Populating the HVE:

Preliminaries

Populate the HVE sector one at a time.

Use data to populate the HVE according to the specified format.

Each sector is expecting a certain type of query, this type must be matched when populating the HVE.


For GenToken: You do not have to populate all sectors of your HVE_t, only the ones that you would like to query. For example, there may be one sector in your HVE_t with a query that you do not care to check. By leaving the sector unpopulated, it acts as a wild card, and any value in the HVE_t sector in encrypt is acceptable.


Populate a Comparison Query Sector: declare a variable of type HVE_COMPARISON_t as follows:

HVE_COMPARISON_t comp = { size_t value, int sector};


int HVE_Insert_Comparison(HVE_t *HVE, HVE_COMPARISON_t *comp);

• value is the number to be used in the comparison.
• sector specifies the sector number of the HVE to be populated with value.

Populate an Equality Query sector: declare a variable of type HVE_EQUALITY_t as follows:

HVE_EQUALITY_t eq = {char *text, int text_len , int sector};


int HVE_Insert_Equality(HVE_t *HVE, HVE_EQUALITY *eq);

• text is the actual character string to be used in the equality query.
• text_len is the length of the character string.
• sector specifies the sector number of the HVE to be populated with text.

Populate a Subset Query sector: follow the below steps:

1. Specify the values to be used in the query by declaring an array of type HVE_SUBSET_DATA_t. Each HVE_SUBSET_DATA_t entry consists of a character string and its length. The array must be terminated with an HVE_SUBSET_DATA_t equal to {END, END}. This last entry must be taken into the length of the array.

   HVE_SUBSET_DATA_t data[num_elem_in_subset]= {
           {"str1", str1_len}, 
   	{"str2", str2_len}, 
   	..        ...,
   	{END, END}  
   };

2. Second specify which sector in the HVE this data is populating by declaring a variable of type HVE_SUBSET_t and using the above HVE_SUBSET_DATA_t to initialize it as follows:

   HVE_SUBSET_t sub = { data, num_elem_in_sub, sector};
   int HVE_Insert_Subset(HVE_t *HVE, HVE_SUBSET_t *sub);
   

Populate a Raw Query sector: declare a variable of type HVE_RAW_t as follows:

HVE_RAW_t raw = {int value, int sector};


int HVE_Insert_Raw(HVE_t *HVE, HVE_Equality *eq);

• value is the actual number to be used in the raw query.
• sector specifies the sector number of the HVE to be populated with the raw value.