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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/40298

Title: Efficient proxy signcryption scheme with provable CCA and CMA security
Authors: Han-Yu Lin
Tzong-Sun Wu
Shih-Kun Huanga
Yi-Shiung Yeh
Contributors: 國立臺灣海洋大學:資訊工程學系
Keywords: Public key encryption
Bilinear pairing
Date: 2010
Issue Date: 2017-01-17T03:52:02Z
Publisher: Computers & Mathematics with Applications
Abstract: Abstract: For facilitating the confidential transaction with delegation such as on-line proxy auction and business contract signing by an authorized proxy, we propose an efficient proxy signcryption scheme from pairings. Our scheme allows an original signer to delegate his signing power to a proxy one such that the latter can signcrypt a plaintext on behalf of the former. The signcrypted message can only be decrypted by a designated recipient who is also responsible for verifying the recovered proxy signature. To deal with a later dispute over repudiation, the designated recipient can easily announce the ordinary proxy signature for public verification without extra computational efforts. To guarantee the realistic applicability, we demonstrate that our scheme outperforms previous works in terms of functionalities and computational efficiency. Moreover, the security requirement of confidentiality against indistinguishability under adaptive chosen-ciphertext attacks (IND-CCA2) and that of unforgeability against existential forgery under adaptive chosen-message attacks (EF-CMA) are proved in random oracle models.
Relation: 60(7)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/40298
Appears in Collections:[資訊工程學系] 期刊論文

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