公开(公告)号：US07969972B2

公开(公告)日：2011-06-28

申请号：US11144396

申请日：2005-06-03

申请人： Rodrigo Cordero ,  Paul Cox ,  Andrew Dellow

发明人： Rodrigo Cordero ,  Paul Cox ,  Andrew Dellow

IPC分类号： H04L12/28

CPC分类号： H04N21/64322 ,  H04N21/4381 ,  H04N21/4622

摘要： A system including input circuitry for receiving from one of a plurality of sources at least one packet stream including a plurality of packets for providing audio, video, private data and/or associated information; at least one output for outputting at least one packet of the at least one packet stream to circuitry arranged to provide an output stream; wherein the system is arranged to provide a tag indicative of the source, the tag being associated with the at least one packet.

摘要翻译： 一种包括用于从多个源中的一个源接收包括用于提供音频，视频，私人数据和/或相关信息的多个分组的至少一个分组流的输入电路的系统; 至少一个输出，用于将至少一个分组流的至少一个分组输出到布置成提供输出流的电路; 其中所述系统被布置为提供指示所述源的标签，所述标签与所述至少一个分组相关联。

公开(公告)号：US07889862B2

公开(公告)日：2011-02-15

申请号：US11523775

申请日：2006-09-18

申请人： Andrew Dellow ,  Peter Bennett ,  Rodrigo Cordero

发明人： Andrew Dellow ,  Peter Bennett ,  Rodrigo Cordero

IPC分类号： H04L9/00

CPC分类号： H04N7/162 ,  G06F12/1408 ,  H04H60/23 ,  H04N7/1675

摘要： A memory stores data in an encrypted form. A modifiable register stores a memory address, a0, defining a boundary separating the memory into two regions. The lower region stores data encrypted using a key B, and the upper region stores data encrypted using a different key A. Data stored on the boundary address is encrypted using key A. Accordingly, when data is read from a memory address a, key A is used to decrypt the data if a≧a0, and key B is used if a

摘要翻译： 内存以加密形式存储数据。 可修改的寄存器存储存储器地址a0，定义将存储器分为两个区域的边界。 下部区域存储使用密钥B加密的数据，上部区域存储使用不同的密钥A加密的数据。使用密钥A对存储在边界地址上的数据进行加密。因此，当从存储器地址a读取数据时，密钥A 如果a≥a0，则用于解密数据，如果a

公开(公告)号：US07839937B2

公开(公告)日：2010-11-23

申请号：US10167044

申请日：2002-06-11

申请人： Rodrigo Cordero ,  Patrice Woodward

发明人： Rodrigo Cordero ,  Patrice Woodward

IPC分类号： H04B1/66

CPC分类号： H04N21/42615 ,  H04N21/426 ,  H04N21/434 ,  H04N21/4341 ,  H04N21/4345

摘要： Circuitry for processing data includes a plurality of filters arranged in parallel. Input data is stored. The input data is applied to the plurality of filters to provide at least two parallel results. An operation is carried out with respect to the results.

摘要翻译： 用于处理数据的电路包括并排布置的多个滤波器。 输入数据被存储。 将输入数据应用于多个滤波器以提供至少两个并行结果。 对结果进行操作。

公开(公告)号：US07836300B2

公开(公告)日：2010-11-16

申请号：US10705782

申请日：2003-11-10

申请人： Andrew Dellow ,  Rodrigo Cordero

发明人： Andrew Dellow ,  Rodrigo Cordero

IPC分类号： H04L29/06 ,  H04L9/00 ,  H04L9/08 ,  H04N7/167

CPC分类号： H04N21/42623 ,  H04N21/26613 ,  H04N21/4623

摘要： A semiconductor integrated circuit for the processing of conditional access television signals, the circuit including an input interface for receiving encrypted television signals and an output interface for output of decrypted television signals. Control signals broadcast with the television signals include control words and common keys. The common keys are received in encrypted form, encrypted according to a secret key unique to each semiconductor integrated circuit. The input interface is connected to a decryption circuit whereby the only manner of providing the common keys to the circuit are in encrypted form encrypted according to the secret key. Due to the monolithic nature of the circuit, no secrets are exposed and the system is secure.

