Satellite Reception at Home

Total Page:16

File Type:pdf, Size:1020Kb

Satellite Reception at Home SATELLITE TV RECEPTION 19.2° East - Astra 1A, B, C, D, E. 13° East: Eutelsat II Fl and Hot Bird 1" (Continued) Dish size required: 48cm in SE England, 60cm most of England, EDTV Dubai* Arabic / English 80cm in the rest of the British Isles. NBC Superchannel English Frequency bands: 10,700 - 12,100MHz. BBC World (news) English Sky News, CNN (news) English Euronews English / multilingual NBC Superchannel/CNBC English / German / Dutch TRT International Turkish / German / English Eurosport English / multilingual VIVA (youth / music), VIVA 2 (music) German TNT (films), Cartoon Network English / French RTL, RTL 2 German NHK Japan Japanese (some English) Polonia 1 Polish Arte (cultural) German / French ARTE (cultural) French ZDF, WDR3, MDR3 German M BC Arabic Bayern 3, Sudwest 3 German Deutsche Welle TV German / English / Spanish RTL, RTL 2, Super RTL German Canal Horizons* French (Nagravision) VOX, SAT 1, Kabel 1 German MTV Europe (youth / music) English (Videocrypt II) 3sat, PRO 7, ARD German Thirty-eight different radio stations, mainly Spanish, English, German, French, Italian and DSF (Sports), N3, Hot (Shopping) German Polish are transmitted on FM analogue audio sub-carriers. n-tv (news) German Galavision Spanish (from Mexico) 10° East - Eutelsat II F2 China News & Entertainment Chinese Dish size: 80cm in SouthernEngland and 1.2m in the rest of 3 versions of TV3 Danish / Norwegian / Swedish (D2MAC M) the British Isles. Veronica, SBS6, RT4, RT5 Dutch (Luxcrypt PAL) Frequency bands: 10,950 - 11,700 and 12,500 - 12,750MHz. Minimax, Cinemania, Documania Spanish (Nagravision) Vasa TV Slovak Teleclub, Premiere German (Nagravision) ATV Turkish Zee TV Hindi/some English (Videocrypt) Europe by Satellite (EU Commission) English / French / German QVC (home shopping) English (free access Videocrypt) TGRT Turkish Sky TV offer various tiers of subscription to 26 other English 'channels', which time-share 16 ET! Greece Greek different transponders, eg Bravo, Sky One, Sky Sports (see a TV listings magazine for details). World Net (US Information Agency) English Fifty-eight different radio programmes in an assortment of languages are transmitted on FM MED TV Kirmanji Kurdish audio sub-carriers. These include BBC World Service, BBC Radios 1 - 5 and a host of German Interstar Turkish domestic radio stations. RTP Internacional (will move to 13° East) Portuguese Seventeen different radio stations are transmitted on FM analogue audio sub-carriers. 16° East - Eutelsat 2 F3 Dish size: 80cm minimum in Southern England, 1.2m in the 7° East - Eutelsat II F4 rest of the British Isles. Dish size: 1.2m in Southern England and 1.5m in the rest of the British Isles. Frequency bands: 10,950 - 11,700 and 12,500 - 12,750MHz. Algerian TV Arabic/French Frequency bands: 10,950 - 11,700 and 12,500 - 12,750MHz. Egyptian Space TV Arabic E BU Sound-in-sync vision circuits Moroccan TV, Tunisian TV7 Arabic RTS Serbia Serbian Muslim TV Ahmadiyya Multi RIK Cyprus Greek Arab Radio & TV Europe Arabic Croatian HTV Croatian 1° West - Intelsat 702 TV Shqiptar (2 hrs daily) Albanian Dish size: 1 metre throughout British Isles. Duna TV Hungarian Frequency bands: 10,950 - 11,700MHz. Canal Plus Polska Polish (Nagravision) TV Norge Norwegian Rendez Vous French (D2-MAC M) NRK Norwegian (clear D-MAC) Tele Pace (Vatican) Italian Three versions of TV3 Danish / Norwegian / Swedish (D2MAC M) Euro 7 Dutch Romanian TV Romanian 5° West - Telecom 2B Dish size: 60 -80cm in SouthernEngland and 1m in the rest 13° East: Eutelsat II Fl and Hot Bird 1* of the British Isles Dish size: 80cm for Eutelsat II F2 and 70cm for Hot Bird 1* Frequency band: 12,500 - 12,750MHz. in Southern England. 