|  | 1 | 
            
              | Security Timestamp |  
              | Security timestamp of the secured message. |  | 
        
          |  | 2 | 
            
              | Certificate generation date and time |  
              | Identifies the date and time of generation of the certificate by the Certification Authority. |  | 
        
          |  | 3 | 
            
              | Certificate start of validity period |  
              | Identifies the date and time from which the certificate must be considered valid. |  | 
        
          |  | 4 | 
            
              | Certificate end of validity period |  
              | Identifies the date and time until which the certificate must be considered valid. |  | 
        
          |  | 5 | 
            
              | EDIFACT structure generation date and time |  
              | Date and time of generation of the secured EDIFACT structure. |  | 
        
          |  | 6 | 
            
              | Certificate revocation date and time |  
              | Identifies the date and time of revocation of the certificate by the Certification Authority. |  | 
        
          |  | 7 | 
            
              | Key generation date and time |  
              | Identifies the date and time of generation of the key(s). |  |