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    • 10. 发明授权
    • Multiple authority key derivation
    • 多权限密钥导出
    • US08892865B1
    • 2014-11-18
    • US13431760
    • 2012-03-27
    • Gregory B. RothMarc R. BarbourBradley Jeffery BehmCristian M. IlacEric Jason Brandwine
    • Gregory B. RothMarc R. BarbourBradley Jeffery BehmCristian M. IlacEric Jason Brandwine
    • H04L9/32H04L9/00G06F21/60
    • H04L9/0822G06F21/602H04L9/0836H04L9/14H04L63/064H04L2209/24
    • Systems and methods for authentication generate keys from secret credentials shared between authenticating parties and authenticators. Generation of the keys may involve utilizing specialized information in the form of parameters that are used to specialize keys. Keys and/or information derived from keys held by multiple authorities may be used to generate other keys such that signatures requiring such keys and/or information can be verified without access to the keys. Keys may also be derived to form a hierarchy of keys that are distributed such that a key holder's ability to decrypt data depends on the key's position in the hierarchy relative to the position of a key used to encrypt the data. Key hierarchies may also be used to distribute key sets to content processing devices to enable the devices to decrypt content such that sources or potential sources of unauthorized content are identifiable from the decrypted content.
    • 用于认证的系统和方法从认证方和认证者之间共享的秘密凭证生成密钥。 密钥的生成可以涉及利用用于专门化密钥的参数形式的专门信息。 可以使用由多个机构保存的密钥导出的密钥和/或信息来生成其他密钥,使得可以在不访问密钥的情况下验证需要这样的密钥和/或信息的签名。 还可以导出密钥以形成分布的密钥的层次结构,使得密钥持有者解密数据的能力取决于密钥在层级中相对于用于加密数据的密钥的位置的位置。 密钥层次也可以用于将密钥集分配给内容处理设备,以使得设备能够解密内容,使得未经授权的内容的源或潜在来源可以从解密的内容中识别。