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    • 4. 发明授权
    • Key management protocol and authentication system for secure internet protocol rights management architecture
    • 用于安全互联网协议权限管理架构的密钥管理协议和认证系统
    • US07243366B2
    • 2007-07-10
    • US10092347
    • 2002-03-04
    • Alexander MedvinskyPetr PeterkaPaul MoroneyEric Sprunk
    • Alexander MedvinskyPetr PeterkaPaul MoroneyEric Sprunk
    • G06F17/30G06F7/04G06K9/00H04L9/32H04L9/00
    • H04L63/04G06Q20/367H04L63/062H04L63/08H04L2463/101
    • A digital rights management architecture for securely delivering content to authorized consumers. The architecture includes a content provider and a consumer system for requesting content from the content provider. The content provider generates a session rights object having purchase options selected by the consumer. A KDC thereafter provides authorization data to the consumer system. Also, a caching server is provided for comparing the purchase options with the authorization data. The caching server forwards the requested content to the consumer system if the purchase options match the authorization data. Note that the caching server employs real time streaming for securely forwarding the encrypted content, and the requested content is encrypted for forwarding to the consumer system. Further, the caching server and the consumer system exchange encrypted control messages (and authenticated) for supporting transfer of the requested content. In this manner, all interfaces between components are protected by encryption and/authenticated.
    • 数字版权管理架构,用于将权限安全地传递给授权消费者。 该架构包括内容提供商和用于从内容提供商请求内容的消费者系统。 内容提供商生成具有由消费者选择的购买选项的会话权限对象。 KDC此后向消费者系统提供授权数据。 此外,还提供了一个缓存服务器,用于将购买选项与授权数据进行比较。 如果购买选项与授权数据匹配,则缓存服务器将所请求的内容转发到消费者系统。 请注意,缓存服务器采用实时流式传输安全地转发加密的内容,并且所请求的内容被加密以转发到消费者系统。 此外,缓存服务器和消费者系统交换加密的控制消息(并被认证)以支持所请求的内容的传送。 以这种方式,组件之间的所有接口都受到加密和/或认证的保护。
    • 9. 发明授权
    • Generation of cryptographic signatures using hash keys
    • 使用散列键生成加密签名
    • US5754659A
    • 1998-05-19
    • US577922
    • 1995-12-22
    • Eric SprunkPaul MoroneyBrant Candelore
    • Eric SprunkPaul MoroneyBrant Candelore
    • G09C1/00H04B7/15H04L9/32H04L9/30
    • H04L9/3242H04L9/3247H04L2209/12H04L2209/38H04L2209/56
    • A method and apparatus are provided for generating a digital signature that authenticates information of a plurality of different information groups. Information from each group is hashed to produce a separate hash key for each group authenticating the information in that group. Particular combinations of the hash keys are hashed together to produce at least one combined hash key. Each of the hash keys is ultimately combined in a predetermined order with all other hash keys via the combined hash keys to produce the digital signature in a manner that authenticates the information of all of the information groups. The digital signature is reproducible without access to all of the information groups authenticated thereby. Instead, information from a first information group is provided together with a set of hash keys and combined hash keys embodying authenticated information from the other groups. The hash key for the first information group is produced locally and combined with the other hash keys and/or combined hash keys in order to reproduce the digital signature.
    • 提供了一种方法和装置,用于产生认证多个不同信息组的信息的数字签名。 来自每个组的信息被散列以产生用于认证该组中的信息的每个组的单独的散列密钥。 哈希密钥的特定组合被散列在一起以产生至少一个组合的散列密钥。 每个散列密钥最终通过组合的散列密钥以预定顺序与所有其他散列密钥组合,以便以认证所有信息组的信息的方式产生数字签名。 数字签名是可重复的,无需访问由此认证的所有信息组。 相反,来自第一信息组的信息与体现来自其他组的认证信息的一组散列密钥和组合散列密钥一起提供。 用于第一信息组的散列密钥本地产生并与其它散列密钥和/或组合散列密钥组合以便再现数字签名。
    • 10. 发明授权
    • Cryptographic apparatus with double feedforward hash function
    • 具有双前馈散列函数的加密装置
    • US5606616A
    • 1997-02-25
    • US497880
    • 1995-07-03
    • Eric SprunkPaul MoroneyCandace Anderson
    • Eric SprunkPaul MoroneyCandace Anderson
    • G09C1/00H04L9/06H04L9/18H04L9/00
    • H04L9/0643H04L2209/125
    • Apparatus is provided for authenticating information using a double feedforward hash function to provide complementarity in the implementation of an encryption algorithm. A cryptographic processor has a first input for receiving plaintext, a second input for receiving a key and an output for outputting ciphertext generated by cryptographically processing the plaintext and key. A first circuit element is responsive to the ciphertext and plaintext for outputting a first ciphertext derivative. A second circuit element is responsive to at least a portion of the first ciphertext derivative and the key for outputting a second ciphertext derivative. The first and second circuit elements can be XOR gates. Alternatively, these elements can be provided using lookup tables. Subsequent cryptographic processor stages can be provided having a first input for receiving second plaintext, a second input for receiving the second ciphertext derivative as a key, and an output for outputting second ciphertext generated by cryptographically processing the second plaintext and the second ciphertext derivative. In an illustrated embodiment, the cryptographic processor is a DES processor.
    • 提供了用于使用双前馈散列函数来认证信息的装置,以在实现加密算法中提供互补性。 密码处理器具有用于接收明文的第一输入,用于接收密钥的第二输入和用于输出通过密码处理明文和密钥产生的密文的输出。 第一电路元件响应密文和明文输出第一密文导数。 第二电路元件响应于第一密文导数的至少一部分和用于输出第二密文导数的密钥。 第一和第二电路元件可以是异或门。 或者,可以使用查找表来提供这些元素。 可以提供后续的加密处理器级,其具有用于接收第二明文的第一输入,用于接收第二密文导数作为键的第二输入,以及用于输出通过密码处理第二明文和第二密文导数而生成的第二密文的输出。 在所示实施例中,密码处理器是DES处理器。