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A secure model for mobile agent based on encrypted circuit construction
      
A dynamic, secure, and efficient group key agreement protocol
      
The key challenge of dynamic peer communication is how to realize secure and efficient group key management.
      
The protocol is proven secure against passive attack by using indistinguishable method.
      
By checking whether these variables are influenced by outside inputs, the database operations are proved to be secure or not.
      
In this paper we introduce to readers some recent progress in algebraic geometric codes and their applications in quantum error-correcting codes, secure multi-party computation and the construction of good binary codes.
      
In principle, quantum key distribution (QKD) can be used to make unconditionally secure private communication.
      
Actually, the existing experiments based on weak coherent states are not secure under photon-number-splitting attack.
      
Fortunately, the decoy-state method and the entanglement-distribution method can be used to realize the unconditionally secure QKD based on real-life systems with existing technology.
      
Quantum secure direct communication and deterministic secure quantum communication
      
We also give an ID-based deniable ring authentication based on bilinear pairings, which is proved to be secure in the random oracle model.
      
Such a rotation is convenient in the case when it is required to secure a sufficiently uniform illumination of the satellite's surface by the Sun at a comparatively small angular velocity of the satellite.
      
This is necessary in order to provide warning about the threats of critical failures in ground-based and space technological systems, thus providing for their stable and secure operation.
      
Then we show that this modified quantum privacy is the optimum achievable rate of secure transmission.
      
Then we show that this modified quantum privacy is the optimum achievable rate of secure transmission.
      
A principally new approach ensuring secure key distribution via an open quantum communication channel is proposed.
      
Using these factors, it is possible to provide for secure key transmission using practically arbitrary quantum states.
      
Free-space quantum cryptography using multiphoton states: Secure key distribution to satellites
      
The scheme remains secure even if the contribution of a single-photon component is arbitrarily small.
      
Quantum cryptography (secure key distribution) systems must include procedures for correcting errors in the raw key transmitted over a quantum communication channel.
      
 

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