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    • 1. 发明授权
    • Smart card mating protocol
    • 智能卡配对协议
    • US07305555B2
    • 2007-12-04
    • US10109111
    • 2002-03-27
    • John I. OkimotoEric J. SprunkLawrence W. TangAnnie On-yee ChenBridget KimballDouglas Petty
    • John I. OkimotoEric J. SprunkLawrence W. TangAnnie On-yee ChenBridget KimballDouglas Petty
    • H04L9/00H04K1/00G06F11/30G06F12/14G06Q40/00H04L9/32H04N7/167H04N1/44H04K1/02
    • H04N21/254H04N7/163H04N21/2543H04N21/26609H04N21/4181H04N21/4367H04N21/4623
    • A system is described for uniquely mating components of a communication network such as a smartcard and a set-top box. When mated, the smartcard and set-top box are tied together and have a single identity. Further, the smartcard operates properly only when inserted into an authorized set-top box. Exchanges of information between both components are secured by encryption and authentication to guard against piracy of the exchanged information. The system provides the same authentication key to the set-top box and the smartcard. This key is used for authenticating communication between the set-top box and the smartcard. First, the authentication key is encrypted by a set-top box mating key. The set-top box employs this mating key to decrypt the authentication key. After it is derived, the authentication key is stored in the set-top box's memory. Further, the same authentication key is encrypted by a smartcard mating key. Thereafter, the smartcard employs the smartcard mating key to extract the authentication key. The clear authentication key is stored in the smartcard's memory as well. In this manner, the authentication key is used for securing all communication between the set-top box and the smart-card. For example, the set-top box may request control words from the smartcard. Only after authenticating the request, are the control words for decrypting digital content provided to the set-top box. If the smartcard authentication key is different from the set-top box key, the request for control words is denied.
    • 描述了用于唯一地匹配诸如智能卡和机顶盒之类的通信网络的组件的系统。 当配对时,智能卡和机顶盒被捆绑在一起并具有单一身份。 此外,仅当插入授权的机顶盒时,智能卡才能正常运行。 通过加密和认证来确保两个组件之间的信息交换,以防止所交换信息的盗版。 系统向机顶盒和智能卡提供相同的认证密钥。 该密钥用于认证机顶盒和智能卡之间的通信。 首先,认证密钥由机顶盒配对密钥加密。 机顶盒采用这种配对密钥来解密认证密钥。 导出后,身份验证密钥存储在机顶盒的内存中。 此外,相同的认证密钥由智能卡配对密钥加密。 此后,智能卡采用智能卡配对密钥来提取认证密钥。 清除认证密钥也存储在智能卡的存储器中。 以这种方式,认证密钥用于保护机顶盒和智能卡之间的所有通信。 例如,机顶盒可以从智能卡请求控制字。 只有在认证请求之后,才是解密提供给机顶盒的数字内容的控制字。 如果智能卡认证密钥与机顶盒密钥不同,则拒绝对控制字的请求。
    • 7. 发明授权
    • Enhanced authorization process using digital signatures
    • 增强使用数字签名的授权过程
    • US08321663B2
    • 2012-11-27
    • US12650943
    • 2009-12-31
    • Alexander MedvinskyTat Keung ChanEric J. Sprunk
    • Alexander MedvinskyTat Keung ChanEric J. Sprunk
    • H04L9/00
    • H04L9/3263H04L9/3247H04L63/0823H04L63/162H04L2209/60H04L2209/80H04W12/06
    • A method is provided for enhancing security of a communication session between first and second endpoints which employs a key management protocol. The method includes sending a first message to a first end point over a communications network requesting a secure communication session therewith. The message includes an identity of a second end point requesting the authenticated communication session. A digital certificate is received from the first endpoint over the communications network. The digital certificate is issued by a certifying source verifying information contained in the digital certificate. The digital certificate includes a plurality of fields, one or more of which are transformed in accordance with a transformation algorithm. A reverse transform is applied to the one or more transformed fields to obtain the one or more fields. The digital certificate is validated and a second message is sent to the first endpoint indicating that validation is complete.
    • 提供了一种用于增强使用密钥管理协议的第一和第二端点之间的通信会话的安全性的方法。 该方法包括通过通信网络向第一终端发送请求与其的安全通信会话的第一消息。 该消息包括请求认证通信会话的第二端点的标识。 通过通信网络从第一端点接收数字证书。 数字证书由认证来源验证数字证书中包含的信息。 数字证书包括多个字段,其中一个或多个字段根据变换算法进行变换。 对一个或多个变换字段应用反向变换以获得一个或多个字段。 验证数字证书,并将第二个消息发送到第一个端点,表示验证完成。
    • 8. 发明申请
    • ENHANCED AUTHORIZATION PROCESS USING DIGITAL SIGNATURES
    • 使用数字签名的增强授权过程
    • US20110161661A1
    • 2011-06-30
    • US12650943
    • 2009-12-31
    • Alexander MedvinskyTat Keung ChanEric J. Sprunk
    • Alexander MedvinskyTat Keung ChanEric J. Sprunk
    • H04L9/32H04L29/06H04L9/28
    • H04L9/3263H04L9/3247H04L63/0823H04L63/162H04L2209/60H04L2209/80H04W12/06
    • A method is provided for enhancing security of a communication session between first and second endpoints which employs a key management protocol. The method includes sending a first message to a first end point over a communications network requesting a secure communication session therewith. The message includes an identity of a second end point requesting the authenticated communication session. A digital certificate is received from the first endpoint over the communications network. The digital certificate is issued by a certifying source verifying information contained in the digital certificate. The digital certificate includes a plurality of fields, one or more of which are transformed in accordance with a transformation algorithm. A reverse transform is applied to the one or more transformed fields to obtain the one or more fields. The digital certificate is validated and a second message is sent to the first endpoint indicating that validation is complete.
    • 提供了一种用于增强使用密钥管理协议的第一和第二端点之间的通信会话的安全性的方法。 该方法包括通过通信网络向第一终端发送请求与其的安全通信会话的第一消息。 该消息包括请求认证通信会话的第二端点的标识。 通过通信网络从第一端点接收数字证书。 数字证书由认证来源验证数字证书中包含的信息。 数字证书包括多个字段,其中一个或多个字段根据变换算法进行变换。 对一个或多个变换字段应用反向变换以获得一个或多个字段。 验证数字证书,并将第二个消息发送到第一个端点,表示验证完成。