Information Hiding and Multimedia Security Workshop最新文献

Distributional differential privacy for large-scale smart metering 大规模智能计量的分布式差分隐私

Information Hiding and Multimedia Security Workshop Pub Date : 2014-06-11 DOI: 10.1145/2600918.2600919

Márk Jelasity, K. Birman

{"title":"Distributional differential privacy for large-scale smart metering","authors":"Márk Jelasity, K. Birman","doi":"10.1145/2600918.2600919","DOIUrl":"https://doi.org/10.1145/2600918.2600919","url":null,"abstract":"In smart power grids it is possible to match supply and demand by applying control mechanisms that are based on fine-grained load prediction. A crucial component of every control mechanism is monitoring, that is, executing queries over the network of smart meters. However, smart meters can learn so much about our lives that if we are to use such methods, it becomes imperative to protect privacy. Recent proposals recommend restricting the provider to differentially private queries, however the practicality of such approaches has not been settled. Here, we tackle an important problem with such approaches: even if queries at different points in time over statistically independent data are implemented in a differentially private way, the parameters of the distribution of the query might still reveal sensitive personal information. Protecting these parameters is hard if we allow for continuous monitoring, a natural requirement in the smart grid. We propose novel differentially private mechanisms that solve this problem for sum queries. We evaluate our methods and assumptions using a theoretical analysis as well as publicly available measurement data and show that the extra noise needed to protect distribution parameters is small.","PeriodicalId":243756,"journal":{"name":"Information Hiding and Multimedia Security Workshop","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127291515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 26

A universal image forensic strategy based on steganalytic model 基于隐写分析模型的通用图像取证策略

Information Hiding and Multimedia Security Workshop Pub Date : 2014-06-11 DOI: 10.1145/2600918.2600941

Xiaoqing Qiu, Haodong Li, Weiqi Luo, Jiwu Huang

{"title":"A universal image forensic strategy based on steganalytic model","authors":"Xiaoqing Qiu, Haodong Li, Weiqi Luo, Jiwu Huang","doi":"10.1145/2600918.2600941","DOIUrl":"https://doi.org/10.1145/2600918.2600941","url":null,"abstract":"Image forensics have made great progress during the past decade. However, almost all existing forensic methods can be regarded as the specific way, since they mainly focus on detecting one type of image processing operations. When the type of operations changes, the performances of the forensic methods usually degrade significantly. In this paper, we propose a universal forensics strategy based on steganalytic model. By analyzing the similarity between steganography and image processing operation, we find that almost all image operations have to modify many image pixels without considering some inherent properties within the original image, which is similar to what in steganography. Therefore, it is reasonable to model various image processing operations as steganography and it is promising to detect them with the help of some effective universal steganalytic features. In our experiments, we evaluate several advanced steganalytic features on six kinds of typical image processing operations. The experimental results show that all evaluated steganalyzers perform well while some steganalytic methods such as the spatial rich model (SRM) [4] and LBP [19] based methods even outperform the specific forensic methods significantly. What is more, they can further identify the type of various image processing operations, which is impossible to achieve using the existing forensic methods.","PeriodicalId":243756,"journal":{"name":"Information Hiding and Multimedia Security Workshop","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121658385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 87

Robust palmprint verification using sparse representation of binarized statistical features: a comprehensive study 利用二值化统计特征的稀疏表示鲁棒掌纹验证:一项综合研究

Information Hiding and Multimedia Security Workshop Pub Date : 2014-06-11 DOI: 10.1145/2600918.2600929

Ramachandra Raghavendra, C. Busch

引用次数: 16

Digital crime scene analysis: automatic matching of firing pin impressions on cartridge bottoms using 2d and 3d spatial features 数字犯罪现场分析:使用二维和三维空间特征自动匹配枪针在枪弹底部的印痕

Information Hiding and Multimedia Security Workshop Pub Date : 2014-06-11 DOI: 10.1145/2600918.2600930

R. Fischer, C. Vielhauer

{"title":"Digital crime scene analysis: automatic matching of firing pin impressions on cartridge bottoms using 2d and 3d spatial features","authors":"R. Fischer, C. Vielhauer","doi":"10.1145/2600918.2600930","DOIUrl":"https://doi.org/10.1145/2600918.2600930","url":null,"abstract":"The examination of forensic toolmarks impressed on shot cartridges and bullets is a well known and broadly accepted forensic discipline. The underlying concept is based on two main hypotheses: every firearm owns unique toolmark characteristics which lead to consistent and reproducible impressions on cartridges and bullets. Furthermore, it is possible to differentiate between markings of two different firearms. The application of optical 2D and 3D sensing technologies for acquisition, as well as pattern recognition techniques for automated toolmark examination are currently emerging fields of research in the domain of digital crime scene analysis. In this paper we propose and evaluate a pattern recognition approach for automated firearm identification based on central-fire firing pin impressions. The entire pattern recognition chain is addressed, starting with a confocal microscope for optical data acquisition. The preprocessing covers image enhancement, as well as necessary registration and segmentation tasks for cartridge bottoms. Feature extraction involves 18 firing pin related features from 2D and 3D spatial domain. The classification accuracy is evaluated by using 10-fold stratified cross-validation. Our evaluation approach is two-fold, during the first part we examine how well it is possible to differentiate between two firearms of the same mark and model. During the second part the evaluation is extended to analyze the accuracy of discrimination using six different weapons, whereby each two guns are of the same model. The test set contains 72 cartridge samples including three different ammunition manufactures and six individual 9mm guns. Every possible combination of weapon model, instance and ammunition type is represented by four samples within the test set. Regarding the first evaluation goal a classification accuracy between 87.5% and 100% is achieved. For the second evaluation goal the achieved classification accuracy equates to 86.11%.","PeriodicalId":243756,"journal":{"name":"Information Hiding and Multimedia Security Workshop","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131061973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

