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7-8
Chapter 7: 5945 Operation and Security Key Loading
NCR 4430 Emulation Function Code 30h
Loads the encrypted WK without parity checking.
Note:
A valid Key Exchange Key must already be loaded into the 5945
for the selected Key ID in order to load the Working Key.
The 5945 verifies the following function code message information or
returns an error code.
•
Message length is correct
•
1-byte key ID is a number from 01h to 0Ah, inclusive
•
KEK is loaded
After verification the 5945 decrypts the 8-byte encrypted WK with the
KEK specified by the key ID number. The 5944 ignores the 1-byte
instruction code.
Message Formats
Function Code 30
[ VLI ][ B0h ][ 1-byte key ID ][ 04h ]
[ 8-byte encrypted WK ][ 1-byte instruction code ][BCC]
Response E9h
[ VLI ][ E9h ][BCC] if successful; else [ VLI ][ F8h ][BCC]
Содержание 5945
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