| UNH |
- |
M |
1 |
- |
Message header |
|
This segment is used to head, identify and specify a message. |
|
| |
| SG4 |
- |
C |
99 |
- |
USL-SG5 |
|
A group of segments containing lists of certificates or public keys. The group shall be used to group together certificates of similar status - i.e., which are still valid, or which may be invalid for some reason. |
|
| |
| USL |
- |
M |
1 |
- |
Security list status |
|
A segment identifying valid, revoked, unknown or discontinued items. These items may be certificates (e.g., valid, revoked) or public keys (e.g., valid or discontinued). |
|
| |
| SG5 |
- |
M |
9999 |
- |
USC-USA |
|
A group of segments containing the data necessary to validate the security methods applied to the message/package, when asymmetric algorithms are used (as defined in Part 5 of ISO 9735). This group shall be used in the delivery of lists of keys or certificates of similar status. |
|
| |
| USC |
- |
M |
1 |
- |
Certificate |
|
This segment either contains information regarding the certificate, and identifies the certification authority which has generated the certificate, or is used to identify bilaterally interchanged signature keys. |
|
| |
| USA |
- |
C |
3 |
- |
Security algorithm |
|
This segment is used to identify a security algorithm, the technical usage made of it, and contains the technical parameters required in order to generate the digital signature. |
|
| |
| UNT |
- |
M |
1 |
- |
Message trailer |
|
A service segment ending a message, giving the total number of segments and the control reference number of the message. |
|
| |