FastPass: automated border control as challenging combination of various security technologies FastPass:自动边境控制，具有挑战性的各种安全技术的组合

Information Hiding and Multimedia Security Workshop Pub Date : 2014-06-11 DOI: 10.1145/2600918.2600944

M. Clabian

引用次数: 1

GSHADE: faster privacy-preserving distance computation and biometric identification GSHADE:更快的隐私保护距离计算和生物特征识别

Information Hiding and Multimedia Security Workshop Pub Date : 2014-06-11 DOI: 10.1145/2600918.2600922

J. Bringer, H. Chabanne, M. Favre, Alain Patey, T. Schneider, Michael Zohner

引用次数: 83

Influence of data granularity on nonintrusive appliance load monitoring 数据粒度对非侵入式设备负载监控的影响

Information Hiding and Multimedia Security Workshop Pub Date : 2014-06-11 DOI: 10.1145/2600918.2600920

Günther Eibl, D. Engel

引用次数: 17

Notes on non-interactive secure comparison in "image feature extraction in the encrypted domain with privacy-preserving SIFT" “保护隐私的SIFT加密域图像特征提取”中非交互式安全比较的注意事项

Information Hiding and Multimedia Security Workshop Pub Date : 2014-06-11 DOI: 10.1145/2600918.2600927

M. Schneider, T. Schneider

{"title":"Notes on non-interactive secure comparison in \"image feature extraction in the encrypted domain with privacy-preserving SIFT\"","authors":"M. Schneider, T. Schneider","doi":"10.1145/2600918.2600927","DOIUrl":"https://doi.org/10.1145/2600918.2600927","url":null,"abstract":"Protocols for secure comparison are a fundamental building block of many privacy-preserving protocols such as privacy-preserving face recognition or privacy-preserving fingerprint authentication. So far, all existing secure comparison protocols that have been used in practical implementations require interaction.\u0000 In recent work, Hsu et al. (IEEE Transactions on Image Processing 2012) propose protocols for privacy-preserving computation of the scale-invariant feature transform (SIFT) in the encrypted domain. Their fundamental building block is a new protocol for performing secure comparisons under additively homomorphic encryption that requires no interaction.\u0000 In this paper we present potential for optimization and shortcomings of their secure comparison protocol. More specifically, we show that it 1) allows optimizations by shifting computation from the server to the user, 2) removes the gain that the user has in outsourcing computations to the server, and most importantly is 3) either computationally intractable for the server or insecure. As alternatives we propose to use either interactive comparison protocols or non-interactive somewhat or fully homomorphic encryption.","PeriodicalId":243756,"journal":{"name":"Information Hiding and Multimedia Security Workshop","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124763463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 28

Architecture-driven smart grid security management 架构驱动的智能电网安全管理

Information Hiding and Multimedia Security Workshop Pub Date : 2014-06-11 DOI: 10.1145/2600918.2600937

Markus Kammerstetter, L. Langer, Florian Skopik, W. Kastner

引用次数: 7

Predictable rain?: steganalysis of public-key steganography using wet paper codes 可预测的雨吗?:使用湿纸密码的公钥隐写分析

Information Hiding and Multimedia Security Workshop Pub Date : 2014-06-11 DOI: 10.1145/2600918.2600942

Matthias Carnein, Pascal Schöttle, Rainer Böhme

{"title":"Predictable rain?: steganalysis of public-key steganography using wet paper codes","authors":"Matthias Carnein, Pascal Schöttle, Rainer Böhme","doi":"10.1145/2600918.2600942","DOIUrl":"https://doi.org/10.1145/2600918.2600942","url":null,"abstract":"Symmetric steganographic communication requires a secret stego-key pre-shared between the communicating parties. Public-key steganography (PKS) overcomes this inconvenience. In this case, the steganographic security is based solely on the underlying asymmetric encryption function. This implies that the embedding positions are either public or hidden by clever coding, for instance using Wet Paper Codes (WPC), but with public code parameters. We show that using WPC with efficient encoding algorithms may leak information which can facilitate an attack. The public parameters allow an attacker to predict among the possible embedding positions the ones most likely used for embedding. This approach is independent of the embedding operation. We demonstrate it for the case of least significant bit (LSB) replacement and present two new variants of Weighted Stego-Image (WS) steganalysis specifically tailored to detect PKS using efficient WPC. Experiments show that our WS variants can detect PKS with higher accuracy than known methods, especially for low embedding rates. The attack is applicable even if a hybrid stegosystem is constructed and public-key cryptography is only used to encapsulate a secret stego-key.","PeriodicalId":243756,"journal":{"name":"Information Hiding and Multimedia Security Workshop","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132177800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6