A visual way to talk to strangers: authentication in wireless pervasive computing

Validating Secure Connections between Wireless Devices in Pervasive Computing Using Data Matrix

“…In this technique [10], a barcode displayed or printed on another device in the association is captured with built-in digital camera of mobile devices. The captured image is then used to compare the hashed public key.…”

“…Although some of the them offer distinctive features for pervasive computing, they lack necessary factors to make them widely available: (1) well established technical standards (2) strong error checking mechanism for reliable code recognition (3) support for wide range of mobile platforms. In our earlier work [10], a 2D barcode called UniCode was developed. It has the capability of key verification described in Chapter 2, but UniCode also suffers from the weaknesses of all such sparsely used barcodes.…”

“…With the Data Matrix prepared in section 3.2, we can establish a secure spontaneous association using the following protocol [10].…”