公开(公告)号：DE69923319D1

公开(公告)日：2005-02-24

申请号：DE69923319

申请日：1999-06-08

Applicant: MOTOROLA INC

Inventor： DABBISH EZZAT

IPC: B60R25/00 ,  B60R25/10 ,  G07C9/00 ,  H04L12/28 ,  H04Q9/00 ,  H04K1/00 ,  H04L9/32

Abstract: A method of user-transparent auto re-synchronization for a remote keyless entry system includes assigning a default challenge-count window (101). A first data packet including a first transmitter-side symbolic count (103) and a first command code is transmitted by a transmitter (200) and authenticated by a receiver (250). An auto-synchronization challenge-count window is assigned when the first transmitter-side symbolic count (103) is not bounded within the challenge-count window (109). A second data packet including a second transmitter-side symbolic count (103) and a second command code is transmitted by the transmitter (200) and authenticated by the receiver (250). The challenge-count window is returned to the default challenge-count window, when the second transmitter-side symbolic count is bounded within the auto-synchronization challenge-count window and the receiver-side symbolic count (123). Then the second command code is executed (127).

公开(公告)号：DE69923319T2

公开(公告)日：2006-04-06

申请号：DE69923319

申请日：1999-06-08

Applicant: MOTOROLA INC

Inventor： DABBISH EZZAT

IPC: H04K1/00 ,  B60R25/00 ,  B60R25/10 ,  G07C9/00 ,  H04L9/32 ,  H04L12/28 ,  H04Q9/00

Abstract: A method of user-transparent auto re-synchronization for a remote keyless entry system includes assigning a default challenge-count window (101). A first data packet including a first transmitter-side symbolic count (103) and a first command code is transmitted by a transmitter (200) and authenticated by a receiver (250). An auto-synchronization challenge-count window is assigned when the first transmitter-side symbolic count (103) is not bounded within the challenge-count window (109). A second data packet including a second transmitter-side symbolic count (103) and a second command code is transmitted by the transmitter (200) and authenticated by the receiver (250). The challenge-count window is returned to the default challenge-count window, when the second transmitter-side symbolic count is bounded within the auto-synchronization challenge-count window and the receiver-side symbolic count (123). Then the second command code is executed (127).

公开(公告)号：DE69026256D1

公开(公告)日：1996-05-02

申请号：DE69026256

申请日：1990-06-18

Applicant: MOTOROLA INC

Inventor： DABBISH EZZAT

IPC: H04L9/00 ,  H04L9/28

Abstract: A soft logic cryptographic circuit that can be reprogrammed with various cipher algorithms. The cryptographic circuit can be manufactured in a non-secure environment because a security sensitive cipher algorithm can be programmed after the manufacturing process.

公开(公告)号：AU2003287406A8

公开(公告)日：2004-06-07

申请号：AU2003287406

申请日：2003-10-29

Applicant: MOTOROLA INC

Inventor： DABBISH EZZAT ,  MESSERGES THOMAS

IPC: G06F20060101 ,  G06F1/00 ,  G06F21/00 ,  H04L9/00 ,  G06F17/60

Abstract: A method and apparatus for digital-rights management is provided herein. Various forms of authorization are allowed, with each form of authorization being dependent upon an action taken on the digital content. In particular, when server-based authorization is unavailable, less-risky operations are allowed by performing an internal authorization scheme. Thus, higher security offered by a server-based DRM is required for risky actions, yet non-risky actions on the digital content may still be taken when the server is unavailable.

公开(公告)号：DE68926670T2

公开(公告)日：1996-12-19

申请号：DE68926670

申请日：1989-01-03

Applicant: MOTOROLA INC

Inventor： DABBISH EZZAT ,  BYRNS JOHN ,  MCCLAUGHRY MICHAEL ,  PUHL LARRY ,  BROWN DANIEL ,  ZIOLKO ERIC ,  BRIGHT MICHAEL

IPC: H04L9/10 ,  G06F21/00 ,  H04K1/00 ,  H04L9/06 ,  H04L9/14

Abstract: A cryptographic apparatus for encrypting and decrypting digital words includes a mechanism that permits a cipher algorithm to be electronically stored after the manufacture of the apparatus. The storing mechanism includes at least one electrically erasable, programmable gate array containing a portion of the cipher algorithm and at least one random access memory device coupled to the array for storing digital data generated by the algorithm. A mechanism which is coupled to the gate array and memory device controls the execution of the algorithm for each digital word thereby decrypting encrypted digital words and encrypting non-encrypted digital words.