1.2m for Eutelsat II F2 and TF1, France 2, ARTE French (Secam) 80cm for Hot Bird 1* in the rest of the British La Cinquieme, M6 French (Secam) Tele Monte Carlo, La Chame Info French (Syster) (Secam) Isles. Frequency bands: 10,950 - 11,700 and 12,500 - 12,750MHz. RTL-9, RTL-TVi French (Smartcrypt) (Secam) Nine different radio stations are ca ed on FM analogue audio sub-carriers. Eurosport* English / multilingual RAIUNO* Italian 30° West - Hispasat 1A/1B RAIDUE* Italian European Business News* English Dish size: 60 -80cm in SouthernEngland and 1m in the rest TVE Internacional* Spanish of the British Isles. MCM* (music) French Frequency bands: 11,500 - 11,700MHz and 12,000 - 12,750 MHz. TM 3* German Tele Noticias (news) Spanish (from Miami) TV Polonia*, Polsat* Polish Tele Deporte (sport) Spanish TV5*, MCM* (youth / music) French Canal Clasico, Tele 5 Spanish All programmes are general entertainment channels unless otherwise stated or the channel name is an obvious one, eg Eurosport, Euronews. All TV signals are clear PAL 625-line signals, unless otherwise indicated. Encryption systems are Videocrypt (mainly UK), Nagravision (France, Germany and Spain use differen YPes), Luxcrypt (all aimed at Dutch speakers) and Smartcrypt (miscellaneous). Table 1: The main satellites which can be received in the UK, with the stations and languages of the broadcasts. figure, receive noise figure, and individual By referring to Fig 1, it can be seen that a SATELLITE RECEPTION variations in transponder output into account, 90cm dish is required (in most of the UK) to AT HOME the following applies to Ku-band: receive good quality reception from the Eutelsat II satellite. DIRECT HOME RECEPTION of C-band sat- Dish Good Fair Poor All consumer products, satellite TV ellite TV and radio started in the United States Size Reception Reception Reception magazines and hobbyist publications simply once communications satellites were available 60cm 51dBW 48dBW 45dBW refer to C and Ku-band, but actually mean for the distribution of programming to cable 80cm 49dBW 46dBW 43 dBW only the specific frequency ranges above. It networks. Suddenly TV was available beyond 90cm 47dBW 44dBW 41dBW should also be noted that all other satellites - the urban areas and dishes started sprouting, 1.2m 45dBW 42dBW 39dBW weather, GPS, amateur etc - use different fre- particularly in rural districts. Small stations quencies. also discovered that there was a small but eager RADIO COMMUNICATION February 1996 61 .
Recommended publications
  • Tuesday 13 November 2007
    Tuesday 13 November 2007 RE: Response to the proposed BSkyB digital terrestrial television services consultation I wish to start by personally thanking you for allowing me to respond to the plans that British Sky Broadcastings plans to launch their Picnic platform on Digital Terrestrial Television, including the launch of the following services: z Sky Sports One; z A children's channel/Sky Movies SD One; z A factual channel/Sky News/Sky One; z Sky News (if BSkyB is given permission to launch a fourth service on DTT using MPEG-4 encoding); z Broadband up to 16Mbps and a telephony service. I wish to begin by giving an idea of my thoughts on the proposal by BSkyB before I answer the questions in the consultation document. Introduction 1. Regarding the use of by BSkyB and NDS Group, the VideoGuard conditional access technology for its pay television services. According to the press release that was released by BSkyB on the 8th of February 2007,1 the service will use a highly secure conditional access system similar to the one BSkyB uses for its digital satellite services, Sky Digital and FreesatFromSky. I also understand that Sky has also stated that viewers will require a new set-top-box to access the new service. In the past, since the launch of the Sky satellite television service in February 1989 via the Astra satellite, BSkyB have always used NDS Group technology to encrypt and protect their own branded services, with both the VideoCrypt and VideoGuard conditional access systems for their Sky analogue and digital satellite services respectively.
