Public-key support for group collaboration

Abstract

This paper characterizes the security of group collaboration as being a product not merely of cryptographic algorithms and coding practices, but also of the man-machine process of group creation. We show that traditional security mechanisms do not properly address the needs of a secured collaboration and present a research prototype, called NGC (next generation collaboration), that was designed to meet those needs. NGC distinguishes itself in the care with which the man-machine process was analyzed and shaped to improve the security of the whole process. We include a detailed analysis of the problem of binding a name to a key, traditionally thought to be the province of PKI, but we show that the SDSI local name concept produces a result with superior security to that produced by standard PKI.

Key Agreement in Peer-to-Peer Wireless Networks

“…In our paper, we consider the same problem but in a more demanding setting, as we assume that the users share no secret key prior to the key exchange. Dohrmann and Ellison [27] propose a method for key verification that is similar to our approach; this method is based on converting key hashes to readable words or to an appropriate graphical representation. However, it seems that users are required to compare a substantial number of words (or graphical objects); this task could take them as much as 24 s, according to [27].…”

“…Dohrmann and Ellison [27] propose a method for key verification that is similar to our approach; this method is based on converting key hashes to readable words or to an appropriate graphical representation. However, it seems that users are required to compare a substantial number of words (or graphical objects); this task could take them as much as 24 s, according to [27]. This time is significantly reduced when the graphical representation is used.…”

Secure Device Pairing Methods: An Overview

“… Listen-Listen: As three-word sentence is vocalized on both devices and user tries to configure their resemblance, if they appear to be similar the final response is added in two connecting devices separately. Two Speakers are required on both devices [24].…”

Ceremony Analysis: Strengths and Weaknesses

“…The concept of a ceremony was developed earlier than 2007 [8]. In the years since 2007, there has been an increasing trend to meld information security with the social sciences, as indicated by conferences both in the U.S.A 1 and in Europe 2 .…”