The Luhn algorithm or Luhn formula, also known as the "modulus 10" or "mod 10" algorithm, named after its creator, IBM scientist Hans Peter Luhn, is a simple checksum formula used to validate a variety of identification numbers.
JSLuhn proved to be useful in a development scenario where it was necessary to validate the 9-digit Canadian Business Number during the business registration process. It does the follow:
- Validate a number to see if it is valid according to the luhn algorithm
- Calculate luhn check digits for a given number
- Generate random luhn numbers of any size
validate('32552371')
The Calculate function returns the the luhnNumber (input number + check digit)
calculate('32552371')
The Generate function returns a random luhn number of a provided size.
generate(9)