# SCDynamicStoreKey ## Overview The `SCDynamicStoreKey` programming interface provides convenience functions that an application can use to create a correctly formatted dynamic store key for accessing specific items in the dynamic store. An application can then use the resulting string in any function that requires a dynamic store key. ## Topics ### Group [`CFStringRefSCDynamicStoreKeyCreate(CFAllocatorRef allocator, CFStringRef fmt, ...);`](/documentation/SystemConfiguration/SCDynamicStoreKeyCreate) Creates a dynamic store key using the specified format. [`func SCDynamicStoreKeyCreateNetworkGlobalEntity(CFAllocator?, CFString, CFString) -> CFString`](/documentation/SystemConfiguration/SCDynamicStoreKeyCreateNetworkGlobalEntity(_:_:_:)) Creates a dynamic store key that can be used to access a specific global (as opposed to a per-service or per-interface) network configuration entity. [`func SCDynamicStoreKeyCreateNetworkInterface(CFAllocator?, CFString) -> CFString`](/documentation/SystemConfiguration/SCDynamicStoreKeyCreateNetworkInterface(_:_:)) Creates a dynamic store key that can be used to access the network interface configuration information in the dynamic store. [`func SCDynamicStoreKeyCreateNetworkInterfaceEntity(CFAllocator?, CFString, CFString, CFString?) -> CFString`](/documentation/SystemConfiguration/SCDynamicStoreKeyCreateNetworkInterfaceEntity(_:_:_:_:)) Creates a dynamic store key that can be used to access the per-interface network configuration information in the dynamic store. [`func SCDynamicStoreKeyCreateNetworkServiceEntity(CFAllocator?, CFString, CFString, CFString?) -> CFString`](/documentation/SystemConfiguration/SCDynamicStoreKeyCreateNetworkServiceEntity(_:_:_:_:)) Creates a dynamic store key that can be used to access the per-service network configuration information. [`func SCDynamicStoreKeyCreateComputerName(CFAllocator?) -> CFString`](/documentation/SystemConfiguration/SCDynamicStoreKeyCreateComputerName(_:)) Creates a key that can be used to receive notifications when the current computer name changes. [`func SCDynamicStoreKeyCreateConsoleUser(CFAllocator?) -> CFString`](/documentation/SystemConfiguration/SCDynamicStoreKeyCreateConsoleUser(_:)) Creates a key that can be used to receive notifications when the current console user changes. [`func SCDynamicStoreKeyCreateHostNames(CFAllocator?) -> CFString`](/documentation/SystemConfiguration/SCDynamicStoreKeyCreateHostNames(_:)) Creates a key that can be used to receive notifications when the `HostNames` entity changes. [`func SCDynamicStoreKeyCreateLocation(CFAllocator?) -> CFString`](/documentation/SystemConfiguration/SCDynamicStoreKeyCreateLocation(_:)) Creates a key that can be used to receive notifications when the location identifier changes. [`func SCDynamicStoreKeyCreateProxies(CFAllocator?) -> CFString`](/documentation/SystemConfiguration/SCDynamicStoreKeyCreateProxies(_:)) Creates a key that can be used to receive notifications when the current network proxy settings are changed. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)