AUTACK Secure authentication and acknowledgement

Syntax Development Group (SDG)

AUTACK is a message authenticating sent, or providing secure acknowledgement of received interchanges, groups, messages or packages.

A secure authentication and acknowledgement message can be used to:

a) give secure authentication, integrity or non-repudiation of origin to messages, packages, groups or interchanges.

b) give secure acknowledgement or non-repudiation of receipt to secured messages, packages, groups or interchanges.

Header

1. 0010 · UNH · Message header · Max 1 · Mandatory

   To head, identify and specify a message.

   1. Data element S009/0057 is retained for upward compatibility. The use of
   S016 and/or S017 is encouraged in preference.
   2. The combination of the values carried in data elements 0062 and S009 shall
   be used to identify uniquely the message within its group (if used) or if
   not used, within its interchange, for the purpose of acknowledgement.

2. Segment group 1 Repeat 99

   1. 0030 · USH · Security header · Max 1 · Mandatory

      To specify a security mechanism applied to a EDIFACT structure (i.e.: either message/package, group or interchange).

   2. 0040 · USA · Security algorithm · Max 3 · Conditional

      To identify a security algorithm, the technical usage made of it, and to contain the technical parameters required.

   3. Segment group 2 Repeat 2

      1. 0060 · USC · Certificate · Max 1 · Mandatory

         To convey the public key and the credentials of its owner.

      2. 0070 · USA · Security algorithm · Max 3 · Conditional

         To identify a security algorithm, the technical usage made of it, and to contain the technical parameters required.

      3. 0080 · USR · Security result · Max 1 · Conditional

         To contain the result of the security mechanisms.

         1. S508, two occurrences shall be used in the case of signature algorithms
         requiring two parameters to express the result.
         In the case of an RSA signature, only one occurrence of S508 shall be
         used.
         In the case of a DSA signature two occurrences of S508 shall be used.

3. 0090 · USB · Secured data identification · Max 1 · Mandatory

   To contain details related to the AUTACK.

4. Segment group 3 Repeat 9999

   1. 0110 · USX · Security references · Max 1 · Mandatory

      To refer to the secured EDIFACT structure and its associated date and time.

      1. D5(050, 040) If first, then all
      2. D1(070, 090) One and only one
      3. D5(060, 040) If first, then all
      4. D5(080, 070) If first, then all

   2. 0120 · USY · Security on references · Max 9 · Mandatory

      To identify the applicable header, and to contain the security result and/or to indicate the possible cause of security rejection for the referred value.

5. Segment group 4 Repeat 99

   1. 0140 · UST · Security trailer · Max 1 · Mandatory

      To establish a link between security header and security trailer segment groups.

      1. 0534, the value shall be identical to the value in 0534 in the
      corresponding USH segment.

   2. 0150 · USR · Security result · Max 1 · Conditional

      To contain the result of the security mechanisms.

      1. S508, two occurrences shall be used in the case of signature algorithms
      requiring two parameters to express the result.
      In the case of an RSA signature, only one occurrence of S508 shall be
      used.
      In the case of a DSA signature two occurrences of S508 shall be used.

6. 0160 · UNT · Message trailer · Max 1 · Mandatory

   To end and check the completeness of a message.