Can Mozilla provide a list of all PKCS #11 functions that NSS will use?
Your token should expect to implement all the PKCS #11 functions that make since for your token. NSS continues to evolve, and periodically enhances it’s functionality by using a more complete list of PKCS #11 functions. You should have implementations for all the functions specified in the version of the PKCS #11 spec your token implements. If you do not actually do the operation specified by that function, you can return CKR_FUNCTION_NOT_SUPPORTED.