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    Key ladder apparatus and method
    32.
    发明授权
    Key ladder apparatus and method 有权

    公开(公告)号：US09735956B2

    公开(公告)日：2017-08-15

    申请号：US14809300

    申请日：2015-07-27

    Applicant: Cisco Technology, Inc.

    Inventor： Yaron Sella ,  Michal Devir ,  Harel Cain ,  Perry Smith

    IPC: H04L9/00 ,  H04L9/08 ,  G09C1/00 ,  G06F21/72

    CPC classification number: H04L9/0816 ,  G06F21/602 ,  G06F21/72 ,  G09C1/00 ,  H04L9/002 ,  H04L9/0822 ,  H04L9/14 ,  H04L2209/12 ,  H04L2209/38 ,  H04L2209/60

    Abstract: In one embodiment a method, apparatus and system for is described for receiving a first input including a first decryption key and a second input including an encrypted second decryption key at a cryptographic decryption apparatus, the encrypted second decryption key to be decrypted by the cryptographic apparatus according to the first decryption key, storing a value of a key ladder length in a first register by a cryptographic processor, and using the stored value as a loop index by the cryptographic processor for a number of iterations of the cryptographic decryption apparatus executed as a loop, wherein at one stage in the loop execution of the cryptographic decryption apparatus, the second input includes the key ladder length, wherein the loop operation of the cryptographic decryption apparatus operates for a number of iterations equal to an initial value of the loop index. Related methods, apparatuses and systems are also described.

    Trust enabled communication system
    33.
    发明授权
    Trust enabled communication system 有权
    信任启用通信系统

    公开(公告)号：US09544424B1

    公开(公告)日：2017-01-10

    申请号：US14979712

    申请日：2015-12-28

    Applicant: Cisco Technology, Inc.

    Inventor： Harel Cain ,  Yaron Sella ,  Michal Devir ,  David Wende

    IPC: H04M3/42 ,  H04L9/32

    CPC classification number: H04L9/3268 ,  H04L9/3231 ,  H04L9/3247 ,  H04M3/38 ,  H04M2201/18 ,  H04M2203/6045 ,  H04M2203/6072

    Abstract: In one embodiment, a system to provide trust during an audio call between a first and second party includes a communication interface to receive a voice certificate including a voice pattern, a first certificate ID and a first digital signature, an attribute certificate including an attribute, a second certificate ID and a second digital signature, and processing hardware to compare a voice sample of the second party to the voice pattern, verify the voice certificate, verify the attribute certificate, verify at least one attribute signing organization certificate, compare the first certificate ID to the second certificate ID, and provide an indication that the second party in the audio call has the attribute based on a positive result to the above processing.

    Abstract translation: 在一个实施例中，在第一和第二方之间的音频呼叫期间提供信任的系统包括用于接收包括语音模式，第一证书ID和第一数字签名的语音证书的通信接口，包括属性的属性证书， 第二证书ID和第二数字签名，以及处理硬件以将第二方的语音样本与语音模式进行比较，验证语音证书，验证属性证书，验证至少一个属性签名组织证书，比较第一证书 ID到第二证书ID，并且提供指示音频呼叫中的第二方基于对上述处理的肯定结果具有属性。

    Watermark With Data Integrity Verification
    34.
    发明申请
    Watermark With Data Integrity Verification 有权
    水印与数据完整性验证

    公开(公告)号：US20150200773A1

    公开(公告)日：2015-07-16

    申请号：US14153387

    申请日：2014-01-13

    Applicant: Cisco Technology Inc.

    Inventor： Yaron Sella ,  Harel CAIN ,  Michal DEVIR

    IPC: H04L9/08 ,  H04N1/32

    CPC classification number: H04L9/0816 ,  H04L9/065 ,  H04L2209/24 ,  H04L2209/30 ,  H04L2209/608 ,  H04N1/32144 ,  H04N2201/3236 ,  H04N2201/3281 ,  H04N2201/3284

    Abstract: In one embodiment, a system including a processor is operative to receive a content item including a watermark encoding a series of encrypted bits deriving from encrypting an information element multiple times, extract at least some encrypted bits from at least part of the watermark, decrypt a series of N bits using a first key yielding a first value, the series of N bits including Q bits of the encrypted bits and K, greater than, or equal to zero, guessed bits, re-encrypt the first value using a second key yielding a second value, and compare at least part of the second value to M bits of the encrypted bits to determine if at least part of the second value matches the M bits in order to provide a level of confidence that the first value is the information element which was encrypted and embedded as the watermark.

    Abstract translation: 在一个实施例中，包括处理器的系统可操作以接收包含编码从多个信息元素加密得出的一系列加密比特的水印的内容项，从至少部分水印中提取至少一些加密比特，解密 使用产生第一值的第一密钥的N个比特序列，包括加密比特的Q比特的N个比特序列以及大于或等于零的猜测比特，使用第二个密钥对第一个密钥进行加密 第二值，并将第二值的至少一部分与加密比特的M比特进行比较，以确定第二值的至少一部分是否与M比特匹配，以便提供第一值是信息元素的置信度 它被加密并嵌入水印。

    Security for a wireless ECU vehicle system
    35.
    发明授权
    Security for a wireless ECU vehicle system 有权
    无线ECU车辆系统的安全

    公开(公告)号：US09045095B2

    公开(公告)日：2015-06-02

    申请号：US14027611

    申请日：2013-09-16

    Applicant: Cisco Technology Inc.

    Inventor： Yaron Sella ,  Chaim Shen-Orr

    IPC: B60R16/023 ,  H04W12/04 ,  H04L9/08 ,  H04W4/04 ,  H04L29/08

    CPC classification number: B60R16/023 ,  H04L9/0819 ,  H04L63/18 ,  H04L67/12 ,  H04W4/046 ,  H04W12/04

    Abstract: A secure wireless vehicle control system includes a power source installed in a vehicle and a plurality of electronic control units (ECUs) operative to control the operation of components of the vehicle, where each of the ECUs is connected to the power source via electrical wiring, configured with at least a communications unit for receiving security information via the electrical wiring, and also configured with a wireless transceiver operative to use the security information to secure wireless transmission. An ECU includes a wired connection to a vehicle's power source, a communications unit operative to at least receive security information via the wired connection, and a wireless transceiver operative to communicate with at least one other ECU, where the wireless transceiver is configured to use the security information to secure communications with the at least one other ECU. A method for securing wireless communications for an ECU includes receiving security information on a communications unit via a wired connection to a vehicle's power source, and using the security information to secure the wireless communications.

    Abstract translation: 安全的无线车辆控制系统包括安装在车辆中的电源和多个电子控制单元（ECU），其操作用于控制车辆部件的操作，其中每个ECU通过电线连接到电源， 配置有至少一个用于经由电线接收安全信息的通信单元，并且还配置有可操作以使用安全信息来确保无线传输的无线收发器。 ECU包括到车辆电源的有线连接，可操作以至少经由有线连接接收安全信息的通信单元和可操作以与至少一个其它ECU通信的无线收发器，其中无线收发器被配置为使用 安全信息以确保与至少一个其他ECU的通信。 一种用于确保ECU的无线通信的方法包括：经由与车辆电源的有线连接在通信单元上接收安全信息，以及使用该安全信息来确保无线通信。

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