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40 
41 /*
42 //
43 //  Purpose:
44 //     Cryptography Primitive.
45 //     SHA512 message digest
46 //
47 //  Contents:
48 //        ippsSHA512Final()
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 "pcpsha512stuff.h"
58 
59 /*F*
60 //    Name: ippsSHA512Final
61 //
62 // Purpose: Stop message digesting and return digest.
63 //
64 // Returns:                Reason:
65 //    ippStsNullPtrErr        pMD == NULL
66 //                            pState == NULL
67 //    ippStsContextMatchErr   pState->idCtx != idCtxSHA512
68 //    ippStsNoErr             no errors
69 //
70 // Parameters:
71 //    pMD         address of the output digest
72 //    pState      pointer to the SHA512 state
73 //
74 *F*/
75 IPPFUN(IppStatus, ippsSHA512Final,(Ipp8u* pMD, IppsSHA512State* pState))
76 {
77    /* test state pointer and ID */
78    IPP_BAD_PTR1_RET(pState);
79    pState = (IppsSHA512State*)( IPP_ALIGNED_PTR(pState, SHA512_ALIGNMENT) );
80    IPP_BADARG_RET(idCtxSHA512 !=HASH_CTX_ID(pState), ippStsContextMatchErr);
81 
82    /* test digest pointer */
83    IPP_BAD_PTR1_RET(pMD);
84 
85    cpFinalizeSHA512(HASH_VALUE(pState),
86                     HASH_BUFF(pState), HAHS_BUFFIDX(pState),
87                     HASH_LENLO(pState), HASH_LENHI(pState));
88    /* convert hash into big endian */
89    ((Ipp64u*)pMD)[0] = ENDIANNESS64(HASH_VALUE(pState)[0]);
90    ((Ipp64u*)pMD)[1] = ENDIANNESS64(HASH_VALUE(pState)[1]);
91    ((Ipp64u*)pMD)[2] = ENDIANNESS64(HASH_VALUE(pState)[2]);
92    ((Ipp64u*)pMD)[3] = ENDIANNESS64(HASH_VALUE(pState)[3]);
93    ((Ipp64u*)pMD)[4] = ENDIANNESS64(HASH_VALUE(pState)[4]);
94    ((Ipp64u*)pMD)[5] = ENDIANNESS64(HASH_VALUE(pState)[5]);
95    ((Ipp64u*)pMD)[6] = ENDIANNESS64(HASH_VALUE(pState)[6]);
96    ((Ipp64u*)pMD)[7] = ENDIANNESS64(HASH_VALUE(pState)[7]);
97 
98    /* re-init hash value */
99    HAHS_BUFFIDX(pState) = 0;
100    HASH_LENLO(pState) = 0;
101    HASH_LENHI(pState) = 0;
102    sha512_hashInit(HASH_VALUE(pState));
103 
104    return ippStsNoErr;
105 }
106