1 /*******************************************************************************
2 * Copyright 2002-2018 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 // Digesting message according to SHA256
46 //
47 // Contents:
48 // cpFinalizeSHA256()
49 //
50 //
51 */
52
53 #include "owndefs.h"
54 #include "owncp.h"
55 #include "pcphash.h"
56 #include "pcphash_rmf.h"
57 #include "pcptool.h"
58 #include "pcpsha256stuff.h"
59
cpFinalizeSHA256(DigestSHA256 pHash,const Ipp8u * inpBuffer,int inpLen,Ipp64u processedMsgLen)60 void cpFinalizeSHA256(DigestSHA256 pHash, const Ipp8u* inpBuffer, int inpLen, Ipp64u processedMsgLen)
61 {
62 /* select processing function */
63 #if (_SHA_NI_ENABLING_==_FEATURE_ON_)
64 cpHashProc updateFunc = UpdateSHA256ni;
65 #elif (_SHA_NI_ENABLING_==_FEATURE_TICKTOCK_)
66 cpHashProc updateFunc = IsFeatureEnabled(ippCPUID_SHA)? UpdateSHA256ni : UpdateSHA256;
67 #else
68 cpHashProc updateFunc = UpdateSHA256;
69 #endif
70
71 /* local buffer and it length */
72 Ipp8u buffer[MBS_SHA256*2];
73 int bufferLen = inpLen < (MBS_SHA256-(int)MLR_SHA256)? MBS_SHA256 : MBS_SHA256*2;
74
75 /* copy rest of message into internal buffer */
76 CopyBlock(inpBuffer, buffer, inpLen);
77
78 /* padd message */
79 buffer[inpLen++] = 0x80;
80 PaddBlock(0, buffer+inpLen, bufferLen-inpLen-MLR_SHA256);
81
82 /* put processed message length in bits */
83 processedMsgLen = ENDIANNESS64(processedMsgLen<<3);
84 ((Ipp64u*)(buffer+bufferLen))[-1] = processedMsgLen;
85
86 /* copmplete hash computation */
87 updateFunc(pHash, buffer, bufferLen, sha256_cnt);
88 }