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Paper 2006/446

New Identity-Based Authenticated Key Agreement Protocols from Pairings (without Random Oracles)

Shengbao Wang and Zhenfu Cao and Kim-Kwang Raymond Choo

Abstract

We present the first provably secure ID-based key agreement protocol, inspired by the ID-based encryption scheme of Gentry, in the standard (non-random-oracle) model. We show how this key agreement can be used in either escrowed or escrowless mode. We also give a protocol which enables users of separate private key generators to agree on a shared secret key. All our proposed protocols have comparable performance to all known protocols that are proven secure in the random oracle model.

Note: Some minor changes were made to the security proof.

Metadata
Available format(s)
PDF PS
Publication info
Published elsewhere. In submission.
Keywords
identity-based cryptographyauthenticated key agreementbilinear pairingsstandard model
Contact author(s)
shengbao-wang @ cs sjtu edu cn
History
2007-09-05: last of 9 revisions
2006-12-04: received
See all versions
Short URL
https://ia.cr/2006/446
License
Creative Commons Attribution
CC BY
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