Handling Special Numeric Credit Card Data

The Handling Special Numeric Data process involves gathering a set of special numeric data and representing it in a different format.

The Format Preserving Encryption (FPE) for Credit Card Number (CCN) is handled by configuring numeric data type as the plaintext alphabet. The following default settings for CCN are applicable:

  • Credit Card Number (CCN) data type does not support delimiters.
  • Short Data Encryption is not supported by CCN. The CCN supports a minimum input length of 8 bytes.

For more information about Invalid Card Type (ICT), Invalid Luhn, and Alphabet Indicator validation for CCN, refer to Credit Card.


Last modified : August 21, 2025