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Paper 2008/020
CCA2 Secure IBE: Standard Model Efficiency through Authenticated Symmetric Encryption
Eike Kiltz and Yevgeniy Vahlis
Abstract
We propose two constructions of chosen-ciphertext secure identity-based encryption (IBE) schemes. Our schemes have a security proof in the standard model, yet they offer performance competitive with all known random-oracle based schemes. The efficiency improvement is obtained by combining modifications of the IBE schemes by Waters and Gentry with authenticated symmetric encryption.
Metadata
- Available format(s)
-
PDF
- Category
- Public-key cryptography
- Publication info
- Published elsewhere. CT-RSA 2008
- Contact author(s)
- evahlis @ cs toronto edu
- History
- 2008-06-23: revised
- 2008-01-22: received
- See all versions
- Short URL
- https://ia.cr/2008/020
- License
-
CC BY