公开(公告)号：AU2003287406A1

公开(公告)日：2004-06-07

申请号：AU2003287406

申请日：2003-10-29

Applicant: MOTOROLA INC

Inventor： MESSERGES THOMAS ,  DABBISH EZZAT

IPC: G06F20060101 ,  G06F1/00 ,  G06F21/00 ,  H04L9/00

Abstract: A method and apparatus for digital-rights management is provided herein. Various forms of authorization are allowed, with each form of authorization being dependent upon an action taken on the digital content. In particular, when server-based authorization is unavailable, less-risky operations are allowed by performing an internal authorization scheme. Thus, higher security offered by a server-based DRM is required for risky actions, yet non-risky actions on the digital content may still be taken when the server is unavailable.

公开(公告)号：DE69026256T2

公开(公告)日：1996-10-02

申请号：DE69026256

申请日：1990-06-18

Applicant: MOTOROLA INC

Inventor： DABBISH EZZAT

IPC: H04L9/00 ,  H04L9/28

Abstract: A soft logic cryptographic circuit that can be reprogrammed with various cipher algorithms. The cryptographic circuit can be manufactured in a non-secure environment because a security sensitive cipher algorithm can be programmed after the manufacturing process.

公开(公告)号：DE68926670D1

公开(公告)日：1996-07-18

申请号：DE68926670

申请日：1989-01-03

Applicant: MOTOROLA INC

Inventor： DABBISH EZZAT ,  BYRNS JOHN ,  MCCLAUGHRY MICHAEL ,  PUHL LARRY ,  BROWN DANIEL ,  ZIOLKO ERIC ,  BRIGHT MICHAEL

IPC: H04L9/10 ,  G06F21/00 ,  H04K1/00 ,  H04L9/06 ,  H04L9/14

Abstract: A cryptographic apparatus for encrypting and decrypting digital words includes a mechanism that permits a cipher algorithm to be electronically stored after the manufacture of the apparatus. The storing mechanism includes at least one electrically erasable, programmable gate array containing a portion of the cipher algorithm and at least one random access memory device coupled to the array for storing digital data generated by the algorithm. A mechanism which is coupled to the gate array and memory device controls the execution of the algorithm for each digital word thereby decrypting encrypted digital words and encrypting non-encrypted digital words.

公开(公告)号：WO2004042522A3

公开(公告)日：2004-08-19

申请号：PCT/US0334738

申请日：2003-10-29

Applicant: MOTOROLA INC

Inventor： MESSERGES THOMAS ,  DABBISH EZZAT

IPC: G06F20060101 ,  G06F1/00 ,  G06F21/00 ,  H04L9/00 ,  G06F17/60

CPC classification number: G06F21/10

Abstract: A method and apparatus for digital-rights management is provided herein. Various forms of authorization are allowed (509, 511), with each form of authorization being dependent upon an action taken on the digital content. In particular, when server-based authorization is unavailable (510), less-risky operations are allowed by performing an internal authorization scheme (509). Thus, higher security offered by a server-based DRM (505) is required for risky actions, yet non-risky actions on the digital content may still be taken when the server is unavailable (513).

Abstract translation: 本文提供了一种用于数字版权管理的方法和装置。 允许各种形式的授权（509,511），每种形式的授权都取决于对数字内容采取的行动。 特别地，当基于服务器的授权不可用（510）时，通过执行内部授权方案（509）允许较低风险的操作。 因此，对于风险动作，需要基于服务器的DRM提供的更高的安全性（505），而当服务器不可用时，仍然可以采取对数字内容的非风险动作（513）。

公开(公告)号：WO2006091292A2

公开(公告)日：2006-08-31

申请号：PCT/US2006001457

申请日：2006-01-13

Applicant: MOTOROLA INC ,  LI YI Q ,  DABBISH EZZAT ,  MESSERGES THOMAS S ,  PUHL LARRY C

Inventor： LI YI Q ,  DABBISH EZZAT ,  MESSERGES THOMAS S ,  PUHL LARRY C

IPC: H04M3/00

CPC classification number: H04M1/72522 ,  H04W88/06

Abstract: A communications device (300) enabled to support both external voice communications functionality (301) (or other external communications of interest and choice) and other functionality (302) has at least a first and second mode of operation (304 and 305). The first mode of operation permits essentially all functionality while the second mode of operation precludes at least much of the other functionality in favor of preserving the viability of at least some of the external communications functionality. A selector (306) can select a given mode of operation based, at least in part, on a trigger 307 comprising, for example, a user input and/or detection of a condition of concern.

Abstract translation: 能够支持外部语音通信功能（301）（或其他感兴趣和选择的外部通信）和其他功能（302）的通信设备（300）具有至少第一和第二操作模式（304和305）。 第一种操作模式基本上允许所有功能，而第二种操作模式至少排除了许多其他功能，有利于保留至少一些外部通信功能的可行性。 选择器（306）可以至少部分地基于包括例如用户输入和/或关注条件的检测的触发器307来选择给定的操作模式。