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CCA Release 2.54
Note: To avoid errors when using the IBM 3624 PIN-block format, you should
not include in the decimalization table a decimal digit that is also used as a pad
digit. For information about a pad digit, see “PIN Profile” on page 8-10.
validation_data
The second element in the data array for a PIN-calculation method supplies 1
to 16 characters of account data, which can be the customer’s account number
or other identifying number. If necessary, the application program must
left-justify the validation data and pad on the right with space characters to a
length of 16 bytes. While normally the validation data consists of
numeric-decimal characters, the Clear_PIN_Generate_Alternate,
Encrypted_PIN_Generate, and Encrypted_PIN_Verify verbs have been updated
to support any hexadecimal character (0, ..., 9, A, ..., F) in support of industry
practice.
clear_PIN, offset_data, or reserved
The third element in the data array contains an O-PIN value. If an O-PIN is not
used in the verb or method, then this should be 16 space characters.
Data Array with the VISA-PVV Calculation Method: When using the VISA-PVV
calculation method, the data array consists of the transaction_security_parameter,
the PVV, and one reserved element.
transaction_security_parameter
The first element in the data array for the VISA-PVV calculation method points
to transaction security data. Specify 16 characters that include the following:
– Eleven (rightmost) digits of personal account number (PAN) data, excluding
the check digit. For information about a PAN, see “Personal Account
Number (PAN)” on page 8-13.
– One digit of key index valued from one to six.
– Four space characters.
referenced PVV
When using the Encrypted_PIN_Verify verb, the second element in the data
array for the VISA-PVV calculation method contains four numeric characters,
which are the PVV value for the account and derived from a customer-selected
PIN value. This value is followed by 12 space characters.
reserved
The second element (when not using the Encrypted_PIN_Verify verb) and the
third element in the data array for the VISA-PVV calculation method are
reserved. These elements point to 16-byte variables in application storage.
The information in these elements will be ignored, but the elements must be
declared.
Data Array for the Interbank Calculation Method: When using the Interbank
PIN-calculation method with certain verbs, the data array consists of one element,
the transaction_security_parameter, for transaction security data. The other two
elements are reserved.
transaction_security_parameter
The first element in the data array for the Interbank calculation method points
to transaction security data. Specify 16 numeric characters that include the
following:
Chapter 8. Financial Services Support Verbs 8-9