Returns the unique identifier of the opaque type to which a key object belongs.
- iOS 2.0+
- macOS 10.3+
- tvOS 9.0+
- watchOS 2.0+
- Mac Catalyst 13.0+Beta
A value that identifies the opaque type of a
This function returns a value that uniquely identifies the opaque type of a
SecKey object. You can compare this value to the
CFTypeID identifier obtained by calling the
CFGetTypeID(_:) function on a specific object. These values might change from release to release or platform to platform.
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