Here is a list of all files with brief descriptions:

CryptnoxWallet.cpp	Implementation of the high-level CryptnoxWallet API
CryptnoxWallet.h	High-level API for interacting with a Cryptnox Hardware Wallet over NFC
CW_CryptoProvider.h	Abstract cryptographic primitives interface
CW_Defs.h	Shared constants, error codes, and session state for the SDK
CW_Logger.h	Abstract logging interface
CW_NfcTransport.h	Abstract NFC transport interface
CW_Platform.h	Abstract platform interface for timing primitives
CW_SecureChannel.cpp	Implementation of the Cryptnox secure channel protocol
CW_SecureChannel.h	Cryptnox secure channel protocol over NFC
CW_TrustedKeys.h	Cryptnox CA public keys used for offline certificate verification
CW_Utils.cpp	Implementation of the platform-independent utility helpers
CW_Utils.h	Platform-independent security and memory utilities
platform_compat.h	Arduino compatibility shims for non-Arduino (plain C++) builds