公开(公告)号：EP2786253A1

公开(公告)日：2014-10-08

申请号：EP12791783.9

申请日：2012-11-29

申请人： Viaccess

发明人： BARAU, Emmanuel ,  SOQUET, Patrick

IPC分类号： G06F11/16 ,  G06F21/55 ,  G06F21/79

CPC分类号： G06F21/55 ,  G06F11/08 ,  G06F11/1076 ,  G06F11/167 ,  G06F21/554 ,  G06F21/556 ,  G06F2221/2143

摘要： The invention relates to a datum reading error detection method, comprising: a) recording a first copy of the datum in a first area of an electronic storage and recording a second copy of the datum in a second area of an electronic storage; b) reading (68) the values of the first and second copies of the datum in, respectively, the first and second areas; c) comparing (74) the values read from the first and second copies of the datum; e) if the values read from the first and second copies are different, then the preceding Steps b) and c) are repeated (78, 80); f) if the values read during step e) are identical, then an error in reading said datum is detected (82), and if the values are not identical, then no error in reading said datum is detected.

摘要翻译： 公开了一种用于检测数据项的读取中的错误的方法，该方法包括：a）将数据项的第一副本存储在电子存储器的第一区域中，并将数据项的第二副本存储在 电子存储器的第二区域。 在步骤b中，还包括分别读取第一和第二区域中的数据项的第一和第二副本的值。在步骤c）中，这里是第一和第二副本的读取值的比较 数据项，如果第一和第二副本的读取值不同，则重复上述步骤b）和c）（78,80），然后f）如果在步骤e）中读取的值相同，则错误 检测到该数据项的读取（82），否则检测到该数据项的读取中没有错误。

公开(公告)号：EP1716706B1

公开(公告)日：2014-07-23

申请号：EP05728113.1

申请日：2005-02-17

申请人： Viaccess

发明人： BEUN, Frédéric ,  BOUDIER, Laurence ,  ROQUE, Pierre ,  TRONEL, Bruno

IPC分类号： H04N21/418

CPC分类号： H04N7/167 ,  H04N7/163 ,  H04N21/4181 ,  H04N21/4367 ,  H04N21/4623

公开(公告)号：EP2596623A1

公开(公告)日：2013-05-29

申请号：EP11734159.4

申请日：2011-07-22

申请人： Viaccess

发明人： BOIVIN, Mathieu ,  DUBROEUCQ, Gilles

IPC分类号： H04N5/00 ,  H04N7/167

摘要： This method for detecting illegal use of a security processor used for descrambling various multimedia contents broadcast on a plurality of respective channels involves: - incrementing (153) a counter Kch
i by a predetermined step each time that, following the verification, a message ECM
i,c is received within a time window immediately following a message ECM
i,p and, in a converse case, reinitializing (158) the counter Kch
i to its initial value, - detecting (162) illegal use as soon as the counter Kch
i reaches a predetermined threshold.

公开(公告)号：EP2225693B1

公开(公告)日：2012-03-28

申请号：EP08867595.4

申请日：2008-12-02

申请人： Viaccess

发明人： LEPORINI, David ,  GADACHA, Haythem

IPC分类号： G06F21/00 ,  G06F21/02 ,  G06F21/24

CPC分类号： G06F21/54 ,  G06F21/645 ,  G06F21/77

摘要： The invention relates to a conditional connection that permits the execution of a specific processing of a datum D if the Boolean expression between one or more operands is satisfied, or otherwise prohibits the execution of said processing. The method for securing the conditional connection comprises: a) calculating (36, 48, 50) a datum D' from the datum D and the operands of the Boolean expression so that the datum D' is identical to the datum D if and only if the Boolean expression is satisfied and so that the datum D' has another so-called invalid value if the Boolean expression is not satisfied, the datum D' being coded over a plurality of bits; and b) using the datum D' in place of the datum D upon each execution of the specific processing.

