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| |
| /* |
| // |
| // Purpose: |
| // Cryptography Primitive. |
| // SHA512 message digest |
| // |
| // Contents: |
| // ippsSHA512GetTag() |
| // |
| */ |
| |
| #include "owndefs.h" |
| #include "owncp.h" |
| #include "pcphash.h" |
| #include "pcphash_rmf.h" |
| #include "pcptool.h" |
| #include "pcpsha512stuff.h" |
| |
| /*F* |
| // Name: ippsSHA512GetTag |
| // |
| // Purpose: Compute digest based on current state. |
| // Note, that futher digest update is possible |
| // |
| // Returns: Reason: |
| // ippStsNullPtrErr pTag == NULL |
| // pState == NULL |
| // ippStsContextMatchErr pState->idCtx != idCtxSHA512 |
| // ippStsLengthErr max_SHA_digestLen < tagLen <1 |
| // ippStsNoErr no errors |
| // |
| // Parameters: |
| // pTag address of the output digest |
| // tagLen length of digest |
| // pState pointer to the SHA512 state |
| // |
| *F*/ |
| IPPFUN(IppStatus, ippsSHA512GetTag,(Ipp8u* pTag, Ipp32u tagLen, const IppsSHA512State* pState)) |
| { |
| /* test state pointer and ID */ |
| IPP_BAD_PTR1_RET(pState); |
| pState = (IppsSHA512State*)( IPP_ALIGNED_PTR(pState, SHA512_ALIGNMENT) ); |
| IPP_BADARG_RET(idCtxSHA512 !=HASH_CTX_ID(pState), ippStsContextMatchErr); |
| |
| /* test digest pointer */ |
| IPP_BAD_PTR1_RET(pTag); |
| IPP_BADARG_RET((tagLen<1)||(sizeof(DigestSHA512)<tagLen), ippStsLengthErr); |
| |
| { |
| DigestSHA512 digest; |
| CopyBlock(HASH_VALUE(pState), digest, sizeof(DigestSHA512)); |
| cpFinalizeSHA512(digest, |
| HASH_BUFF(pState), HAHS_BUFFIDX(pState), |
| HASH_LENLO(pState), HASH_LENHI(pState)); |
| digest[0] = ENDIANNESS64(digest[0]); |
| digest[1] = ENDIANNESS64(digest[1]); |
| digest[2] = ENDIANNESS64(digest[2]); |
| digest[3] = ENDIANNESS64(digest[3]); |
| digest[4] = ENDIANNESS64(digest[4]); |
| digest[5] = ENDIANNESS64(digest[5]); |
| digest[6] = ENDIANNESS64(digest[6]); |
| digest[7] = ENDIANNESS64(digest[7]); |
| CopyBlock(digest, pTag, tagLen); |
| |
| return ippStsNoErr; |
| } |
| } |