psec package provides tools for protecting sensitive data and cardholder authentication in retail payment transactions.

Installation

psec is published on PyPI and can be installed from there:

pip install psec

Modules

• tr31 - TR-31 key block wrapping and unwrapping
• cvv - Card Verification Value generation
• des - Triple DES utilities (a wrapper over cryptography)
• aes - AES utilities (a wrapper over cryptography)
• mac - Message Authentication Code generation
• pin - Personal Identification Number generation
• pinblock - PIN Blocks encoding and decoding

Contributors

• Konstantin Novichikhin
  • Author
• David Schmid
  • PIN block ISO 4 support