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Security policy for device data

A technology of security policy and equipment, applied in secure communication devices, digital data protection, computer security devices, etc., and can solve problems such as loss of important data

Active Publication Date: 2014-10-08
MICROSOFT TECH LICENSING LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only can this lead to the loss of important data, but it can present a rather noticeable inconvenience as a reconfiguration process may be implemented to return the device to a functional state

Method used

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  • Security policy for device data
  • Security policy for device data
  • Security policy for device data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] overview

[0015] Techniques for providing security policies for device data are described. In the implementation, data on the device is stored in encrypted form. To be utilized by the device's functionality (eg, an application), encrypted data is read from storage, decrypted using a decryption key, and provided to the functionality. To protect encrypted data from being decrypted by unauthorized entities, techniques enable the decryption key to be blocked if an attempt to gain unauthorized access to device data is detected. In implementations, the decryption key can be blocked in various ways, such as by deleting the decryption key, overwriting the encryption key in memory, encrypting the encryption key, and the like.

[0016] Embodiments enable occluded decryption keys to be recovered via a recovery experience. For example, the recovery experience can include an authentication process that requests advanced authentication information from the user. Such high-...

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PUM

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Abstract

Techniques for providing security policy for device data are described. In implementations, data on a device is stored in an encrypted form. To protect the encrypted data from being decrypted by an unauthorized entity, techniques enable a decryption key to be occluded if an attempt to gain unauthorized access to device data is detected. In implementations, a decryption key can be occluded in a variety of ways, such as by deleting the decryption key, overwriting the encryption key in memory, encrypting the encryption key, and so on. Embodiments enable an occluded decryption key to be recovered via a recovery experience. For example, a recovery experience can include an authentication procedure that requests a recovery password. If a correct recovery password is provided, the occluded decryption key can be provided.

Description

Background technique [0001] Individuals today have access to a wide variety of devices that can be used to perform a variety of tasks such as work-related tasks, personal activities, recreational activities, and the like. While some devices may be dedicated to a specific purpose, such as work-related purposes, many devices are considered "mixed use" devices. For example, an individual's smartphone can be used to perform personal tasks such as making personal phone calls, taking pictures, sending messages, and the like. Smartphones may also be used for work-related activities such as sending and receiving work-related emails, reading and editing work documents, managing work contacts, and the like. [0002] One consequence of such mixed-use devices is that various types of data can be stored on a particular device. For example, work-related documents may be stored locally on the smartphone to enable the individual to view the documents using the smartphone. While storing dat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/60G06F21/55
CPCG06F21/88G06F21/6218H04L9/0894
Inventor D.M.英加尔斯N.J.伊德C.R.麦考莱O.T.乌雷歇M.J.格拉斯S.维纳亚克P.D.亚当
Owner MICROSOFT TECH LICENSING LLC