PKCS#11: integrating applications with cryptographic tokens

PKCS#11 is an interface for applications to use cryptographic tokens, including HSMs and secure elements. Applications load a provider module to find keys and request operations such as signing or encryption.

An integration review includes:

• The provider module being loaded.
• Session management and authentication.
• Key attributes that restrict use or export.
• Error handling when the token is unavailable or a session fails.

The guide introduces the API and complements the HSM overview.