Subsembly SmartCard API 4.5

Subsembly SmartCard API by Subsembly GmbH is a developer-focused software library that streamlines the integration of smart card functionality into applications. It provides a clean, high-level interface for working with smart card readers and cards, abstracting low-level details so you can focus on your business logic. Built around industry standards, it helps you implement secure authentication, digital signatures, e-banking, eID workflows, and other smart card–based use cases with less effort.

Key capabilities include:

• Reader and card management: discover readers, monitor card insertion/removal, and manage shared or exclusive sessions.
• APDU communication: build, send, and parse ISO/IEC 7816 APDUs with robust error handling and timeouts.
• Standards alignment: designed to work with PC/SC-compliant readers and ISO/IEC 7816–based cards, including contact and contactless variants.
• PIN and security features: support for PIN/PUK verification and secure PIN entry via reader keypad when available.
• Cryptography and certificates: access on-card keys, perform cryptographic operations, and handle certificates where supported by the card.
• Developer productivity: clear APIs, utilities for TLV parsing, comprehensive documentation, and example code to accelerate implementation.

With a focus on security, reliability, and ease of use, Subsembly SmartCard API helps teams deliver smart card–enabled solutions faster while maintaining strong security practices. Licensing, maintenance, and technical support are available from Subsembly GmbH.

Subsembly SmartCard API is developed by Subsembly GmbH. The most popular versions of this product among our users are: 3.4 and 4.5. The name of the program executable file is CardTerminalConfigurator.exe.