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Paper 2013/704
Adaptive Witness Encryption and Asymmetric Password-based Cryptography
Mihir Bellare and Viet Tung Hoang
Abstract
This paper defines adaptive soundness (AS) security for witness encryption and applies it to provide the first non-invasive schemes for asymmetric password-based encryption (A-PBE). A-PBE offers significant gains over classical, symmetric password-based encryption (S-PBE) in the face of attacks that compromise servers to recover hashed passwords. We also show by counter-example that the original soundness security (SS) requirement of GGSW does not suffice for the security of their own applications, and show that AS fills the gap.
Metadata
- Available format(s)
- Category
- Foundations
- Publication info
- Preprint. MINOR revision.
- Keywords
- Passwordswitness encryption
- Contact author(s)
- vth005 @ eng ucsd edu
- History
- 2015-02-12: last of 3 revisions
- 2013-11-03: received
- See all versions
- Short URL
- https://ia.cr/2013/704
- License
-
CC BY