Carlos Javier Hernández-Castro, M. Rodríguez-Moreno, David F. Barrero
{"title":"对Capy HIP的侧信道攻击","authors":"Carlos Javier Hernández-Castro, M. Rodríguez-Moreno, David F. Barrero","doi":"10.1109/EST.2014.30","DOIUrl":null,"url":null,"abstract":"One of the first approaches to proposed to prevent automated attacks on Internet were the Human Interactive Proofs(HIPs). Since their invention, a variety of designs have been proposed, yet most of them have been successfully attacked. In this paper we focus on a new HIP, based on a puzzle solving scheme, created to increase both security and usability: the Capy CAPTCHA. We have analyzed its design, finding some important flaws. Based on them, we propose a low-cost, side-channel attack. Initial results show that the attack is able to break Capy with a 61% success ratio.","PeriodicalId":193536,"journal":{"name":"2014 Fifth International Conference on Emerging Security Technologies","volume":"406 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2014-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"6","resultStr":"{\"title\":\"Side-Channel Attack against the Capy HIP\",\"authors\":\"Carlos Javier Hernández-Castro, M. Rodríguez-Moreno, David F. Barrero\",\"doi\":\"10.1109/EST.2014.30\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"One of the first approaches to proposed to prevent automated attacks on Internet were the Human Interactive Proofs(HIPs). Since their invention, a variety of designs have been proposed, yet most of them have been successfully attacked. In this paper we focus on a new HIP, based on a puzzle solving scheme, created to increase both security and usability: the Capy CAPTCHA. We have analyzed its design, finding some important flaws. Based on them, we propose a low-cost, side-channel attack. Initial results show that the attack is able to break Capy with a 61% success ratio.\",\"PeriodicalId\":193536,\"journal\":{\"name\":\"2014 Fifth International Conference on Emerging Security Technologies\",\"volume\":\"406 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2014-09-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"6\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2014 Fifth International Conference on Emerging Security Technologies\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/EST.2014.30\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2014 Fifth International Conference on Emerging Security Technologies","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/EST.2014.30","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
One of the first approaches to proposed to prevent automated attacks on Internet were the Human Interactive Proofs(HIPs). Since their invention, a variety of designs have been proposed, yet most of them have been successfully attacked. In this paper we focus on a new HIP, based on a puzzle solving scheme, created to increase both security and usability: the Capy CAPTCHA. We have analyzed its design, finding some important flaws. Based on them, we propose a low-cost, side-channel attack. Initial results show that the attack is able to break Capy with a 61% success ratio.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
