paysec

paysec is a Rust library designed to provide standards related to payment security in retail payment transactions, making it a tool for financial institutions and payment service providers who require compliance with this standard.

The initial release focuses on implementing the ISO 9564 format 4 standard for PIN block encryption and decryption, more standards are planned to be released here.

Features

• ISO 9564 Format 4 PIN Block: Encode and encipher PIN blocks using the ISO 9564 format 4 standard. This includes functionalities for:
  • Encoding a Personal Identification Number (PIN) into a PIN block.
  • Encoding a Primary Account Number (PAN) for secure PIN block generation.
  • Enciphering and deciphering PIN blocks with AES encryption, binding the PIN with the PAN for improved security.

Future Developments

paysec is actively being developed with plans to include more payment security features such as:

• Additional PIN block formats and encryption standards.
• Integration with popular payment gateways and protocols.
• Keyblock protection with formats such as TR-31 and TR-34

License

paysec is licensed under the GNU General Public License Version 3 (GPLv3), a widely-used free software license that ensures users have the freedom to run, study, share, and modify the software.

The GPLv3 is a copyleft license, which means that any derivative work you create from paysec must also be distributed under the same license terms.

For more details, see the LICENSE file included with the source code or visit the GNU General Public License Version 3, 29 June 2007 page.