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USA -

Security algorithm
UN/EDIFACT Syntax Version 4 Segment List

Function:To identify a security algorithm, the technical usage made of it, and to contain the technical parameters required.
This segment also occurs in the following versions of this standard:
40000, 40100

Pos Segment M/C Repeat Repr. Notes
010 S502 SECURITY ALGORITHM M 1
0523 Use of algorithm, coded M an..3
0525 Cryptographic mode of operation, coded C an..3
0533 Mode of operation code list identifier C an..3
0527 Algorithm, coded C an..3
0529 Algorithm code list identifier C an..3
0591 Padding mechanism, coded C an..3
0601 Padding mechanism code list identifier C an..3
020 S503 ALGORITHM PARAMETER C 9
0531 Algorithm parameter qualifier M an..3
0554 Algorithm parameter value M an..512

PosPosition
M/CMandatory or Conditional
Repr.Representation (Data or Content Type)
Notes:
1.S503, provides space for one parameter. The number of repetitions of S503 actually used will depend on the algorithm used. The order of the parameters is arbitrary but, in each case, the actual value is preceded by a coded algorithm parameter qualifier.

Segment USA is used in the following messages:
AUTACKKEYMAN

Change indicators
plus sign An addition.
asterisk Addition/substraction/change to a code entry for a particular data element.
hash or pound sign Changes to names.
vertical bar Changes to text for descriptions, notes and functions.
minus sign A deletion.
letter X Marked for deletion.

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