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題名 Security Analysis of Choi et al.`s Certificateless Short Signature Scheme
作者 左瑞麟
Tso, Raylin
貢獻者 資科系
關鍵詞 Certificateless cryptography;Certificateless signature;Short signature;Security models;Cryptanalysis
日期 2013.07
上傳時間 20-十月-2014 18:21:03 (UTC+8)
摘要 Certificateless public key cryptography, first introduced by Al-Riyami and Paterson in 2003, is aimed to simplify the certificate management in PKI-based public key cryptography and to solve the key escrow problem of identity-based cryptography. On the other hand, Boneh et al. introduced the notion of short signatures in 2001, which are useful for systems with low bandwidth and/or low computation power. Inheriting the advantages of both certificateless cryptography and short signatures, certificateless short signatures have come into limelight in recent years. However, security and performance are always a trade-off. In 2007, Huang et al. showed security models of certificateless signature to simulate possible adversaries with their attack abilities. Recently, Choi et al. proposed a certificateless short signature scheme and showed that their scheme achieves the strongest security level. However, we have found that Choi et al.’s scheme is not as secure as they claimed. In this paper, we give comments on Choi et al. scheme including the cryptanalysis of their protocol and the weakness of their security proof
關聯 Journal of Information Hiding and Multimedia Signal Processing,4(3), 146-153
資料類型 article
DOI http://dx.doi.org/10.1007/s11227-013-0917-8
dc.contributor 資科系en_US
dc.creator (作者) 左瑞麟zh_TW
dc.creator (作者) Tso, Raylinen_US
dc.date (日期) 2013.07en_US
dc.date.accessioned 20-十月-2014 18:21:03 (UTC+8)-
dc.date.available 20-十月-2014 18:21:03 (UTC+8)-
dc.date.issued (上傳時間) 20-十月-2014 18:21:03 (UTC+8)-
dc.identifier.uri (URI) http://nccur.lib.nccu.edu.tw/handle/140.119/70678-
dc.description.abstract (摘要) Certificateless public key cryptography, first introduced by Al-Riyami and Paterson in 2003, is aimed to simplify the certificate management in PKI-based public key cryptography and to solve the key escrow problem of identity-based cryptography. On the other hand, Boneh et al. introduced the notion of short signatures in 2001, which are useful for systems with low bandwidth and/or low computation power. Inheriting the advantages of both certificateless cryptography and short signatures, certificateless short signatures have come into limelight in recent years. However, security and performance are always a trade-off. In 2007, Huang et al. showed security models of certificateless signature to simulate possible adversaries with their attack abilities. Recently, Choi et al. proposed a certificateless short signature scheme and showed that their scheme achieves the strongest security level. However, we have found that Choi et al.’s scheme is not as secure as they claimed. In this paper, we give comments on Choi et al. scheme including the cryptanalysis of their protocol and the weakness of their security proofen_US
dc.format.extent 430120 bytes-
dc.format.mimetype application/pdf-
dc.language.iso en_US-
dc.relation (關聯) Journal of Information Hiding and Multimedia Signal Processing,4(3), 146-153en_US
dc.subject (關鍵詞) Certificateless cryptography;Certificateless signature;Short signature;Security models;Cryptanalysisen_US
dc.title (題名) Security Analysis of Choi et al.`s Certificateless Short Signature Schemeen_US
dc.type (資料類型) articleen
dc.identifier.doi (DOI) 10.1007/s11227-013-0917-8-
dc.doi.uri (DOI) http://dx.doi.org/10.1007/s11227-013-0917-8-