Design a digital transmission system using PSK for the transmission and reception of
text messages. ....etc

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What scrambling/ encryption does Hughesnet use in the 2 way communication provided by their services?

Any help or page link would be helpful

Thank you

Caleb Boston ....etc

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Efficient Frequency Domain Selective Scrambling of Digital Video at java

Abstract:
Multimedia data security is very important for multimedia commerce on the Internet such as video-on-demand and real-time video multicast. Traditional cryptographic algorithms/systems for data security are often not fast enough to process the vast amount of data generated by the multimedia applications to meet the real-time constraints. This paper presents a joint encryption and compression framework in which video data are scrambled efficiently in the ....etc

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plese give me more information about digital transmission system using psk for the transmission and reception of text messages ....etc

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Project type: System project, tools
Project title: Data Scrambling tool
Abstract
Banks need to protect the identity of its customers. Therefore there is a need to mask all the confidential data, such as, customer name and address, required for its testing. Further masking has to be done in a way such that the integrity of the data in terms of check digits, range checks based on branch code / product types etc. is not lost.
The Data scrambling tool will mask the Production Data. The masked data will reside in a normalize ....etc

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t is an encryption system based on the proprietary 40-bit encryption stream cipher algorithm. Became real in the year 1996, now it is widely used in some of the DVD systems. The Content Scramble System key set or the CSS key set, which contains the authentication key, disc key, player key, title key, second disk key set and the encrypted key, are legally outsourced with licences, to different manufactures, to use in their products like the DVD drives, DVD players and DVD movie releases. ....etc

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Text Digital Watermarking Of A Malayalam Text Document Based On Fragments Regrouping Strategy
Problem Definition
Embedding a digital watermark into a digital text document that carries information unique to the copyright owner or the creator of the document.
Introduction
Digital Watermarking
Text Digital Watermarking
Process of embedding a digital watermark into a digital text document.
Proposed in 1995 by Brassil and Low.
Classification
Based on the format
Based on Expand space
Based on sema ....etc

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i m a student in BEIT.we are making a project in steganography.
we want algorithms to implement text in audio and image in audio steganography.
we also want source code in c++ or matlab which will provide some help. ....etc

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1.1 INTRODUCTION
Encryption of the image and audio data using the conventional methods of cryptography has certain limitations in the cryptographic strength and large computational effort due to huge amount of data and high correlation among pixels. Some of the popular public key encryption methods, such as RSA, El Gamal are not suitable for encryption of large data files and images, because their encryption rate is slow. Moreover, the security of such public key cryptographic schemes relies on the inability to perfo ....etc

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What scrambling method/ encryption does hughesnet use for the 2 way communication in their service?

Any advice or page link will be helpful

Thank you,
Caleb Boston ....etc

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