kulcs(In IP security (IPSec), a value used in combination with an algorithm to encrypt or decrypt data. Key settings for IPSec are configurable to provide greater security); beállításkulcs(In Registry Editor, a folder that appears in the left pane of the Registry Editor window. A key can contain subkeys and entries. For example, Environment is a key of HKEY_CURRENT_USER); billentyű(In database management, an identifier for a record or group of records in a datafile)