secret communication
3.This encryption algorithm is simple in principe and easy to realize. It can be used in secret communication and multi - address communication. The security of military communication can be effectively improved.
4.Subliminal channel is a channel whic h is built in the public channel in ord er to realize secret communication.
5.Aiming to solve the security problems which exist in the course of data transmission in securities settlement telnet,the authors adopt the methods of certificate authetification,network security propotol,high strength public key and symmetric cipher algorithm and key management techniques. Successfully solved are the key technique of secret communication,user identification, divulged secret detection and supervision,etc.
6.The advent of the Internet and the wide availability ofcomputers,scanners and printers make digital data acquisition,exchange and transmission a simple task.However,making digital data accessible to others through networks also creates opportunities for malicious parties to make salable copies of copyrighted content without permission of the content owner.Digital watermarking is likely to be a potential solution to this problem.Digital watermarking has been proposed as a solution to the problem of copyright protection of multimedia documents in networked environments.It makes possible to embed a watermark(such as identification data,serials number,text or image etc.)to multimedia documents allowing copyright protection,secret communication,document authentication and so on.In this paper,we present a new digital image watermarking method based on SVD(Singular Value Decomposition),and then give some theoretical analysis about the algorithm.Extensive experimental results show that this method is much more robust than other methods presented before.
7.how many lines of communication can there be among four people?; a secret passageway provided communication between the two rooms.
9.The scheme is based on distributed computing ,with which a signatory can implement data signature scheme while his private key and the secret shared with the communication peer are not revealed.
10.My study involves four areas in quantum communication, i.e., quantum key distri-bution (QKD), quantum secure direct communication (QSDC), quantum secret sharing(QSS) and quantum source coding.