    [Show full text]
  • 3.3 Traitor Tracing Algorithm
    Traitor Tracing through Function Sharing by CemrQelebiler Submitted to the Department of Electrical Engineering and Computer Science in partial fulfillment of the requirements for the degrees of Master of Engineering and Bachelor of Science in Computer Science and Engineering at the MASSACHUSETTS INSTITUTE OF TECHNOLOGY February 1996 @ Cem Qelebiler, MCMXCVI. All rights reserved. The author hereby grants to MIT permission to reproduce and distribute publicly paper and electronic copies of this thesis document in whole or in part, and to grant others the right to do so. ;/// Author .. ................... 7..F. ................................ Departmenrd of Elvctr 1l Engineering and Computer Science ' 'December 15, 1995 C ertified by ....... : .. ........................................ Silvio Micali 'I t Profiorpof Computer Science ,.Thesis Supervisor Accepted by .. \... .. .......................... F.R. Morgenthaler sc•-srrs., ucE64sm •,Department ommittee ofr Graduate Theses OF TECHNOLOGY JUN111996 cng. UBRARIES Traitor Tracing through Function Sharing by Cem Q~elebiler Submitted to the Department of Electrical Engineering and Computer Science on December 15, 1995, in partial fulfillment of the requirements for the degrees of Master of Engineering and Bachelor of Science in Computer Science and Engineering Abstract To broadcast information (for example pay-television) over insecure channels (for ex- ample the public airwaves) to a set of paying subscribers, the broadcaster may employ encryption to prevent non-subscribers from gaining access to the programming. A risk to the broadcaster is that subscribers may sell or give their decryption key to non-subscribers and thus deprive the broadcaster of potential revenue. Traitor trac- ing schemes are key management schemes that allow the broadcaster to trace any subscriber who sells his key.
    [Show full text]
  • Institutionen För Systemteknik 581 83 LINKÖPING
    Avdelning, Institution Datum Division, Department Date 2004-06-04 Institutionen för systemteknik 581 83 LINKÖPING Språk ISBN Language Rapporttyp Report category Svenska/Swedish Licentiatavhandling ISRN LITH-ISY-EX-3533-2004 X Engelska/English X Examensarbete C-uppsats Serietitel och serienummer D-uppsats Title of series, numbering ISSN Övrig rapport ____ URL för elektronisk version http://www.ep.liu.se/exjobb/isy/2004/3533/ Titel Plastkortsystem och brottsmöjligheter, en genomgång av egenskaper hos kort och läsare Title Plastic card frauds, a survey of current relevant card and system properties Författare Natalia Savostyanova and Valeriya Velichko Author Sammanfattning Abstract Recently the society has been turning from the use of paper-based technologies to plastic cards in certain spheres of our life. With the emergence and proliferation of high technologies we cannot content with the security provided by paper only. Therefore the society has chosen plastic to protect its information because it offers far more security based not only on human perception but also on machine-readable elements. The number of plastic cards in circulation in different spheres of our everyday life increases constantly. They replace money, documents and allow easy and safe access to some services. In spite of its security the plastic card however is subjected to fraud. Plastic card fraud results in significant losses for the various industries. Since the first appearance of plastic cards methods of committing fraud have changed dramatically. Now there is a wide range of high technologies at the disposal of criminals as well as card manufacturers. Therefore we have put the great emphasize of this work on the analysis of the most common card technologies in the Plastic Card World, the magnetic stripe and the chip, existing crimes and main means of their committing.
    [Show full text]
  • RECE\VED Tio~ , 0 \992
    DECTEC INTERNATIONAL INC. P.D. BOX 2275, 1 962 MILLS ROAD, SIDNEY, BRITISH COLUMBIA, CANADA VBL 3SB PHONE: (604) 655-4463 . ._.... FAX: (604) 655-3906 RECE\VED tiO~ , 0 \992 • COMMISSION ftDEkAL coMMUNICATIONS y OFF:"Ir.E OF THE SECRETAR October 8, 1991 RECEIVED OCT 15 IY9, Ms Donna Searcy Secretary, Federal Communications Commission FCC M/' 1919 M Street ,.,IL BRANCH Washington, DC 20515 Dear Ms. Searcy, This letter is presented in support of a filing submitted to the Commission by the Consumer Satellite Coalition on July 1, 1991. The document filed by the CSC requested a public hearing/inquiry on the monopolistic business practices of General Instrument Corporation and the distribution and sale to consumers by the General Instrument division of Forstmann Little Corporation of a defective descrambling product which is used by consumers and cable operators to unscramble programming delivered over satellite. As a research and development firm which has spent the past three years developing a universal scrambling system designed to run multiple encryption and decryption processes through one single decoder, we submit that General Instrument has deceived the pUblic, the governments of the united States and Canada, television programmers, hollywood producers, satellite and consumer electronic retailers, and the manufacturers of Integrated Receiver Descramblers in the sales and upgrade programs associated with its videocipher II scrambling system, (exhibit A). Through our work as a well-respected research and development company who has been
    [Show full text]
  • Copyright and DRM
    CHAPTER 22 Copyright and DRM The DeCSS case is almost certainly a harbinger of what I would consider to be the defining battle of censorship in cyberspace. In my opinion, this will not be fought over pornography, neo-Nazism, bomb design, blasphemy, or political dissent. Instead, the Armageddon of digital control, the real death match between the Party of the Past and Party of the Future, will be fought over copyright. — John Perry Barlow Be very glad that your PC is insecure — it means that after you buy it, you can break into it and install whatever software you want. What YOU want, not what Sony or Warner or AOL wants. — John Gilmore 22.1 Introduction Copyright, and digital rights management (DRM), have been among the most contentious issues of the digital age. At the political level, there is the conflict alluded to by Barlow in the above quotation. The control of information has been near the centre of government concerns since before William Tyndale (one of the founders of the Cambridge University Press) was burned at the stake for printing the Bible in English. The sensitivity continued through the estab- lishment of modern copyright law starting with the Statute of Anne in 1709, through the eighteenth century battles over press censorship, to the Enlight- enment and the framing of the U.S. Constitution. The link between copyright and censorship is obscured by technology from time to time, but has a habit of reappearing. Copyright mechanisms exist to keep information out of the hands of people who haven’t paid for it, while censors keep information out of the hands of people who satisfy some other criterion.
