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/*############################################################################
# Copyright 1999-2018 Intel Corporation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
############################################################################*/
/*
//
// Purpose:
// Cryptography Primitive.
// EC over Prime Finite Field (EC Key Generation)
//
// Contents:
// ippsECCPSetKeyPair()
//
//
*/
#include "owndefs.h"
#include "owncp.h"
#include "pcpeccp.h"
/*F*
// Name: ippsECCPSetKeyPair
//
// Purpose: Generate (private,public) Key Pair
//
// Returns: Reason:
// ippStsNullPtrErr NULL == pECC
// NULL == pPrivate
// NULL == pPublic
//
// ippStsContextMatchErr illegal pECC->idCtx
// illegal pPrivate->idCtx
// illegal pPublic->idCtx
//
// ippStsNoErr no errors
//
// Parameters:
// pPrivate pointer to the private key
// pPublic pointer to the public key
// regular flag regular/ephemeral keys
// pECC pointer to the ECCP context
//
*F*/
IPPFUN(IppStatus, ippsECCPSetKeyPair, (const IppsBigNumState* pPrivate, const IppsECCPPointState* pPublic,
IppBool regular,
IppsECCPState* pEC))
{
/* use aligned EC context */
IPP_BAD_PTR1_RET(pEC);
pEC = (IppsGFpECState*)( IPP_ALIGNED_PTR(pEC, ECGFP_ALIGNMENT) );
IPP_BADARG_RET(!ECP_TEST_ID(pEC), ippStsContextMatchErr);
{
BNU_CHUNK_T* targetPrivate;
BNU_CHUNK_T* targetPublic;
if(regular) {
targetPrivate = ECP_PRIVAT(pEC);
targetPublic = ECP_PUBLIC(pEC);
}
else {
targetPrivate = ECP_PRIVAT_E(pEC);
targetPublic = ECP_PUBLIC_E(pEC);
}
/* set up private key request */
if( pPrivate ) {
pPrivate = (IppsBigNumState*)( IPP_ALIGNED_PTR(pPrivate, ALIGN_VAL) );
IPP_BADARG_RET(!BN_VALID_ID(pPrivate), ippStsContextMatchErr);
{
int privateLen = BITS_BNU_CHUNK(ECP_ORDBITSIZE(pEC));
cpGFpElementCopyPadd(targetPrivate, privateLen, BN_NUMBER(pPrivate), BN_SIZE(pPrivate));
}
}
/* set up public key request */
if( pPublic ) {
IPP_BADARG_RET( !ECP_POINT_TEST_ID(pPublic), ippStsContextMatchErr );
{
BNU_CHUNK_T* targetPublicX = targetPublic;
BNU_CHUNK_T* targetPublicY = targetPublic+ECP_POINT_FELEN(pPublic);
gfec_GetPoint(targetPublicX, targetPublicY, pPublic, pEC);
gfec_SetPoint(targetPublic, targetPublicX, targetPublicY, pEC);
//cpGFpElementCopy(targetPublic, ECP_POINT_DATA(pPublic), publicLen);
}
}
return ippStsNoErr;
}
}
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