Account number checksum check is missing, resulting in returning false positives

[ostrolucky]

SK1211115351562002977968

Here, according to https://www.ibancalculator.com/iban_validieren.html (and failed bank transfer), account number has invalid checksum and is invalid. iban.js though returns true in isValid()

[piotr-dobrogost]

Which checksum do you have in mind?

[ostrolucky]

See referenced validator. I don't know more specifics

[ostrolucky]

https://www.iban.com/iban-validation-help.html says

Account Number checksum (in BBAN)

Every IBAN contains a local bank account number also called BBAN ( Basic Bank Account Number). Some countries use internal check digit algorithms to validate domestic BBAN. Every country uses a different algorithm and in some countries algorithms vary from bank to bank or even individual branches.

For example:

United Kingdom (UK) is using 3 different algorithms: MOD10 , MOD11 and DBLAL with 39 different weights. This makes over 100 different variations.

Currently, a total of 48 countries support BBAN and domestic account number check digit validation.

So far I haven't found these country specific algorithms though :(

[LaurentVB]

Hello @ostrolucky

Thanks for the report. What you're facing is a standard-compliant IBAN generated from a wrong BBAN (according to the Slovakian-specific standard). This library currently does not implement the BBAN validation, it can just generate and/or validate the correct IBAN from the passed BBAN, which can or cannot be valid according to local rules. Sorry for not being able to help you more.

Regards

Laurent

[ostrolucky]

This library currently does not implement the BBAN validatio

Well what I'm asking is to do implement it. Should I raise new issue then?

[LaurentVB]

Oh ok. I think this is currently out of scope of this library and probably not feasible with our limited resources.

Sorry for not being able to help on this.