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Paper 2006/207
The Kurosawa-Desmedt Key Encapsulation is not Chosen-Ciphertext Secure
Javier Herranz and Dennis Hofheinz and Eike Kiltz
Abstract
At CRYPTO 2004, Kurosawa and Desmedt presented a hybrid public-key encryption scheme that is chosen-ciphertext secure in the standard model. Until now it was unknown if the key-encapsulation part of the Kurosawa-Desmedt scheme by itself is still chosen-ciphertext secure or not. In this short note we answer this question to the negative, namely we present a simple chosen-ciphertext attack on the Kurosawa-Desmedt key encapsulation mechanism.
Metadata
- Available format(s)
- Category
- Public-key cryptography
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- Chosen-ciphertext attackkey encapsulation mechanism
- Contact author(s)
- kiltz @ cwi nl
- History
- 2006-09-13: revised
- 2006-06-21: received
- See all versions
- Short URL
- https://ia.cr/2006/207
- License
-
CC BY