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40 /******* FILE MODIFIED FROM ORIGINAL 2019u1 RELEASE TO AVOID WARNINGS *********/
41 /*
42 //
43 // Purpose:
44 // Cryptography Primitive.
45 // Digesting message according to SHA256
46 //
47 // Contents:
48 // cpSHA256MessageDigest()
49 //
50 */
51
52 #include "owndefs.h"
53 #include "owncp.h"
54 #include "pcphash.h"
55 #include "pcphash_rmf.h"
56 #include "pcptool.h"
57 #include "pcpsha256stuff.h"
58
cpSHA256MessageDigest(DigestSHA256 hash,const Ipp8u * pMsg,int msgLen,const DigestSHA256 IV)59 IppStatus cpSHA256MessageDigest(DigestSHA256 hash, const Ipp8u* pMsg, int msgLen, const DigestSHA256 IV)
60 {
61 /* test digest pointer */
62 IPP_BAD_PTR1_RET(hash);
63 /* test message length */
64 IPP_BADARG_RET((msgLen<0), ippStsLengthErr);
65 /* test message pointer */
66 IPP_BADARG_RET((msgLen && !pMsg), ippStsNullPtrErr);
67
68 {
69 /* select processing function */
70 #if (_SHA_NI_ENABLING_==_FEATURE_ON_)
71 cpHashProc updateFunc = UpdateSHA256ni;
72 #elif (_SHA_NI_ENABLING_==_FEATURE_TICKTOCK_)
73 cpHashProc updateFunc = IsFeatureEnabled(ippCPUID_SHA)? UpdateSHA256ni : UpdateSHA256;
74 #else
75 cpHashProc updateFunc = UpdateSHA256;
76 #endif
77
78 /* message length in the multiple MBS and the rest */
79 int msgLenBlks = msgLen & (-MBS_SHA256);
80 int msgLenRest = msgLen % MBS_SHA256;
81
82 /* init hash */
83 hash[0] = IV[0];
84 hash[1] = IV[1];
85 hash[2] = IV[2];
86 hash[3] = IV[3];
87 hash[4] = IV[4];
88 hash[5] = IV[5];
89 hash[6] = IV[6];
90 hash[7] = IV[7];
91
92 /* process main part of the message */
93 if(msgLenBlks) {
94 updateFunc(hash, pMsg, msgLenBlks, sha256_cnt);
95 pMsg += msgLenBlks;
96 }
97
98 cpFinalizeSHA256(hash, pMsg, msgLenRest, msgLen);
99 hash[0] = ENDIANNESS32(hash[0]);
100 hash[1] = ENDIANNESS32(hash[1]);
101 hash[2] = ENDIANNESS32(hash[2]);
102 hash[3] = ENDIANNESS32(hash[3]);
103 hash[4] = ENDIANNESS32(hash[4]);
104 hash[5] = ENDIANNESS32(hash[5]);
105 hash[6] = ENDIANNESS32(hash[6]);
106 hash[7] = ENDIANNESS32(hash[7]);
107
108 return ippStsNoErr;
109 }
110 }
111