PyEMV

PyEMV package provides methods to generate

• Application Cryptograms (TC, ARQC, or AAC) that's used to verify ICC.
• Authorization Response Cryptogram (ARPC) that's used to verify card issuer.
• Secure Messaging Integrity and Confidentiality that's used by the issuer to update values on the ICC.
• Dynamic Card Verification Values.

Installation

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

pip install pyemv

Modules

• kd - Key Derivation support for ICC master keys and session keys.
• ac - Application Cryptogram support for ARQC, AAC, TC, and ARPC.
• sm - Secure Messaging support for script command integrity and confidentiality.
• cvn - Putting it all together for various Cryptogram Version Numbers.
• cvv - Support for dynamic card verification, such as CVC3.
• tlv - TLV encoder and decoder.