KtoBlzCheck

KtoBLZCheck is a specialized, open-source library and command-line tool designed to validate German bank account numbers (Ktonto) and bank codes (BLZ – Bankleitzahl) based on official data from the Deutsche Bundesbank. It is highly useful for developers or applications needing to verify that a bank code exists and that an account number conforms to the check digit rules for that specific bank. Key Features of KtoBLZCheck

Validation: Checks if a pair of account numbers and bank codes (BLZ) is valid, ensuring they conform to specific bank regulations.

Bank Information: Maps bank codes (BLZ) to the clear-text name and location of the bank.

Up-to-Date Data: Uses data files that are regularly updated to reflect changes provided by the Deutsche Bundesbank.

Command-line & Library: Includes both a command-line interface for quick checks and a library (libktoblzcheck) for integration into other applications.

Bindings: Provides Python bindings (via ctypes) for developers. How to Use KtoBLZCheck Installation:

It is available on many Linux distributions (e.g., ALT Linux, Cygwin).

You can clone the source from SourceForge using git clone https://git.code.sf.net/p/ktoblzcheck/code ktoblzcheck.

Compilation requires cmake and a C++ compiler (gcc, clang, etc.). Command-line Usage:

You can use it to verify data by entering a bank code and account number directly into the terminal tool. Integrating the Library:

Applications can link against libktoblzcheck to validate user inputs in real-time.

The project, which is often used to map bank codes to locations, is sometimes maintained in community repositories, such as those listed in the Cygwin Package Summary. If you’d like, I can: Tell you how to install it on a specific operating system. Show you example command-line usage. Provide info on updating the bank data files. Let me know how you’d like to proceed. Cygwin Package Summary for ktoblzcheck