revealShare

Reveals the shares to obtain the final calculation result.

int revealShare ( 
	DG_TeeCtx *dgTeeCtx,
        DG_MpcShare *share,
        DG_TeeMpcOutput **output
)

Parameters

**Table 1** Description
Parameter	Description	Value Range	Input/Output
dgTeeCtx	KCAL context	Context initialized in section initTeeCtx.	Input
share	Result of the successful makeShare call. The type is DG_MpcShare. For details, see section 3.2.6.	The value is not null.	Input
output	The type of the final calculation result: DG_TeeOutput	It is null as a single pointer and cannot be null as a double pointer.	Output

Return Values

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

Error Codes

**Table 2** Error codes
Error Code	Value	Description	Remarks
DG_ERR_MPC_TEE_INVALID_PARAM	4501	Failed to verify the parameters.	dgTeeCtx is null. share is null. The share size is 0. The output double pointer is null.
DG_ERR_MPC_NET_SEND_FAIL	4012	Failed to send network request.	-
DG_ERR_MPC_RECV_DATA_FAIL	4015	Failed to receive serialized data.	-

Dependency

This function depends on dgTeeCtx initialized in section initTeeCtx.
#include "data_guard_mpc.h": required header file

Example

#include  "data_guard_mpc.h" 
// The output is not null.
DG_MpcShare *share_out = nullptr;
 res = aritOpts.revealShare(dgTee, share_out, &output);

Calculation result: res = 0.

When retrieving results from the output, you need to access appropriate data within its data field based on the type specified in DG_MpcDataType. If the type is MPC_INT, retrieve the u64Numbers-type output. If the type is MPC_DOUBLE, retrieve the doubleNumbers-type output. If the type is MPC_STRING, retrieve strings-type output.

Parent topic: Arithmetic Operators