setTeeNodeInfos

Sets the global node information. For two-party computation, only nodes 0 and 1 are supported.

int setTeeNodeInfos ( 
     DG_TeeCtx *dgTeeCtx, 
     struct TeeNodeInfos *teeNodeInfos
    )

Parameters

**Table 1** Description
Parameter	Description	Value Range	Input/Output
dgTeeCtx	KCAL context	Context initialized in section initTeeCtx.	Input
teeNodeInfos	Global node information	The value is not null.	Input

**Table 2** TeeNodeInfo structure
Member	Type	Description
nodeId	int	Compute nodes 0 and 1

**Table 3** TeeNodeInfos structure
Member	Type	Description
nodeInfo	TeeNodeInfo *	Information about multiple nodes.
size	unsigned long	Node count: Only two nodes are supported.

Return Values

Success: 0 is returned.
Failure: The error code is returned.

Error Codes

**Table 4** Error codes
Error Code	Value	Description	Remarks
DG_ERR_MPC_TEE_INVALID_PARAM	4501	Failed to verify the parameters.	dgTeeCtx or teeNodeInfos is null.
DG_ERR_MPC_TEE_INVALID_NODE_INFO	4503	Invalid node information.	The setting of the network parameters or the number of global nodes is incorrect.
DG_ERR_MPC_TEE_NODE_NOT_SORT_AND_START_0	4505	The node IDs are not numbered from 0.	The node IDs must be numbered from 0 and increment sequentially.

Dependency

pirOpts depends on the successful initialization in section DG_InitPirOpts of the function group for the PIR operator.
#include "data_guard_mpc.h": required header file

Example

#include  "data_guard_mpc.h" 
   
      struct TeeNodeInfo teeNodes[2];
    teeNodes[0].nodeId = 0;
    teeNodes[1].nodeId = 1;
    struct TeeNodeInfos allNodes;
    allNodes.nodeInfo = teeNodes;
    allNodes.size = 2;
    rv = pirOpts.setTeeNodeInfos(dgTee, &allNodes);
    if (rv != 0) {
        printf("tee set node info error.-%d\n", rv);
        return rv;
    } Note: The node ID is set to 2.

Running result: rv is 0.

Call the setTeeNodeInfos API using the pirOpts output of the successful DG_InitPirOpts call.

Parent topic: PIR Operator