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| |
| /* |
| // |
| // Purpose: |
| // Cryptography Primitive. |
| // Digesting message according to SHA256 |
| // |
| // Contents: |
| // ippsSHA224GetTag() |
| // |
| */ |
| |
| #include "owndefs.h" |
| #include "owncp.h" |
| #include "pcphash.h" |
| #include "pcphash_rmf.h" |
| #include "pcptool.h" |
| #include "pcpsha256stuff.h" |
| |
| /*F* |
| // Name: ippsSHA224GetTag |
| // |
| // Purpose: Compute digest based on current state. |
| // Note, that futher digest update is possible |
| // |
| // Returns: Reason: |
| // ippStsNullPtrErr pTag == NULL |
| // pState == NULL |
| // ippStsContextMatchErr pState->idCtx != idCtxSHA256 |
| // ippStsLengthErr max_SHA_digestLen < tagLen <1 |
| // ippStsNoErr no errors |
| // |
| // Parameters: |
| // pTag address of the output digest |
| // tagLen length of digest |
| // pState pointer to the SHA224 state |
| // |
| *F*/ |
| |
| IPPFUN(IppStatus, ippsSHA224GetTag,(Ipp8u* pTag, Ipp32u tagLen, const IppsSHA224State* pState)) |
| { |
| /* test state pointer and ID */ |
| IPP_BAD_PTR1_RET(pState); |
| pState = (IppsSHA256State*)( IPP_ALIGNED_PTR(pState, SHA256_ALIGNMENT) ); |
| IPP_BADARG_RET(idCtxSHA256 !=HASH_CTX_ID(pState), ippStsContextMatchErr); |
| |
| /* test digest pointer */ |
| IPP_BAD_PTR1_RET(pTag); |
| IPP_BADARG_RET((tagLen<1)||(sizeof(DigestSHA224)<tagLen), ippStsLengthErr); |
| |
| { |
| DigestSHA256 digest; |
| CopyBlock(HASH_VALUE(pState), digest, sizeof(DigestSHA256)); |
| cpFinalizeSHA256(digest, HASH_BUFF(pState), HAHS_BUFFIDX(pState), HASH_LENLO(pState)); |
| digest[0] = ENDIANNESS32(digest[0]); |
| digest[1] = ENDIANNESS32(digest[1]); |
| digest[2] = ENDIANNESS32(digest[2]); |
| digest[3] = ENDIANNESS32(digest[3]); |
| digest[4] = ENDIANNESS32(digest[4]); |
| digest[5] = ENDIANNESS32(digest[5]); |
| digest[6] = ENDIANNESS32(digest[6]); |
| digest[7] = ENDIANNESS32(digest[7]); |
| CopyBlock(digest, pTag, tagLen); |
| |
| return ippStsNoErr; |
| } |
| } |