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diff --git a/ext/ipp/sources/ippcp/pcpgfpxmethod_com_mul.c b/ext/ipp/sources/ippcp/pcpgfpxmethod_com_mul.c
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+++ b/ext/ipp/sources/ippcp/pcpgfpxmethod_com_mul.c
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+/*******************************************************************************
+* Copyright 2018 Intel Corporation
+* All Rights Reserved.
+*
+* If this  software was obtained  under the  Intel Simplified  Software License,
+* the following terms apply:
+*
+* The source code,  information  and material  ("Material") contained  herein is
+* owned by Intel Corporation or its  suppliers or licensors,  and  title to such
+* Material remains with Intel  Corporation or its  suppliers or  licensors.  The
+* Material  contains  proprietary  information  of  Intel or  its suppliers  and
+* licensors.  The Material is protected by  worldwide copyright  laws and treaty
+* provisions.  No part  of  the  Material   may  be  used,  copied,  reproduced,
+* modified, published,  uploaded, posted, transmitted,  distributed or disclosed
+* in any way without Intel's prior express written permission.  No license under
+* any patent,  copyright or other  intellectual property rights  in the Material
+* is granted to  or  conferred  upon  you,  either   expressly,  by implication,
+* inducement,  estoppel  or  otherwise.  Any  license   under such  intellectual
+* property rights must be express and approved by Intel in writing.
+*
+* Unless otherwise agreed by Intel in writing,  you may not remove or alter this
+* notice or  any  other  notice   embedded  in  Materials  by  Intel  or Intel's
+* suppliers or licensors in any way.
+*
+*
+* If this  software  was obtained  under the  Apache License,  Version  2.0 (the
+* "License"), the following terms apply:
+*
+* 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.
+*******************************************************************************/
+
+/*
+//     Intel(R) Integrated Performance Primitives. Cryptography Primitives.
+//     GF(p^d) methods
+//
+*/
+#include "owncp.h"
+
+#include "pcpgfpxstuff.h"
+#include "pcpgfpxmethod_com.h"
+
+//tbcd: temporary excluded: #include <assert.h>
+
+BNU_CHUNK_T* cpGFpxMul_com(BNU_CHUNK_T* pR, const BNU_CHUNK_T* pA, const BNU_CHUNK_T* pB, gsEngine* pGFEx)
+{
+   int extDegree = GFP_EXTDEGREE(pGFEx);
+
+    BNU_CHUNK_T* pGFpolynomial = GFP_MODULUS(pGFEx);
+    int degR = extDegree-1;
+    int elemLen= GFP_FELEN(pGFEx);
+
+    int degB = degR;
+    BNU_CHUNK_T* pTmpProduct = cpGFpGetPool(2, pGFEx);
+    BNU_CHUNK_T* pTmpResult = pTmpProduct + GFP_PELEN(pGFEx);
+
+    gsEngine* pGroundGFE = GFP_PARENT(pGFEx);
+    BNU_CHUNK_T* r = cpGFpGetPool(1, pGroundGFE);
+    int groundElemLen = GFP_FELEN(pGroundGFE);
+
+    const BNU_CHUNK_T* pTmpB = GFPX_IDX_ELEMENT(pB, degB, groundElemLen);
+
+    //tbcd: temporary excluded: assert(NULL!=pTmpProduct && NULL!=r);
+
+    /* clear temporary */
+    cpGFpElementPadd(pTmpProduct, elemLen, 0);
+
+    /* R = A * B[degB-1] */
+    cpGFpxMul_GFE(pTmpResult, pA, pTmpB, pGFEx);
+
+    for(degB-=1; degB>=0; degB--) {
+      /* save R[degR-1] */
+      cpGFpElementCopy(r, GFPX_IDX_ELEMENT(pTmpResult, degR, groundElemLen), groundElemLen);
+
+      { /* R = R * x */
+         int j;
+         for (j=degR; j>=1; j--)
+            cpGFpElementCopy(GFPX_IDX_ELEMENT(pTmpResult, j, groundElemLen), GFPX_IDX_ELEMENT(pTmpResult, j-1, groundElemLen), groundElemLen);
+         cpGFpElementPadd(pTmpResult, groundElemLen, 0);
+      }
+
+      cpGFpxMul_GFE(pTmpProduct, pGFpolynomial, r, pGFEx);
+      GFP_METHOD(pGFEx)->sub(pTmpResult, pTmpResult, pTmpProduct, pGFEx);
+
+      /* B[degB-i] */
+      pTmpB -= groundElemLen;
+      cpGFpxMul_GFE(pTmpProduct, pA, pTmpB, pGFEx);
+      GFP_METHOD(pGFEx)->add(pTmpResult, pTmpResult, pTmpProduct, pGFEx);
+   }
+
+   /* copy result */
+   cpGFpElementCopy(pR, pTmpResult, elemLen);
+
+   /* release pools */
+   cpGFpReleasePool(1, pGroundGFE);
+   cpGFpReleasePool(2, pGFEx);
+
+   return pR;
+}