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    • 7. 发明申请
    • DATA ACCESS AND OWNERSHIP MANAGEMENT
    • 数据访问和所有权管理
    • US20170054721A1
    • 2017-02-23
    • US14832428
    • 2015-08-21
    • ARM IP LimitedARM Limited
    • Milosch MeriacGeraint LuffWilliam Allen CurtisRemy Pottier
    • H04L29/06H04L29/08
    • H04L63/10H04L63/0421H04L67/02H04L67/10H04W12/02
    • In one example, a method includes obtaining, by a data processing device, first secret data associated with a first user and corresponding to a first location of a remote resource. The method further includes generating, using the first secret data, a first uniform resource locator (URL) usable to obtain the first location, and accessing the first location using the first URL. The method further includes obtaining, in response to transfer of usage rights of the data processing device from the first user to a second user, second secret data associated with the second user and corresponding to a second location of the remote resource. The method further includes generating, using the second secret data, a second URL usable to obtain the second location, and accessing the second location using the second URL. The second location is inaccessible via the first URL. The first location is inaccessible via the second URL.
    • 在一个示例中,方法包括由数据处理设备获得与第一用户相关联并对应于远程资源的第一位置的第一秘密数据。 该方法还包括使用第一秘密数据生成可用于获得第一位置的第一统一资源定位符(URL),以及使用第一URL访问第一位置。 该方法还包括响应于数据处理设备从第一用户到第二用户的使用权限的传送而获得与第二用户相关联并对应于远程资源的第二位置的第二秘密数据。 该方法还包括使用第二秘密数据生成可用于获得第二位置的第二URL,以及使用第二URL访问第二位置。 第二个位置无法通过第一个URL访问。 第一个位置无法通过第二个URL访问。
    • 9. 发明申请
    • Ephemeral Broadcast Key Agreement
    • US20210203489A1
    • 2021-07-01
    • US17057373
    • 2019-05-01
    • Arm IP Limited
    • Brendan James MoranMilosch Meriac
    • H04L9/08
    • A method for securely distributing content from a distributor to a plurality of receiving devices, each recipient creating recipient trusted ephemeral public private key pair and making the recipient trusted ephemeral public key available, the method comprising: generating a content encryption key for encrypting content to be distributed and encrypting content using the content encryption key; generating, for each recipient trusted ephemeral public key, a shared secret using the recipient trusted ephemeral public key and the distributor ephemeral private key; generating a plurality of encrypted per-recipient key slots, each encrypted per-recipient key slot generated by encrypting the content encryption key using a different shared secret of the plurality of shared secrets; creating a data structure comprising the distributor ephemeral public key, the encrypted content, and one or more encrypted per-recipient key slots; and transmitting the data structure to deliver the content to recipients associated with the device public keys from which the one or more encrypted per-recipient key slots are derived.