Module validation 

Validation functions for PII patterns.

These functions provide additional validation beyond regex matching to reduce false positives. For example, credit card numbers must pass the Luhn checksum, and IBANs have country-specific formats.

Functions

validate_credit_card

Validate credit card number using Luhn algorithm.

validate_entity

Validate a detected entity value based on its type.

validate_iban

Validate IBAN format and checksum.

validate_ip_address

Validate IPv4 address octets are in valid range.

validate_isbn

Validate ISBN-10 or ISBN-13 checksum.

validate_uk_nhs

Validate UK NHS Number using mod-11 checksum.

validate_uk_nino

Validate UK National Insurance Number format.

validate_us_ssn

Validate US Social Security Number format.