{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2022,5,4]],"date-time":"2022-05-04T10:29:01Z","timestamp":1651660141217},"reference-count":30,"publisher":"SAGE Publications","issue":"6","license":[{"start":{"date-parts":[[2013,6,1]],"date-time":"2013-06-01T00:00:00Z","timestamp":1370044800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["International Journal of Distributed Sensor Networks"],"published-print":{"date-parts":[[2013,6,1]]},"abstract":"<jats:p> Wireless Sensor Network (WSN) has proved its presence in various real time applications and hence the security of such embedded devices is a vital issue. Certificateless cryptography is one of the recent paradigms to provide security. Certificateless public key cryptography (CL-PKC) deals effectively with the twin issues of certificate management in traditional public key cryptography and key escrow problem in identity-based cryptography. CL-PKC has attracted special attention in the field of information security as it has opened new avenues for improvement in the present security architecture. Recently, Tsai et al. proposed an improved certificateless signature scheme without pairing and claimed that their new construction is secure against different kinds of attacks. In this paper, we present a security analysis of their scheme and our results show that scheme does not have resistance against malicious-KGC attack. In addition, we have found some security flaws in the certificateless signature scheme of Fan et al. and proved the scheme vulnerable to Strong Type I attack. <\/jats:p>","DOI":"10.1155\/2013\/102508","type":"journal-article","created":{"date-parts":[[2013,6,9]],"date-time":"2013-06-09T21:00:37Z","timestamp":1370811637000},"page":"102508","update-policy":"http:\/\/dx.doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":7,"title":["On the Security of Certificateless Signature Schemes"],"prefix":"10.1177","volume":"9","author":[{"given":"Gaurav","family":"Sharma","sequence":"first","affiliation":[{"name":"Computer Science and Engineering Department, Thapar University, Patiala 147004, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Suman","family":"Bala","sequence":"additional","affiliation":[{"name":"Computer Science and Engineering Department, Thapar University, Patiala 147004, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anil K.","family":"Verma","sequence":"additional","affiliation":[{"name":"Computer Science and Engineering Department, Thapar University, Patiala 147004, India"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2013,6,9]]},"reference":[{"key":"B1-2013-102508","series-title":"Lecture Notes in Computer Science","doi-asserted-by":"crossref","first-page":"47","DOI":"10.1007\/3-540-39568-7_5","volume-title":"Advances in Cryptology","volume":"196","author":"Shamir A.","year":"1984"},{"key":"B2-2013-102508","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-540-40061-5_29"},{"key":"B3-2013-102508","doi-asserted-by":"publisher","DOI":"10.1007\/11599371_2"},{"key":"B4-2013-102508","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-540-27800-9_18"},{"key":"B5-2013-102508","doi-asserted-by":"publisher","DOI":"10.1007\/11780656_20"},{"key":"B6-2013-102508","series-title":"Lecture Notes in Computer Science","doi-asserted-by":"crossref","first-page":"474","DOI":"10.1007\/11745853_31","volume-title":"Proceedings of the 9th International Conference on Theory and Practice of Public-Key Cryptography (PKC '06)","volume":"3958","author":"Libert B."},{"key":"B7-2013-102508","doi-asserted-by":"publisher","DOI":"10.1007\/11596981_16"},{"key":"B9-2013-102508","doi-asserted-by":"publisher","DOI":"10.1007\/s10986-005-0008-5"},{"key":"B10-2013-102508","doi-asserted-by":"publisher","DOI":"10.1007\/11767480_20"},{"key":"B11-2013-102508","doi-asserted-by":"publisher","DOI":"10.1007\/11807964_33"},{"key":"B12-2013-102508","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-540-77090-9_63"},{"key":"B13-2013-102508","series-title":"Lecture Notes in Computer Science","first-page":"308","volume-title":"Proceedings of the 12th Australasian Conference on Information Security and Privacy (ACISP '07)","volume":"4586","author":"Au M. 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