ABSTRACT
Pirate decryption most often refers to the reception of compromised pay TV or pay radio signals without authorization from the original broadcaster. The term "pirate" in this case is used in the sense of copyright infringement and has little or nothing to do with sea piracy or pirate radio, which involved the operation of a small broadcast radio station without lawfully obtaining a license to transmit. The MPAA and other organizations which try to protect copyright and licensing agreements often call such decryption "signal theft".

INTRODUCTION

Satellite television is television delivered by the means of communications satellite and received by a satellite dish and set-top box. In many areas of the world it provides a wide range of channels and services, often to areas that are not serviced by terrestrial or cable providers. A free-to-air or FTA Receiver is a satellite television receiver designed to receive unencrypted broadcasts. Modern decoders are typically compliant with the MPEG-2/DVB-S and more recently the MPEG-4/DVB-S2 standard for digital television, while older FTA receivers relied on analog satellite transmissions which have declined rapidly in recent years. Pay television, premium television, or premium channels refers to subscription-based television services, usually provided by both analog and digital cable and satellite, but also increasingly by digital terrestrial methods. Some parts of the world have also offered encrypted analog terrestrial signals, available for subscription. Hackers are able to reverse-engineer the software and add the necessary coding to allow unauthorized reception of all channels offered by Dish Network, including premium movies and pay-per-view. Manufacturers, importers, and distributors of FTA receivers officially do not condone this practice and some will not sell to individuals who they believe will be using their products for this purpose. The method which the reception of unauthorized signal is called Pirate Decryption.

CONCEPT OF PAY CHANNEL
The concept of pay TV is almost as old as TV itself and involves a broadcaster deliberately transmitting signals in a non-standard, scrambled or encrypted format in order to charge viewers a subscription fee for the use of a special decoder needed to receive the scrambled broadcast signal.
Pay television, premium television, or premium channels refers to subscription-based television services, usually provided by both analog and digital cable and satellite, but also increasingly by digital terrestrial methods. Some parts of the world, notably in France and the US, have also offered encrypted analog terrestrial signals, available for subscription. Also, some providers offer channels owned by the same company in a single package. Pay television channels come in different price ranges. Many channels carrying advertising combine this income with a lower subscription fee. These are called "mini-pay" channels and are often sold as a part of a package with numerous similarly priced channels. Sometimes, the channels are also sold "a la carte", allowing consumers to select which channels they subscribe to.
There are also premium television services which have a significantly higher price than the mini-pay channels, but they compensate for their higher price by carrying little or no advertising and also providing a higher quality output.
E.g. for Pay Channels: AXN , HBO , Animal Planet, ESPN …


Chapter 03
ENCRYPTION AND DECRYPTION

In cryptography, encryption is the process of transforming information (referred to as plaintext) using an algorithm (called cipher) to make it unreadable to anyone except those possessing special knowledge, usually referred to as a key. The result of the process is encrypted information (in cryptography, referred to as ciphertext). In many contexts, the word encryption also implicitly refers to the reverse process, decryption (e.g. “software for encryption” can typically also perform decryption), to make the encrypted information readable again (i.e. to make it unencrypted). The block diagram of Encryption and decryption is shown in figure 3.1


Encryption has long been used by militaries and governments to facilitate secret communication. Encryption is now commonly used in protecting information within many kinds of civilian systems. For example, the Computer Security Institute reported that in 2007, 71% of companies surveyed utilized encryption for some of their data in transit, and 53% utilized encryption for some of their data in storage. Encryption can be used to protect data "at rest", such as files on computers and storage devices (e.g. USB flash drives). In recent years there have been numerous reports of confidential data such as customers' personal records being exposed through loss or theft of laptops or backup drives. Encrypting such files at rest helps protect them should physical security measures fail. Digital rights management systems which prevent unauthorized use or reproduction of copyrighted material and protect software against reverse engineering (see also copy protection) are another somewhat different example of using encryption on data at rest.
Encryption is also used to protect data in transit, for example data being transferred via networks (e.g. the Internet, e-commerce), mobile telephones, wireless microphones, wireless intercom systems, Bluetooth devices and bank automatic teller machines. There have been numerous reports of data in transit being intercepted in recent years. Encrypting data in transit also helps to secure it as it is often difficult to physically secure all access to networks.

PIRATE DECRYPTION
Pirate decryption most often refers to the reception of compromised pay TV or pay radio signals without authorization from the original broadcaster. The term "pirate" in this case is used in the sense of copyright infringement and has little or nothing to do with sea piracy or pirate radio, which involved the operation of a small broadcast radio station without lawfully obtaining a license to transmit. The MPAA and other organizations which try to protect copyright and licensing agreements often call such decryption "signal theft"





Satellite communication uses the property of multi sharing which explains point to multipoint communication (shown in fig 5.1). In the case encryption, the same algorithm is used, potentially, for millions of subscribed receivers and or smartcards. The compromising of art key, which is used in the algorithm, will leads to the pirated viewing of the encrypted Television or Radio channel. Fig. 5.2 shows the simplified block diagram of pirate decryption.

[attachment=13976]