OSI/MHS Gateway Programmatic Interface (GPI) Reference Manual

Object Classes and Attribute Types

OSI/MHS Gateway Programmatic Interface (GPI) Reference Manual—522223-001

3-5

Message Handling Classes

longer than the specification of the max-string-len parameter of GPI_INITIALIZE_.

Thus, you can use only the procedure calls GPI_OM_READ_ and GPI_OM-

WRITE_ to read and write the values of strings that have the syntax OM-S-

ONFILE-STRING.

Message Handling Classes

This subsection describes objects and attributes of the message handling package. For an

overview of how each class relates to other classes, see Appendix D, Class Hierarchies.

MH-C-ALGORITHM

This class of object identifies a mathematical (usually cryptographic) algorithm. This

object typically identifies an algorithm that was used to encrypt message content and

will be used to decrypt that content.

Table 3-2

describes the attribute types for this class and the syntax, length, and number

of values for each type.

Some attribute types have additional value characteristics, as shown in Table 3-3

Table 3-2. MH-C-ALGORITHM Attributes—General Characteristics

Attribute Type Value Syntax

Value

Length

Number of

Values

MH-T-ALGORITHM-DATUM OM-S-ENCODING-STRING

OM-S-ONFILE-STRING

2-n 0-1

MH-T-ALGORITHM-ID OM-S-OBJECT-ID-STRING 2-n 1

OM-T-CLASS OM-S-OBJECT-ID-STRING 7 1

Table 3-3. MH-C-ALGORITHM Attributes—Additional Characteristics

Attribute Type Value Characteristics

OM-T-CLASS Max. Value Length: ZGPI-EDI-CLASS-OBJ-ID-LEN