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The proposed scheme can resist both forgery server and denial of service attacks.<\/jats:p>","DOI":"10.3390\/sym9080134","type":"journal-article","created":{"date-parts":[[2017,7,28]],"date-time":"2017-07-28T10:14:34Z","timestamp":1501236874000},"page":"134","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Password Authenticated Key Exchange and Protected Password Change Protocols"],"prefix":"10.3390","volume":"9","author":[{"given":"Ting-Yi","family":"Chang","sequence":"first","affiliation":[{"name":"Graduate Institute of E-Learning, National Changhua University of Education, Changhua 500, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Min-Shiang","family":"Hwang","sequence":"additional","affiliation":[{"name":"Department of Computer Science and Information Engineering, Asia University, Taichung 413, Taiwan"},{"name":"Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 404, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chou-Chen","family":"Yang","sequence":"additional","affiliation":[{"name":"Department of Management Information Systems, National Chung Hsing University, Taichung 402, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2017,7,28]]},"reference":[{"key":"ref_1","first-page":"71","article-title":"Forensic SIM card cloning using authentication algorithm","volume":"4","author":"Anwar","year":"2016","journal-title":"Int. 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