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PKCS11 Configuration Reference

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Bryan Hunt edited this page Sep 22, 2021 · 6 revisions

When building the PKCS11 library several configuration options are available in pkcs11_config.h

  • PKCS11_DEBUG_ENABLE (Default: disabled)

    Enabling debug statements to be logged (on most platforms this will be stderr)

  • PKCS11_USE_STATIC_MEMORY (Default: enabled)

    If set uses static library context and object stores.

  • PKCS11_USE_STATIC_CONFIG (Default: disabled)

    If set uses a static configuration defined in pks11_config.c where all objects are defined in code rather than configuration files. Enable for embedded applications without filesystems.

  • PKCS11_MAX_SLOTS_ALLOWED (Default: 1)

    The number of PKCS11 slots (which are different than device slots) the library will support. Currently cryptoauthlib (via atcab_init) only supports one device context at a time.

  • PKCS11_MAX_SESSIONS_ALLOWED (Default: 10)

    The maximum number of PKCS11 sessions allowed. Memory will be allocated upon library init for these sessions (especially if PKCS11_USE_STATIC_MEMORY is set so this should be configured to account for the use case. Embedded applications should reduce this value to the minimum required by the application.

  • PKCS11_MAX_OBJECTS_ALLOWED (Default: 16)

    The maximum number of PKCS11 objects to be supported by the library.

  • PKCS11_MAX_LABEL_SIZE (Default: 10)

    The maximum number of characters allowed in an object label. Suitable for embedded applications.

  • PKCS11_EXTERNAL_FUNCTION_LIST (Default: disabled)

    An optimization for embedded applications to allow for externally defined functions lists. This will allow compilers to prune pkcs11 APIs that are unused by the embedded application.

  • PKCS11_SEARCH_CACHE_SIZE (Default: 128)

    This configures the memory allocated for caching the attribute search structure that is provided to the library when an application is performing an object find api call.

Cryptoauthentication Device Library
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