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    • 8. 发明授权
    • Conditional key generation based on expiration date of data
    • 基于数据到期日的条件密钥生成
    • US08948381B2
    • 2015-02-03
    • US13228786
    • 2011-09-09
    • Zhexuan Song
    • Zhexuan Song
    • H04L29/06H04L9/08
    • H04L9/088
    • In one embodiment, receive a first request in connection with accessing a set of encrypted data, wherein the set of encrypted data has an expiration date; the first request comprises a first key associated with the expiration date; and the set of encrypted data has been encrypted using the first key. Validate the first key by comparing the expiration date against a current time. Generate a second key for decrypting the set of encrypted data using the first key only if the expiration date has not passed.
    • 在一个实施例中,接收与访问一组加密数据有关的第一请求,其中所述一组加密数据具有到期日期; 所述第一请求包括与所述到期日期相关联的第一密钥; 并且该加密数据集已经使用第一密钥加密。 通过将有效期与当前时间进行比较来验证第一个密钥。 只有在到期日期尚未通过时,才能使用第一个密钥生成用于解密加密数据集的第二个密钥。
    • 9. 发明授权
    • Method and apparatus for sharing documents
    • 共享文件的方法和装置
    • US08533469B2
    • 2013-09-10
    • US12623861
    • 2009-11-23
    • Zhexuan SongRyusuke MasuokaJesus Molina
    • Zhexuan SongRyusuke MasuokaJesus Molina
    • H04L29/00
    • G06F21/6218G06F2221/2107
    • A method for securely sharing electronic documents on a document storage system. The method includes receiving an electronic document from a creating user, generating an encryption key unique to the electronic document, encrypting the electronic document using the encryption key to create an encrypted electronic document, and communicating the encrypted electronic document to a document repository for storage/ The method also includes identifying a resource locator for uniquely identifying the storage location of the encrypted electronic document and communicating the encryption key and the resource locator to the creating user. The method also includes receiving the encryption key and the resource locator from a requesting user, retrieving the encrypted electronic document from the document repository using the resource locator, decrypting the encrypted electronic document using the encryption key, and communicating the decrypted electronic document to the requesting user.
    • 一种用于在文件存储系统上安全地共享电子文档的方法。 该方法包括从创建用户接收电子文档,生成电子文档特有的加密密钥,使用加密密钥加密电子文档以创建加密的电子文档,以及将加密的电子文档传送到文档储存库,用于存储/ 该方法还包括识别用于唯一地识别加密电子文档的存储位置并将加密密钥和资源定位符传送给创建用户的资源定位符。 该方法还包括从请求用户接收加密密钥和资源定位符,使用资源定位器从文档库中检索加密的电子文档,使用加密密钥解密加密的电子文档,并将解密的电子文档传送到请求 用户。
    • 10. 发明授权
    • Measure energy consumption and determine energy-consumption patterns for electricity-consuming devices
    • 测量能耗并确定耗电设备的能耗模式
    • US08396686B2
    • 2013-03-12
    • US13085803
    • 2011-04-13
    • Zhexuan SongIndradeep Ghosh
    • Zhexuan SongIndradeep Ghosh
    • G06F1/26
    • G06Q10/06G01D4/002Y02B70/3266Y02B90/241Y02P90/82Y04S20/242Y04S20/32
    • In one embodiment, one or more electronic devices access energy-consumption data at each of a plurality of electricity-consuming devices, the energy-consumption data at each of the electricity-consuming devices indicating for each of a plurality of past pre-determined time periods an aggregate energy usage by the electricity-consuming device over the past pre-determined time period, an energy-measurement unit at the electricity-consuming device having measured and recorded the aggregate energy usage by the electricity-consuming device for each of the past pre-determined time periods for later access, each of the energy-measurement units having a substantially unique identifier (ID), each of the electricity-consuming devices having its own one of the energy-measurement units; and based on the energy-consumption data, determine one or more energy-consumption patterns across the electricity-consuming devices over at least the past pre-determined time periods.
    • 在一个实施例中,一个或多个电子设备在多个耗电设备中的每一个处访问能耗数据,每个耗电设备的能量消耗数据针对多个过去的预定时间 在耗电装置的能量测量单元测量和记录耗电设备的每一个过去的总能量使用量的时间段期间耗电装置在过去预定时间段内的总能量消耗 用于稍后进入的预定时间段,每个能量测量单元具有基本唯一的标识符(ID),每个耗电设备具有其自己的一个能量测量单元; 并且基于能量消耗数据,至少在过去的预定时间段内确定穿过耗电装置的一个或多个能量消耗模式。