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Service segment specifications  USA   EDIFACT  Syntax Version 4

USA

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

Pos		Tag	Name	S	R	Repr		Notes
010		S502	SECURITY ALGORITHM Identification of a security algorithm.	M	1
		0523	Use of algorithm, coded Specification of the usage made of the algorithm.	M	1	an..3
		0525	Cryptographic mode of operation, coded Specification of the mode of operation used for the algorithm.	C	1	an..3
		0533	Mode of operation code list identifier Specification of the code list used to identify the cryptographic mode of operation.	C	1	an..3
		0527	Algorithm, coded Identification of the algorithm.	C	1	an..3
		0529	Algorithm code list identifier Specification of the code list used to identify the algorithm.	C	1	an..3
		0591	Padding mechanism, coded Padding mechanism or padding scheme applied.	C	1	an..3
		0601	Padding mechanism code list identifier Specification of the code list used to identify the padding mechanism or padding scheme.	C	1	an..3
020		S503	ALGORITHM PARAMETER Parameter required by a security algorithm.	C	9			1
		0531	Algorithm parameter qualifier Specification of the type of parameter value.	M	1	an..3
		0554	Algorithm parameter value Value of a parameter required by the algorithm.	M	1	an..512

Date  2002-05-23