Gck.Builder.set_data

### Method

# Gck Builderset_data

#### Declaration [src]

    void
    gck_builder_set_data (
      GckBuilder* builder,
      gulong attr_type,
      const guchar* value,
      gsize length
    )

#### Description [src]

Set a new attribute to the builder with an arbitrary value. If an attribute with `attr_type` already exists in the builder then it is changed to the new value, otherwise an attribute is added.

The memory in `value` is copied by the builder.

`NULL` may be specified for the `value` argument, in which case an empty attribute is created. `GCK_INVALID` may be specified for the length, in which case an invalid attribute is created in the PKCS#11 style.

#### Parameters

`attr_type` | `gulong`
| The attribute type.
`value` | An array of `guchar`
| The new attribute memory.
| The argument can be `NULL`.
| The length of the array is specified in the `length` argument.
| The data is owned by the caller of the function.
`length` | `gsize`
| The length of the memory.