    [Show full text]
  • Conditional Access and Digital Television
    Conditional access and digital television Research Paper 96/49 12 April 1996 The phrase "conditional access" is used to describe the systems by which subscription television companies, such as BSkyB, control viewers' access to different programmes and channels so that only those who have paid the appropriate charges can actually watch the services. This paper examines the Government's proposals for regulating conditional access services in light of EC directive 95/47/EC on television standards. This paper accompanies Research Paper 96/48 on the Broadcasting Bill [H.L.] [Bill 88 1995/96]. William Lea Science and Environment Section House of Commons Library Library Research Papers are compiled for the benefit of Members of Parliament and their personal staff. Authors are available to discuss the contents of these papers with Members and their staff but cannot advise members of the general public. CONTENTS Page I Introduction 5 A. Overview 5 B. What is conditional access? 6 C. Conditional access and subscriber management systems in the UK 7 D. Why is conditional access important? 10 E. Possible solutions 11 II EC directive 95/47/EC on television standards 13 A. History of proposals 13 B. Main provisions of directive 95/47/EC 15 C. European DVB group and the common interface 19 III Government policy document on digital terrestrial broadcasting 21 A. Introduction 21 B. BBC's response 22 C. ITV's response 22 D. BSkyB's response 24 E. ITC's response 25 F. Oftel's response 25 G. DNH's summary of responses 26 IV DTI consultation paper on the regulation of conditional access 27 A.
    [Show full text]
  • Image and Video Encryption from Digital Rights Management to Secured Personal Communication Advances in Information Security
    Image and Video Encryption From Digital Rights Management to Secured Personal Communication Advances in Information Security Sushil Jajodia Consulting editor Center for Secure Information Systems George Mason University Fairfax‚ VA 22030-4444 email: jajodia @ gmu. edu The goals of Kluwer International Series on ADVANCES IN INFORMATION SECURITY are‚ one‚ to establish the state of the art of‚ and set the course for future research in information security and‚ two‚ to serve as a central reference source for advanced and timely topics in information security research and development. The scope of this series includes all aspects of computer and network security and related areas such as fault tolerance and software assurance. ADVANCES IN INFORMATION SECURITY aims to publish thorough and cohesive overviews of specific topics in information security‚ as well as works that are larger in scope or that contain more detailed background information than can be accommodated in shorter survey articles. The series also serves as a forum for topics that may not have reached a level of maturity to warrant a comprehensive textbook treatment. Researchers as well as developers are encouraged to contact Professor Sushil Jajodia with ideas for books under this series. Additional titles in the series: INTRUSION DETECTION AND CORRELATION: Challenges and Solutions by Christopher Kruegel‚ Fredrik Valeur and Giovanni Vigna; ISBN: 0-387-23398-9 THE AUSTIN PROTOCOL COMPILER by Tommy M. McGuire and Mohamed G. Gouda; ISBN: 0-387-23227-3 ECONOMICS OF INFORMATION SECURITY by L. Jean Camp and Stephen Lewis; ISBN: 1-4020-8089-1 PRIMALITY TESTING AND INTEGER FACTORIZATION IN PUBLIC KEY CRYPTOGRAPHY by Song Y.
