| Work item: | X.1254 rev | 
                                
                                    | Subject/title: | Entity authentication assurance framework | 
                                
                                    | Status: | Under study [Issued from previous study period] | 
                                
                                    | Approval process: | TAP | 
                                
                                    | Type of work item: | Recommendation | 
                                
                                    | Version: | Rev. | 
                                
                                    | Equivalent number: | - | 
                                
                                    | Timing: | 2026-06 (No priority specified) | 
                                
                                    | Liaison: | FIDO Alliance, NIST, ISO/IEC JTC1 SC 27 WG 5 | 
                                
                                    | Supporting members: | United States, Aetna, NEC, Soonchunhyang University | 
                                
                                    | Summary: | Recommendation ITU-T X.1254 specifies three entity authentication assurance levels (AALs), and criteria for and threats to each of them.
Additionally, it:
•	establishes a framework for managing AALs;
•	provides guidance concerning control technologies that are to be used to mitigate authentication threats, based on a risk assessment;
•	provides guidance for mapping the three AALs to other authentication assurance schemas; and
•	provides guidance for exchanging the results of authentication that are based on the three AALs. | 
                                
                                    | Comment: | - | 
                                
                                    | Reference(s): |  | 
                                     | Historic references: | 
                                    | Contact(s): |  | 
                                
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                                            | ITU-T A.5 justification(s): |  
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                                    | First registration in the WP:
                                        2024-03-12 15:34:03 | 
                                
                                    | Last update:
                                        2025-04-17 16:01:02 |