Service Group Application Reference

Service Group Application Reference

Parameters

Parameters

The Word-key service type is called
SSAPHO
. An application calls a service of type
SSAPHO
with the following parameters:
No.
Name
Size (bytes)
Filled in by
1
Service name
8
Application
2
Response code
2
SSAPHO
3
Function
1
Application
4
Word
24
Application
5
Word-key
3/6
SSAPHO
6
Work-area
90,000 (minimum)
SSAPHO
SERVICE-NAME (8/32 bytes)
The name of the Service for the SSAPHO service type as it has been defined in the Algorithm Definition.
RESPONSE-CODE (2 bytes)
This parameter is filled in by the Service to indicate the success or otherwise of the Call, a value of
00
indicates that all was well, any other value flags a warning or an error. An extended response code is also returned in the Work Area, described below. For a description on how to check Response Codes, refer to the
How an Application Should Test the Response Code
section.
FUNCTION (1 byte)
At present only function ’1’ is supported.
WORD (24 bytes)
The word to be used for key generation, left justified and space padded to 24 bytes.
WORD-KEY (3 bytes)
The three-byte (six bytes for the
SSAPHOC
Service) key.
Whenever a key cannot be built a special ’bad key’ with the value of 800000hex is returned.
WORK-AREA (30,000 bytes)
A pointer to a general purpose Work-area.

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