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40 
41 /*
42 //
43 //  Purpose:
44 //     Cryptography Primitive.
45 //     Digesting message according to SHA1
46 //
47 //  Contents:
48 //        ippsSHA1MessageDigest()
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 "pcpsha1stuff.h"
58 
59 /*F*
60 //    Name: ippsSHA1MessageDigest
61 //
62 // Purpose: Digest of the whole message.
63 //
64 // Returns:                Reason:
65 //    ippStsNullPtrErr        pMsg == NULL
66 //                            pMD == NULL
67 //    ippStsLengthErr         len <0
68 //    ippStsNoErr             no errors
69 //
70 // Parameters:
71 //    pMsg        pointer to the input message
72 //    len         input message length
73 //    pMD         address of the output digest
74 //
75 *F*/
76 IPPFUN(IppStatus, ippsSHA1MessageDigest,(const Ipp8u* pMsg, int len, Ipp8u* pMD))
77 {
78    /* test digest pointer */
79    IPP_BAD_PTR1_RET(pMD);
80    /* test message length */
81    IPP_BADARG_RET((len<0), ippStsLengthErr);
82    /* test message pointer */
83    IPP_BADARG_RET((len && !pMsg), ippStsNullPtrErr);
84 
85    {
86       /* select processing function */
87       #if (_SHA_NI_ENABLING_==_FEATURE_ON_)
88       cpHashProc updateFunc = UpdateSHA1ni;
89       #elif (_SHA_NI_ENABLING_==_FEATURE_TICKTOCK_)
90       cpHashProc updateFunc = IsFeatureEnabled(ippCPUID_SHA)? UpdateSHA1ni : UpdateSHA1;
91       #else
92       cpHashProc updateFunc = UpdateSHA1;
93       #endif
94 
95       /* message length in the multiple MBS and the rest */
96       int msgLenBlks = len & (-MBS_SHA1);
97       int msgLenRest = len - msgLenBlks;
98 
99       /* init hash */
100       ((Ipp32u*)(pMD))[0] = sha1_iv[0];
101       ((Ipp32u*)(pMD))[1] = sha1_iv[1];
102       ((Ipp32u*)(pMD))[2] = sha1_iv[2];
103       ((Ipp32u*)(pMD))[3] = sha1_iv[3];
104       ((Ipp32u*)(pMD))[4] = sha1_iv[4];
105 
106       /* process main part of the message */
107       if(msgLenBlks) {
108          updateFunc((Ipp32u*)pMD, pMsg, msgLenBlks, sha1_cnt);
109          pMsg += msgLenBlks;
110       }
111 
112       cpFinalizeSHA1((Ipp32u*)pMD, pMsg, msgLenRest, len);
113       ((Ipp32u*)pMD)[0] = ENDIANNESS32(((Ipp32u*)pMD)[0]);
114       ((Ipp32u*)pMD)[1] = ENDIANNESS32(((Ipp32u*)pMD)[1]);
115       ((Ipp32u*)pMD)[2] = ENDIANNESS32(((Ipp32u*)pMD)[2]);
116       ((Ipp32u*)pMD)[3] = ENDIANNESS32(((Ipp32u*)pMD)[3]);
117       ((Ipp32u*)pMD)[4] = ENDIANNESS32(((Ipp32u*)pMD)[4]);
118 
119       return ippStsNoErr;
120    }
121 }
122