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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.

SECURITY ALGORITHM

Identification of a security algorithm.

Dependency Notes:
1. D5(030,020) If first, then all
2. D5(050,040) If first, then all
3. D5(020,040) If first, then all
4. D5(070,060) If first, then all
5. D5(060,040) If first, then all

Notes:
6. 0533, a mode of operation shall be chosen in relation to the chosen algorithm (data element 0527). Some combinations of mode of operation and algorithm are not appropriate.

Use of algorithm, coded

Specification of the usage made of the algorithm.

Cryptographic mode of operation, coded

Specification of the mode of operation used for the algorithm.

Mode of operation code list identifier

Specification of the code list used to identify the cryptographic mode of operation.

Algorithm, coded

Identification of the algorithm.

Algorithm code list identifier

Specification of the code list used to identify the algorithm.

Padding mechanism, coded

Padding mechanism or padding scheme applied.

Padding mechanism code list identifier

Specification of the code list used to identify the padding mechanism or padding scheme.

ALGORITHM PARAMETER

Parameter required by a security algorithm.

Algorithm parameter qualifier

Specification of the type of parameter value.

0554

Algorithm parameter value

Value of a parameter required by the algorithm.

Notes:
1. If necessary, this value shall be filtered by an appropriate filter function. Note that key names do not need to be filtered.