摘要翻译： 一种用于处理条件接收电视信号的半导体集成电路，该电路包括用于接收加密的电视信号的输入接口和用于输出解密的电视信号的输出接口。 用电视信号广播的控制信号包括控制字和公共密钥。 公共密钥以加密形式接收，根据每个半导体集成电路独有的秘密密钥进行加密。 输入接口连接到解密电路，由此向电路提供公共密钥的唯一方式是根据密钥加密的加密形式。 由于电路的整体性质，没有暴露的秘密和系统是安全的。

公开(公告)号：US20050276264A1

公开(公告)日：2005-12-15

申请号：US11144396

申请日：2005-06-03

申请人： Rodrigo Cordero ,  Paul Cox ,  Andrew Dellow

发明人： Rodrigo Cordero ,  Paul Cox ,  Andrew Dellow

IPC分类号： H04L12/28 ,  H04N5/00 ,  H04N7/52

CPC分类号： H04N21/64322 ,  H04N21/4381 ,  H04N21/4622

摘要： A system including input circuitry for receiving from one of a plurality of sources at least one packet stream including a plurality of packets for providing audio, video, private data and/or associated information; at least one output for outputting at least one packet of the at least one packet stream to circuitry arranged to provide an output stream; wherein the system is arranged to provide a tag indicative of the source, the tag being associated with the at least one packet.

摘要翻译： 一种包括用于从多个源中的一个源接收包括用于提供音频，视频，私人数据和/或相关信息的多个分组的至少一个分组流的输入电路的系统; 至少一个输出，用于将至少一个分组流的至少一个分组输出到布置成提供输出流的电路; 其中所述系统被布置为提供指示所述源的标签，所述标签与所述至少一个分组相关联。

公开(公告)号：US08191125B2

公开(公告)日：2012-05-29

申请号：US11016537

申请日：2004-12-17

申请人： Andrew Dellow ,  Rodrigo Cordero

发明人： Andrew Dellow ,  Rodrigo Cordero

IPC分类号： G06F21/00

CPC分类号： H04N21/4181 ,  G06F21/85 ,  H04N7/162 ,  H04N21/454

摘要： An embodiment comprises a semiconductor integrated circuit for restricting the rate at which data may be accessed from an external memory by a device coupled to the circuit. The rate of data access is restricted if the data access satisfies one or more conditions. For example, one of the conditions is that the device which is requesting the data is insecure. Another condition is that the requested data is privileged. A data access monitor is provided to monitor data accesses and to is arranged to generate an access signal to indicate whether the conditions are satisfied or not. A bandwidth comparator determines whether data access exceeds a threshold and, if so, the semiconductor integrated circuit is impaired to prevent further data access.

摘要翻译： 一个实施例包括半导体集成电路，用于通过耦合到该电路的装置来限制可从外部存储器访问数据的速率。 如果数据访问满足一个或多个条件，则数据访问速率受到限制。 例如，其中一个条件是请求数据的设备是不安全的。 另一个条件是请求的数据是特权的。 提供数据访问监视器以监视数据访问，并且被布置成生成访问信号以指示条件是否满足。 带宽比较器确定数据访问是否超过阈值，如果是，则削弱半导体集成电路以防止进一步的数据访问。

公开(公告)号：US20070121943A1

公开(公告)日：2007-05-31

申请号：US11523773

申请日：2006-09-18

申请人： Andrew Dellow ,  Rodrigo Cordero

发明人： Andrew Dellow ,  Rodrigo Cordero

IPC分类号： H04K1/02

CPC分类号： H04L9/0662 ,  H04L2209/04 ,  H04L2209/12

摘要： A portion of data is obfuscated by performing a bitwise XOR function between bits of the data portion and bits of a mask. The mask is generated based on the memory address of the data portion. A bitfield representing the memory address of the data portion is split into subset bitfields. Each subset then forms the input of a corresponding primary randomizing unit. Each primary randomizing unit is arranged to generate an output bitfield that appears to be randomly correlated with the input, but which may be determined from the input if certain secret information is known. The output of the primary randomizing units is input into a series of secondary randomizing units. Each secondary randomizing unit is arranged to input at least one bit of the output of every primary randomizing unit. The output of the secondary randomizing units are then combined by concatenation to form a data mask.

