| #### Constants The following constants are used in sec_pk calls: The following unsigned 32-bit constants, which are used with the sec_pk_usage_flags_t data type, correspond to KeyUsage types defined in DAM (Dec 1995) to X.509 (1993): sec_pk_usage_digitalSignature sec_pk_usage_nonRepudiation sec_pk_usage_dataEncipherment sec_pk_usage_keyEncipherment sec_pk_usage_keyCertSign sec_pk_usage_offLineCRLSign ####