Home | History | Annotate | Download | only in ippcp 
      1 /*******************************************************************************
      2 * Copyright 2013-2018 Intel Corporation
      3 * All Rights Reserved.
      4 *
      5 * If this  software was obtained  under the  Intel Simplified  Software License,
      6 * the following terms apply:
      7 *
      8 * The source code,  information  and material  ("Material") contained  herein is
      9 * owned by Intel Corporation or its  suppliers or licensors,  and  title to such
     10 * Material remains with Intel  Corporation or its  suppliers or  licensors.  The
     11 * Material  contains  proprietary  information  of  Intel or  its suppliers  and
     12 * licensors.  The Material is protected by  worldwide copyright  laws and treaty
     13 * provisions.  No part  of  the  Material   may  be  used,  copied,  reproduced,
     14 * modified, published,  uploaded, posted, transmitted,  distributed or disclosed
     15 * in any way without Intel's prior express written permission.  No license under
     16 * any patent,  copyright or other  intellectual property rights  in the Material
     17 * is granted to  or  conferred  upon  you,  either   expressly,  by implication,
     18 * inducement,  estoppel  or  otherwise.  Any  license   under such  intellectual
     19 * property rights must be express and approved by Intel in writing.
     20 *
     21 * Unless otherwise agreed by Intel in writing,  you may not remove or alter this
     22 * notice or  any  other  notice   embedded  in  Materials  by  Intel  or Intel's
     23 * suppliers or licensors in any way.
     24 *
     25 *
     26 * If this  software  was obtained  under the  Apache License,  Version  2.0 (the
     27 * "License"), the following terms apply:
     28 *
     29 * You may  not use this  file except  in compliance  with  the License.  You may
     30 * obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
     31 *
     32 *
     33 * Unless  required  by   applicable  law  or  agreed  to  in  writing,  software
     34 * distributed under the License  is distributed  on an  "AS IS"  BASIS,  WITHOUT
     35 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     36 *
     37 * See the   License  for the   specific  language   governing   permissions  and
     38 * limitations under the License.
     39 *******************************************************************************/
     40 
     41 /*
     42 //
     43 //  Purpose:
     44 //     Cryptography Primitive.
     45 //     EC over Prime Finite Field (Sign, SM2 version)
     46 //
     47 //  Contents:
     48 //     ippsECCPSignSM2()
     49 //
     50 //
     51 */
     52 
     53 #include "owndefs.h"
     54 #include "owncp.h"
     55 #include "pcpeccp.h"
     56 
     57 
     58 /*F*
     59 //    Name: ippsECCPSignSM2
     60 //
     61 // Purpose: Signing of message representative.
     62 //          (SM2 version).
     63 //
     64 // Returns:                   Reason:
     65 //    ippStsNullPtrErr           NULL == pEC
     66 //                               NULL == pMsgDigest
     67 //                               NULL == pRegPrivate
     68 //                               NULL == pEphPrivate
     69 //                               NULL == pSignR
     70 //                               NULL == pSignS
     71 //
     72 //    ippStsContextMatchErr      illegal pEC->idCtx
     73 //                               illegal pMsgDigest->idCtx
     74 //                               illegal pRegPrivate->idCtx
     75 //                               illegal pEphPrivate->idCtx
     76 //                               illegal pSignR->idCtx
     77 //                               illegal pSignS->idCtx
     78 //
     79 //    ippStsIvalidPrivateKey     (1 + regPrivate) >= order
     80 //
     81 //    ippStsMessageErr           MsgDigest >= order
     82 //                               MsgDigest <  0
     83 //
     84 //    ippStsRangeErr             not enough room for:
     85 //                               signR
     86 //                               signS
     87 //
     88 //    ippStsEphemeralKeyErr      (signR + ephPrivate) == order
     89 //                               (0==signR) || (0==signS)
     90 //
     91 //    ippStsNoErr                no errors
     92 //
     93 // Parameters:
     94 //    pMsgDigest     pointer to the message representative to be signed
     95 //    pRegPrivate    pointer to the regular private key
     96 //    pEphPrivate    pointer to the ephemeral private key
     97 //    pSignR,pSignS  pointer to the signature
     98 //    pEC           pointer to the ECCP context
     99 //
    100 // Note:
    101 //    ephemeral key computes inside ippsECCPSignSM2 in contrast with ippsECCPSignDSA,
    102 //    where ephemeral key pair computed before call and setup in context
    103 //
    104 *F*/
    105 IPPFUN(IppStatus, ippsECCPSignSM2,(const IppsBigNumState* pMsgDigest,
    106                                    const IppsBigNumState* pRegPrivate,
    107                                    const IppsBigNumState* pEphPrivate,
    108                                    IppsBigNumState* pSignR, IppsBigNumState* pSignS,
    109                                    IppsECCPState* pEC))
    110 {
    111    /* use aligned EC context */
    112    IPP_BAD_PTR1_RET(pEC);
    113    pEC = (IppsGFpECState*)( IPP_ALIGNED_PTR(pEC, ECGFP_ALIGNMENT) );
    114    IPP_BADARG_RET(!ECP_TEST_ID(pEC), ippStsContextMatchErr);
    115 
    116    return ippsGFpECSignSM2(pMsgDigest,
    117                            pRegPrivate, pEphPrivate,
    118                            pSignR, pSignS,
    119                            pEC, (Ipp8u*)ECP_SBUFFER(pEC));
    120 }
    121