الفهرس يوجد فقط 14 صفحة متاحة للعرض العام
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المستخلص
In this thesis we propose a new protocol in information transmission security using a new technology based on the quantum theory that uses the quantum mechanics phenomena and characteristics, which give a higher level of security for any cryptography scheme.
We present a new scheme here for direct secure and confidential communication between two parties, where there is no need for exchanging a shared key first, but alternatively, we construct an algorithm to send the message bits at the same time of sending the quantum bits that are used in the encoding process simultaneously on two different channels.
Also, in our proposed algorithm, we apply an important application of the quantum systems that is superdense coding. This application procedure gives, not only a higher level of security, but also a higher efficiency for the transmission process, as in this procedure we encode two classical bits per one quantum bit.
After demonstrating the main idea of the protocol, we introduce different kinds of errors that the quantum channel could be exposed to due to the noise effect, and with that we also introduce some error correcting schemes for some of them.
As the effects of the eavesDROPping on the quantum channel is very similar to the effect of the noise, we show in the security analysis some of the attacks that our protocol, and other quantum protocols, could be vulnerable to, and advice the way of treatment that we apply comparing with the other work in that issue of security.
Finally, we introduce some other modifications that could be used as a future work in this direction.