Details about Registry Key Security on Windows® 7
What is the importance of Registry Key Security on Windows 7?
Windows 7 is the latest Operating System from Microsoft and it is used on personal computers, including home and business desktops, laptops, netbooks and tablet PCs. Windows 7 has got many extra new features when compared to other Operating Systems and improvements in performance are also provided by using this Operating System. In Windows, the registry keys are used to store configuration information. Every time a program is installed or when its configuration settings have been modified, then the value of a relevant key is changed. The presence of many malicious programs like viruses, spyware, malware etc changes the key values, or creates new ones in order to ensure that their code runs automatically.
The following points are about Registry Key Security on a Windows 7 system:
- Registry Key Security
- Access right
- Types of access right
Registry Key Security
The accesses to registry keys are controlled with the permission of a Windows security model. By using RegCreateKeyEx or RegSetKeySecurity, you can get a security descriptor for a registry key. The key gets a default security descriptor by specifying NULL. The ACLs present in a default security descriptor for a key will be inherited from its direct parent key. To get the security descriptor of a registry key, you need to use RegGetKeySecurity, GetNamedSecurityInfo, or GetSecurityInfo function.
An access right is a bit flag and it is related to a particular set of operations that a thread can have on a securable object. For example, when a registry key has the KEY_SET_VALUE access right, it can be related to the ability of a thread to set a value under the key. The system will not carry out the operation if a thread that does not have the necessary access right to the object tries to perform an operation on an object.
An access mask is a 32-bit value, and it bits are related to access rights that are supported by an object. Access mask format are being used by all Windows securable objects that includes bits for certain types of access rights: they are, Generic access rights, Standard access rights, SACL access right, Directory services access rights. When a thread tries to open a handle to an object, the thread typically specifies an access mask to request a set of access rights.
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