摘要翻译： 通过在数据部分的位和掩码的位之间执行按位XOR功能来模糊数据的一部分。 基于数据部分的存储器地址生成掩码。 表示数据部分的存储器地址的位字段被分割成子字段。 然后，每个子集形成对应的主随机化单元的输入。 每个主随机化单元被安排成产生似乎与输入随机相关的输出位域，但是如果某些秘密信息是已知的，则可以从输入确定输出位域。 主随机化单元的输出被输入到一系列二次随机化单元中。 每个二次随机化单元被布置成输入每个主随机化单元的输出的至少一位。 然后通过级联组合二次随机化单元的输出以形成数据掩码。

公开(公告)号：US08588406B2

公开(公告)日：2013-11-19

申请号：US11523773

申请日：2006-09-18

申请人： Andrew Dellow ,  Rodrigo Cordero

发明人： Andrew Dellow ,  Rodrigo Cordero

IPC分类号： H04K1/00

CPC分类号： H04L9/0662 ,  H04L2209/04 ,  H04L2209/12

摘要： A portion of data is obfuscated by performing a bitwise XOR function between bits of the data portion and bits of a mask. The mask is generated based on the memory address of the data portion. A bitfield representing the memory address of the data portion is split into subset bitfields. Each subset then forms the input of a corresponding primary randomizing unit. Each primary randomizing unit is arranged to generate an output bitfield that appears to be randomly correlated with the input, but which may be determined from the input if certain secret information is known. The output of the primary randomizing units is input into a series of secondary randomizing units. Each secondary randomizing unit is arranged to input at least one bit of the output of every primary randomizing unit. The output of the secondary randomizing units are then combined by concatenation to form a data mask.

摘要翻译： 通过在数据部分的位和掩码的位之间执行按位XOR功能来模糊数据的一部分。 基于数据部分的存储器地址生成掩码。 表示数据部分的存储器地址的位字段被分割成子字段。 然后，每个子集形成对应的主随机化单元的输入。 每个主随机化单元被安排成产生似乎与输入随机相关的输出位域，但是如果某些秘密信息是已知的，则可以从输入确定输出位域。 主随机化单元的输出被输入到一系列二次随机化单元中。 每个二次随机化单元被布置成输入每个主随机化单元的输出的至少一位。 然后通过级联组合二次随机化单元的输出以形成数据掩码。

公开(公告)号：US20070124811A1

公开(公告)日：2007-05-31

申请号：US11523775

申请日：2006-09-18

申请人： Andrew Dellow ,  Peter Bennett ,  Rodrigo Cordero

发明人： Andrew Dellow ,  Peter Bennett ,  Rodrigo Cordero

IPC分类号： G06K9/00

CPC分类号： H04N7/162 ,  G06F12/1408 ,  H04H60/23 ,  H04N7/1675

摘要： A memory stores data in an encrypted form. A modifiable register stores a memory address, a0, defining a boundary separating the memory into two regions. The lower region stores data encrypted using a key B, and the upper region stores data encrypted using a different key A. Data stored on the boundary address is encrypted using key A. Accordingly, when data is read from a memory address a, key A is used to decrypt the data if a≧a0, and key B is used if a

摘要翻译： 内存以加密形式存储数据。 可修改的寄存器存储一个存储器地址，即定义将存储器分隔成两个区域的边界的<0> 。 下部区域存储使用密钥B加密的数据，上部区域存储使用不同的密钥A加密的数据。使用密钥A对存储在边界地址上的数据进行加密。因此，当从存储器地址a读取数据时，密钥A 用于解密数据，如果> = a> 0 ，并且如果 0 使用键B。 然而，当数据被写入存储器地址a时，如果a> = a <0> +1，则使用密钥A来加密数据，如果A / SUB> +1。 当数据被写入边界地址时，<0> ，使边界的位置增加一个单位。

公开(公告)号：US08458761B2

公开(公告)日：2013-06-04

申请号：US10167242

申请日：2002-06-11

申请人： Rodrigo Cordero ,  Patrice Woodward

发明人： Rodrigo Cordero ,  Patrice Woodward

IPC分类号： H04N7/16

CPC分类号： H04N21/42615 ,  H04N21/426 ,  H04N21/434 ,  H04N21/4341 ,  H04N21/4345

摘要： A receiver for receiving a data stream comprises a filtering arrangement for filtering said received data stream and a processor. The filtering arrangement is arranged to load at least a part of said data stream, to filter at least part of said data stream and to read at least part of said data stream. The filtering arrangement has a first mode in which said steps are carried out and a second mode in which said processor is arranged to interrupt the steps carried out by said filtering arrangement.