### The sec_attr_t Data Type

The sec_attr_t data type is used in the calls that create and update attribute instances. The data type consists of a value of type uuid_t that identifies the attribute to be accessed by UUID and data type of sec_attr_value_t. The sec_attr_value_t data type is a tagged union of the actual value assigned (or to be assigned to the attribute instance) and a data type of sec_attr_encoding_t that specifies the encoding tags that define the attribute type characteristics. The following figure illustrates the structure of a sec_attr_t data type.

The sec_attr_t Data Type

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