Authenticated and Secure End-To-End Communication Channel Using SMS Messages
نویسنده
چکیده
One of the key issues of modern cryptography is the problem of establishing a secure end-to-end communication over an insecure communication channel. Short Message Service (SMS) is a hugely popular and easily adopted communications technology for mobile devices. Users conduct business, disclose passwords and receive sensitive notification reports from systems using this communication technology. SMSs by default are sent in clear text form within the serving GSM (Global System for Mobile communications) network, Over The Air (OTA), and potentially over the public Internet in a predictable format. This allows anyone accessing the GSM system to read, and or modify the SMS content even on the fly. In this paper, we present an approach mainly consists of two steps, first, SHA-1 authentication is used to generate a message digest that is combined with previous message digest and a shared secret key to form an initial key stream. Secondly, this key
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