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Paper 2005/341
A Universally Composable Scheme for Electronic Cash
Marten Trolin
Abstract
We propose a scheme for electronic cash based on symmetric primitives. The scheme is secure in the framework for universal composability assuming the existence of a symmetric CCA2-secure encryption scheme, a CMA-secure signature scheme, and a family of one-way, collision-free hash functions. In particular, the security proof is not in the random-oracle model. Due to its high efficiency, the scheme is well-suited for devices such as smart-cards and mobile phones. We also show how the proposed scheme can be used as a group signature scheme with one-time keys.
Metadata
- Available format(s)
- PDF PS
- Category
- Cryptographic protocols
- Publication info
- Published elsewhere. Extended abstract at Indocrypt 2005. This is the full version.
- Keywords
- electronic cash
- Contact author(s)
- marten @ nada kth se
- History
- 2005-10-11: last of 3 revisions
- 2005-09-27: received
- See all versions
- Short URL
- https://ia.cr/2005/341
- License
-
CC BY