Class CKAttribute

  • All Implemented Interfaces:
    java.lang.AutoCloseable
    Direct Known Subclasses:
    CKAClass, CKAKeyType, CKAUsage, CKAValueLen

    public abstract class CKAttribute
    extends NativeEnclosure
    A CKAttribute is an instance of PKCS#11 CK_ATTRIBUTE. Each CK_ATTRIBUTE contains three parts: 1. A type (type), 2. A pointer to a value (pValue), 3. The size of said value (ulValueLen). In the Java layer, CKAttribute has a member "type" to contain the type of the CK_ATTRIBUTE. It takes on values from PKCS11Constants (pkcs11t.h and pkcs11n.h) with prefix "CKA_". The two NativeEnclosure fields, mPointer and mPointerSize wrap a pointer to the underlying CK_ATTRIBUTE and its size respectively. They get allocated when open() is called, and freed when close() is called. The value (numbers 2 and 3 above) get determined by the extending type, and its corresponding native methods. Some use statically allocated values, like CKAUsage's classes. Others are dynamically allocated pointers, such as when referring to CK_ULONG values (as with CKAValueLen for instance).
    • Field Detail

      • type

        public long type
    • Constructor Detail

      • CKAttribute

        public CKAttribute​(long type)