{"title":"Indistinguishability of Traffic by Open TLS Parameters with Encrypted ClientHello","authors":"","doi":"10.1134/s1064226923120173","DOIUrl":null,"url":null,"abstract":"<span> <h3>Abstract</h3> <p>Traffic Classification (TC) is a key part of many network frameworks that provide Quality of Service (QoS) for traffic. Encrypted TC algorithms often use the Server Name Indication (SNI) field, which indicates the domain name of the server to which the client establishes a connection, and which is a clear marker of the traffic category. However, the new Encrypted ClientHello (ECH) extension, which supplements the TLS 1.3 protocol significantly complicates TC because most of the messages of the TLS handshake become encrypted, including SNI. With ECH, the accuracy of TC algorithms that use open TLS parameters significantly degrades. This paper studies the indistinguishability of the encrypted traffic considering the remaining open TLS parameters.</p> </span>","PeriodicalId":50229,"journal":{"name":"Journal of Communications Technology and Electronics","volume":null,"pages":null},"PeriodicalIF":0.4000,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Communications Technology and Electronics","FirstCategoryId":"94","ListUrlMain":"https://doi.org/10.1134/s1064226923120173","RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
Traffic Classification (TC) is a key part of many network frameworks that provide Quality of Service (QoS) for traffic. Encrypted TC algorithms often use the Server Name Indication (SNI) field, which indicates the domain name of the server to which the client establishes a connection, and which is a clear marker of the traffic category. However, the new Encrypted ClientHello (ECH) extension, which supplements the TLS 1.3 protocol significantly complicates TC because most of the messages of the TLS handshake become encrypted, including SNI. With ECH, the accuracy of TC algorithms that use open TLS parameters significantly degrades. This paper studies the indistinguishability of the encrypted traffic considering the remaining open TLS parameters.
期刊介绍：
Journal of Communications Technology and Electronics is a journal that publishes articles on a broad spectrum of theoretical, fundamental, and applied issues of radio engineering, communication, and electron physics. It publishes original articles from the leading scientific and research centers. The journal covers all essential branches of electromagnetics, wave propagation theory, signal processing, transmission lines, telecommunications, physics of semiconductors, and physical processes in electron devices, as well as applications in biology, medicine, microelectronics, nanoelectronics, electron and ion emission, etc.
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