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procd: A Privacy-preserving Robust Implementation to Discover Contacts in Social Networks

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Deifuß, Fabian ; Ihle, Cornelius ; Schubotz, Moritz ; Gipp, Bela
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Date of publication of this fulltext: 18 Apr 2021 12:46


Current instant messengers store the users’ phone book contacts typically unencrypted or hashed on a central server. In case of a server’s corruption, all contacts are either directly available in plaintext or can be unmasked using a simple dictionary attack. To solve this problem, we present procd [pʁoːst], a python implementation for privacy preserving contact discovery. procd is a trustless ...


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