A key whose value indicates the item's application label.
- iOS 2.0+
- macOS 10.6+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
The corresponding value is of type
CFString and contains a label for this item. This attribute is different from the
k attribute, which is intended to be human-readable. Instead, this attribute is used to look up a key programmatically; in particular, for keys of class
k, the value of this attribute is the hash of the public key.