公开(公告)号：EP1894348B1

公开(公告)日：2010-08-18

申请号：EP06778926.3

申请日：2006-06-12

申请人： Viaccess

发明人： NEAU, Louis

IPC分类号： H04L12/22 ,  H04L29/06

CPC分类号： H04L63/0807 ,  H04L63/126 ,  H04L2463/101

公开(公告)号：EP1987652B1

公开(公告)日：2009-08-19

申请号：EP07731020.9

申请日：2007-02-21

申请人： Viaccess

发明人： CARLES, Philippe

IPC分类号： H04L29/06 ,  H04N7/167

CPC分类号： H04N7/165 ,  H04L63/061 ,  H04N21/26613 ,  H04N21/472 ,  H04N21/64 ,  H04N21/64322

摘要： This method of establishing a cryptographic session key comprises: a subscription phase (104) during which an identifier of a local loop to the end of which a receiver must be connected is acquired, and an authentication step comprising: a) an operation (142) of automatically obtaining an identifier of the local loop to the end of which the receiver is actually connected, and b) an operation (146) of verifying that the identifier obtained during the operation a) corresponds to the identifier acquired during the subscription phase so as to authenticate the receiver.

公开(公告)号：EP2027667A1

公开(公告)日：2009-02-25

申请号：EP07788889.9

申请日：2007-06-13

申请人： Viaccess

发明人： CARLES, Philippe ,  CHEVALLIER, Anthony ,  DUBROEUCQ, Gilles ,  LANFRANCHI, Stéphane

IPC分类号： H04L9/32 ,  H04N7/167

CPC分类号： H04L9/0833 ,  H04L9/3271 ,  H04L2209/601 ,  H04N21/2347 ,  H04N21/25816 ,  H04N21/26606 ,  H04N21/26613 ,  H04N21/4405 ,  H04N21/4623

摘要： A method of broadcasting a scrambled multimedia programme, by way of a broadband network, in which before transmitting a licence key: - a network head carries out a step of authenticating a terminal, and - if the terminal has been successfully authenticated, the network head sends the terminal a licence transmission message containing the licence key or cryptogram of the licence key, by way of a point-to-point link, and - if the terminal is not successfully authenticated, the network head acts (at 200) in such a way as to prevent the complete descrambling by this terminal of the scrambled multimedia programme broadcast.

公开(公告)号：EP1961223A2

公开(公告)日：2008-08-27

申请号：EP06792902.6

申请日：2006-08-18

申请人： Viaccess

发明人： CHEVALLIER, Anthony ,  LANFRANCHI, Stéphane ,  MAGIS, Erwann

IPC分类号： H04N7/167 ,  H04N7/173

CPC分类号： H04N7/1675 ,  G06F21/10 ,  H04N7/165 ,  H04N7/17318 ,  H04N21/4147 ,  H04N21/436 ,  H04N21/440281 ,  H04N21/4623 ,  H04N21/47202 ,  H04N21/6334

摘要： The invention relates to a method of controlling access to a scrambled digital content distributed to a pool of receiver terminals comprising a master terminal and at least one slave terminal that is dependent on said master terminal, in which method the slave terminal routinely or occasionally returns at least one item of information of an access condition associated with the content to the master terminal via a point-to-point link so as to allow said master terminal to control access to the content by said slave terminal.

公开(公告)号：EP1570662B1

公开(公告)日：2007-04-04

申请号：EP03799717.8

申请日：2003-12-11

申请人： Viaccess

发明人： LE BARS, Bernard ,  AALST, Theo Van

IPC分类号： H04N7/16

CPC分类号： H04N21/4367 ,  H04N7/163 ,  H04N21/26606 ,  H04N21/4623

摘要： The invention relates to a method of distributing scrambled services and/or data to at least one master terminal and at least one slave terminal which is connected to the master terminal station. The inventive method comprises the following steps consisting in: transmitting a first secret code SM to the master terminal and a second secret code SS, having a one-to-one correspondence with said first secret code SM, to the slave terminal; and authorising the receipt of data and/or services by the slave terminal only if the first secret code, SM, has already been saved in the slave terminal.

公开(公告)号：EP1749401A1

公开(公告)日：2007-02-07

申请号：EP05766645.5

申请日：2005-05-24

申请人： Viaccess

发明人： BEUN, Frédéric ,  BOUDIER, Laurence ,  ROQUE, Pierre ,  TRONEL, Bruno

IPC分类号： H04N7/167

CPC分类号： H04N7/1675 ,  H04N7/163 ,  H04N21/23476 ,  H04N21/26606 ,  H04N21/44055 ,  H04N21/4623

摘要： The invention relates to a method for the transmission of digital data to a group of target receiver terminals wherein said data is scrambled prior thereto by a series of control words transmitted in a conditional access control method. The method consists in the following: transmission -customization of the access control method by a reversible F function wherein the F-1inverse function can be executed solely in the terminals of the target group; reception: recovery of the original control message in each terminal of the target group by means of said inverse function.