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Published in:
2011 | OriginalPaper | Chapter
General Construction of Chameleon All-But-One Trapdoor Functions
Authors : Shengli Liu, Junzuo Lai, Robert H. Deng
Published in: Provable Security
Publisher: Springer Berlin Heidelberg
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Lossy trapdoor functions enable black-box construction of public key encryption (PKE) schemes secure against chosen-ciphertext attack [18]. Recently, a more efficient black-box construction of public key encryption was given in [12] with the help of chameleon all-but-one trapdoor functions (ABO-TDFs).
In this paper, we propose a black-box construction for transforming any ABO-TDFs into chameleon ABO-TDFs with the help of chameleon hash functions. Instantiating the proposed general black-box construction of chameleon ABO-TDFs, we can obtain the first chameleon ABO-TDFs based on the Decisional Diffie-Hellman (DDH) assumption.