{"product_id":"social-authentication-for-mobile-phones-von-bijan-soleymani","title":"Social Authentication for Mobile Phones","description":"\u003cp\u003eIn this work we present a scheme for automating  authentication based on social factors using mobile  phones. We test its feasibility by running  simulations on an existing dataset. We implement two  protocols one based on public keys and  the other on hash chains. Then we consider  threat scenarios.  Computer systems depend on the user being  authenticated securely. Usually this involves a  username and password and if more security is  required an electronic token as well. Other than  these two \"factors\" there is also biometrics, such as  fingerprints. Thus the traditional systems use some  combination of: something you know (passwords),  something you have (tokens) and something you are  (biometrics).  Recently a fourth factor: someone you know has been  suggested as well. This technique has been applied to  the problem of emergency authentication, as a  replacement for calls to a help-desk. This social  authentication is based on the process of vouching.  In this method a user asks a friend to vouch for  them. Previously this was done explicitly, with the  user asking a friend for a vouching code. In this  thesis we will use users'' cellphones to automate this  process.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783843384322\"\u003e\u003ch3\u003eA novel scheme for automating authentication via social factors such as proximity and call data from  mobile phones\u003c\/h3\u003e\u003c\/div\u003e","brand":"Autorenwelt Shop","offers":[{"title":"Softcover - 9783843384322","offer_id":39497194111069,"sku":"9783843384322","price":49.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/2228ef9f-70f0-4de9-b2b1-a22f8d914bd2.jpg?v=1759207275","url":"https:\/\/shop.autorenwelt.de\/products\/social-authentication-for-mobile-phones-von-bijan-soleymani","provider":"Autorenwelt Shop","version":"1.0","type":"link"}