Encrypted PIN Verify verb

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This verb extracts the customer-entered PIN from the input PIN block.

It extracts the PIN according to the following rules:
  • If the input PIN block format is ANSI X9.8, ISO format 0, VISA format 1, VISA format 4, ECI format 1, ISO format 1, ISO format 2, ISO format 3, ISO format 4, VISA format 2, IBM® Encrypting PINPAD format, or ECI format 3, the verb extracts the PIN according to the length specified in the PIN block.
  • If the input PIN block format is VISA format 3, the specified delimiter (padding) determines the PIN length. The search starts at the leftmost digit in the PIN block. If the input PIN block format is 3624, the specification of a PIN extraction method for the 3624 is supported through rule_array keywords. If no PIN extraction method is specified in the rule_array, the specified delimiter (padding) determines the PIN length.
  • If the input PIN block format is 3621, the specification of a PIN extraction method for the 3621 is supported through rule_array keywords. If no PIN extraction method is specified in the rule_array, the specified delimiter (padding) determines the PIN length.
  • If the input PIN block format is ECI format 2, the PIN is the leftmost 4 digits.

For the VISA algorithm, if the extracted PIN length is less than 4, the verb sets a reason code that indicates verification failed. If the length is greater than or equal to 4, the verb uses the leftmost 4 digits as the referenced PIN.

For the IBM German Banking Pool algorithm, if the extracted PIN length is not 4, the verb sets a reason code that indicates verification failed.

For the IBM 3624 algorithm, if the extracted PIN length is less than the PIN check length, the verb sets a reason code that indicates verification failed.