Secure Cryptographic Workflow in the Standard Model

Manuel Barbosa, Pooya Farshim

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

14 Citations (Scopus)

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.

Translated title of the contribution	Secure Cryptographic Workflow in the Standard Model
Original language	English
Title of host publication	Progress in Cryptology - INDOCRYPT 2006
Publisher	Springer Berlin Heidelberg
Pages	379-393
Volume	4329
Publication status	Published - 2006

Bibliographical note

ISBN: 9783540497677
Publisher: Springer Verlag
Name and Venue of Conference: Progress in Cryptology - INDOCRYPT 2006
Other identifier: 2000624

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@inproceedings{a3f35a7c32bb436394624d1dad1561b1,

title = "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. ",

author = "Manuel Barbosa and Pooya Farshim",

note = "ISBN: 9783540497677 Publisher: Springer Verlag Name and Venue of Conference: Progress in Cryptology - INDOCRYPT 2006 Other identifier: 2000624",

year = "2006",

language = "English",

volume = "4329",

pages = "379--393",

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T1 - Secure Cryptographic Workflow in the Standard Model

AU - Barbosa, Manuel

AU - Farshim, Pooya

N1 - ISBN: 9783540497677 Publisher: Springer Verlag Name and Venue of Conference: Progress in Cryptology - INDOCRYPT 2006 Other identifier: 2000624

PY - 2006

Y1 - 2006

N2 - 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.

AB - 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.

M3 - Conference Contribution (Conference Proceeding)

VL - 4329

SP - 379

EP - 393

BT - Progress in Cryptology - INDOCRYPT 2006

PB - Springer Berlin Heidelberg

ER -

Secure Cryptographic Workflow in the Standard Model

Abstract

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