    [Show full text]
  • Sicherung Der Interoperabilität Als Ziel Der Regulierung Der Rundfunkübertragung
    Sicherung der Interoperabilität als Ziel der Regulierung der Rundfunkübertragung Mai 2009 Studie im Auftrag des Bundesministeriums für Wirtschaft und Technologie Klaus Merkel (IRT), Alexander Roßnagel/Alexander Scheuer/Sebastian Schweda (EMR) Unter Mitarbeit von Robert Sedlmeyer/Wolfgang Graf (IRT) und Julia Maus/Meike Ridinger (EMR) Sicherung der Interoperabilität als Ziel der Regulierung der Rundfunkübertragung Studie im Auftrag des Bundesministeriums für Wirtschaft und Technologie Klaus Merkel (IRT), Alexander Roßnagel/Alexander Scheuer/Sebastian Schweda (EMR) Unter Mitarbeit von Robert Sedlmeyer/Wolfgang Graf (IRT) und Julia Maus/Meike Ridinger (EMR) © 2009 Institut für Rundfunktechnik GmbH (IRT) Floriansmühlstr. 60 80939 München http://www.irt.de und Institut für Europäisches Medienrecht e.V. (EMR) Franz-Mai-Straße 6 66121 Saarbrücken http://www.emr-sb.de Sicherung der Interoperabilität als Ziel der Regulierung der Rundfunkübertragung Studie von IRT/EMR Inhalt EINLEITUNG/GEGENSTAND UND GANG DER UNTERSUCHUNG.............................................9 A. BESTANDSAUFNAHME UND ANALYSE DES STATUS QUO .............................................12 I. GESCHÄFTSMODELLE UND MARKTPARTNER ...........................................................................12 1. Interoperabilität in der analogen Rundfunkära......................................................................12 2. Der Marktstart des digitalen Fernsehens ...............................................................................15 3. Marktmodelle beim digitalen
    [Show full text]
  • TECHNOLÜGY Official Trade Journal of the Society of Cable Television Engineers
    è e 4 a COMMUNICATIÔNS% TECHNOLÜGY Official trade journal of the Society of Cable Television Engineers Converging on the -73 --I 0 M ri• 0 * * CJ1 ›,/14 C.51 > * 4:# 4t- Lit world 4# 4k 4# e•—• P wering today's system Trabieshooting: The basic February 1994 LOOKING FOR TROUBLE? %?leefij; ) ii 1 1 j.7-1 1 1 nzi :AO CABLE PARAMETERS DISPLAY EXPAND RANGE VERT HORIZ Sencore's CA780 "CABLEIZER" will help you find any cable fault. More Than Just ATDR 65dB Sensitivity — See even minor cable damage, One Button Measurements — Cable Length, loose connectors, water ingress. Z (impedance), VSWR, Delta Distance, Delta Return Loss 2nSec Short Range Pulse — Test to within afew feet of the TDR. BEST OF ALL Great Value — High performance at alow price. Screen Storage & Printer System Interface — Document System Performance Measurements Easy To Use — Everyone's an expert in minutes! Call 1-800-SENCORE for aFREE field evaluation today! Sencore, 3200 Sencore Drive, Sioux Falls, South Dakota, 57107 — Phone (605) 339-0100 or 1-800-736-2673 —Fax (605) 339-0317 Reader Service Number 2 TRILOGY COMMUNICATIONS INC. THE ULTIMATE CABLE SUPPLI R Prove ech ology Low L ¡Leader Ektellence -Superior Control Process State of The Art Equipment Guaranteed On Time Delivery SUPERIOR CORROSION PROTECTED DROP CABLE Trilogy Communications expends the same diligent pursuit of perfection in manufacturing dual-drop cables for TV/tele y installations, 5O cables for downlink transmissions, and RMC 2 radiating air- dielectric coaxial c e for open-air communications in highly developed or underground locations. SENDING THE RIGHT SIGNAL stee e_ rikiknYtO COMMUNICATIONS INC.
