Change your secret keys every few months to minimize damage in case of a leak.
The purpose of the Luhn algorithm is not to secure the data against malicious intent, but to protect against accidental errors. When a user types a card number, the system performs this check to ensure the number is mathematically valid before attempting to process a transaction.
Change your secret keys every few months to minimize damage in case of a leak.
The purpose of the Luhn algorithm is not to secure the data against malicious intent, but to protect against accidental errors. When a user types a card number, the system performs this check to ensure the number is mathematically valid before attempting to process a transaction.