A distributed database service capable of storing information, such as certificates and CRLs, in various nodes or servers distributed across a network. (In the context of this practice guide, a directory services stores identity information and enables the authentication and identification of people and machines.)
						                            Source(s):
						                            
								                            
                                                                
                                                                    NIST SP 1800-16B
                                                                
                                                                										                             under Directory Service 
                                                                                                                                    from
                                                                            NIST SP 800-15                                                                
									                            
                                                                
                                                                    NIST SP 1800-16D
                                                                
                                                                										                             under Directory Service 
                                                                                                                                    from
                                                                            NIST SP 800-15                                                                
									                            
						                            
						                            
						                        
					                            
						                              A distributed database service capable of storing information, such as certificates and CRLs, in various nodes or servers distributed across a network. (In the context of this practice guide, a directory services stores identity information and enables the authentication and identification of people and machines.)
						                            Source(s):
						                            
								                            
                                                                
                                                                    NIST SP 1800-16C
                                                                
                                                                										                             under Directory Service 
                                                                                                                                    from
                                                                            NIST SP 800-15