    [Show full text]
  • 6. Using Cryptimage at Startup You Will See the Main Interface : Cryptimage Interface, the Look and Feel Will Be Different Depending Your Operating System
    Cryptimage user guide 1. Introduction Cryptimage is an open source software under the license GNU GPL v3 which purpose is to reproduce old analog TV encryption systems like « discret 11 » (used between 1984 and 1995 by french TV network « canal plus ») , « nagravision syster » (used between 1995 and 2010), and « videocrypt » used by Sky TV and by several other broadcasters on astra satellites. This software allows to encrypt a video file (image and sound) , and allows also a decryption of an encrypted file, by meeting the standard of discret11, nagravision syster and videocrypt. Besides the ability to reproduce in a digital way these three encryption systems, its second use is to allow the re-use of hardware descramblers by injecting to them an encrypted video file produced by cryptimage. 2. Definition of discret 11 The discret11 process is to encrypt the image by delaying each line by three values to choose from (0, 902 and 1804 milliseconds), delays are selected through an algorithm based on a pseudo-random sequence, the sound is rendered unintelligible by subjecting it to a spectrum inversion around the frequency 12800 Hz. Discret11 encryption example, on a philips PM5544 tv card. 3. Definition of nagravision syster Nagravision syster (SYStème TERrestre) scrambles the image by permuting lines, a TV frame has 2 interlaced fields, each field has 288 lines and these lines are permuted (except line 288 which is not permuted), then the first 32 lines of each encrypted field are shifted to the previous encrypted field, which give this pattern
    [Show full text]
  • AND HOME Elecl: ONICS REPAIR 4 \
    Tips, guides and reports for people repairing televisions and electronic equipment AND HOME ELEcl: ONICS REPAIR 4 \ (4'6'. 03 -43al 133At 0 30 t 1II Ili VI .4. oat ac04. rea 01331 Ix/ 00 30 4; art .131 It a. 30 atYr ma .10. V!. 31.1/1.A oft 151- 1. jn. 1. ranse!Witl.W10_ ... 11. 14 Alf .. 34- . tat at. 311aft 113 . 0a so, 14 sr, lot Att a aat 'Sr Mr a. tat . az a. :IT 4. Irg m w 10. a-all te- ao o, 16 ., R We MI. Ill lb :'-AR ',m, 111, . SR Jt atea ar aa.' S.. .0 Mk F. 31 nal- aft . .1. At 313 3. Al la . lat Ur Ar Yr or of,oor os, tor . oo aar aia.a 103 al -IAitc E. 151 A- Pa 1hr . to... 40VI AC laAC10..4 wrr . 30 1. AG tl . 1. VI . at ruk- sou unwmaz,m tar . /JR te- InXI41' SR ala .6 30- at 133 30W . 32 so, ag-1. 1.fr tet. Iv %Tr 4,1 Aft- .1112 4.- ,ft IP= tit SF1 'aly at ar at Vsat- at' . ta 10 00t.r. 11. i.- ,oto_ uuk lir at. WI . us VI .16 MT MI Lltsrc- re al Art a fr. 03... So es, Is, wrars- to so or or . sesl. 0111,1:,4, Lar, .ftera t . LfYak.a.auk s. Satellite, PC Monitors, TVs and VCRs ENECAUSUREforr-,AY,-Llite 11/111C-- The goodnews is, we canreplace it..! Ah, Man's best friend... A loving, loyal companion but not averse to taking a fancy to those fun looking chewy things sat near the television set.
    [Show full text]
  • Analysis of the Nagravision Video Scrambling Method
    Analysis of the Nagravision Video Scrambling Method Markus G. Kuhn∗ 23 August 1998 Abstract The Kudelski Nagravision pay-TV conditional access system can be practically broken by image processing algorithms that rearrange the lines of a field based on statistical properties of typical TV images. With some knowledge about the limitations of the scrambling hard- ware one can reconstruct the scrambled TV image in real-time without knowledge of the cryptographic secret stored in the subscriber smart- card. Draft Technical Report $Id: nagra.tex,v 1.11 2000-10-11 11:40:53+01 mgk25 Exp $ 1Introduction Pay-TV broadcasters employ conditional access systems to ensure that only TV viewers who have payed a subscription fee and who have in return received a decoder box can watch the TV channel. The Nagravision [1] conditional access system for PAL television developed by Kudelski SA, Cheseaux, Switzerland, is used for instance by the pay-TV broadcasters Premiere (Germany), Teleclub (Switzerland), Canal+ (France, Spain), and Cinemania (Spain). Like with other hybrid video scrambling systems such as EuroCrypt [2,3]orVideoCrypt [4], Nagravision sends a digitally encrypted control word over the radio interface to the decoder in order to control the descrambling of an analog TV signal. The control word is decrypted in a ∗University of Cambridge, Computer Laboratory, Pembroke Street, Cambridge CB2 3QG, United Kingdom. Email: [email protected] M. Kuhn: Analysis of the Nagravision Video Scrambling Method 2 smartcard and converted into the seed value for a random number generator. This random number generator then controls the image descrambling process for the next few seconds.
    [Show full text]