IBM Computer Hardware 2 User Manual download pdf (Page 469)

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CCA Release 2.54

PIN-Block Formats

The PIN verbs support one or more of the following PIN-block formats:

 IBM 3624 format

 ISO-0 format (same as the ANSI X9.8, VISA-1, and ECI formats).

 ISO-1 format (same as the ECI-4 format)

 ISO-2 format

3624 PIN-Block Format

The 3624 PIN-block format supports a PIN from 1 to 16 digits in length. A PIN that

is longer than 16 digits is truncated on the right.

The following is the 3624 PIN-block format:

1 2 3 4 5 6 7 8 9 1 11 12 13 14 15 16

┌───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┐

│ P │P/X│P/X│P/X│P/X│P/X│P/X│P/X│P/X│P/X│P/X│P/X│P/X│P/X│P/X│P/X│

└───┴───┴───┴───┴───┴───┴───┴───┴───┴───┴───┴───┴───┴───┴───┴───┘

Figure E-2. 3624 PIN-Block Format

where:

P Is a PIN digit, which is a 4-bit value from X'0' to X'9'. The values of

the PIN digits are independent.

P/X Is a PIN digit or a pad value. A PIN digit has a 4-bit value from

X'0' to X'9'. A pad value has a 4-bit value from X'0' to X'F' and

must be different from any PIN digit. The number of pad values for this

format is in the range from 0 to 15, and all the pad values must have

the same value.

Example:

PIN = 123456, Pad = X'E'.

PIN block = X'123456EEEEEEEEE'.

Appendix E. Financial System Verbs Calculation Methods and Data Formats E-9

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