| Cryptographic Token Interface Standard | 
 PKCS#11  | 
The following table defines the attributes common to all objects:
Table 15, Common Object Attributes
| Attribute | Data Type | Meaning | 
| CKA_CLASS1 | CK_OBJECT_CLASS | Object class (type) | 
1Must be specified when object is created
Cryptoki Version 2.11 supports the following values for CKA_CLASS (i.e., the following classes (types) of objects): CKO_HW_FEATURE, CKO_DATA, CKO_CERTIFICATE, CKO_PUBLIC_KEY, CKO_PRIVATE_KEY, CKO_SECRET_KEY, and CKO_DOMAIN_PARAMETERS.