123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113 |
- /*
- * Copyright (C) 2016 Intel Corporation. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
- #include "owndefs.h"
- #include "owncp.h"
- #include "pcpbn.h"
- #include "pcpprng.h"
- #include "pcphash.h"
- #include "pcptool.h"
- /*F*
- // Name: ippsPRNGGetSize
- //
- // Purpose: Returns size of PRNG context (bytes).
- //
- // Returns: Reason:
- // ippStsNullPtrErr NULL == pSize
- //
- // ippStsNoErr no error
- //
- // Parameters:
- // pSize pointer to the size of internal context
- *F*/
- IPPFUN(IppStatus, ippsPRNGGetSize, (int* pSize))
- {
- IPP_BAD_PTR1_RET(pSize);
- *pSize = sizeof(IppsPRNGState)
- +PRNG_ALIGNMENT-1;
- return ippStsNoErr;
- }
- /*F*
- // Name: ippsPRNGInit
- //
- // Purpose: Initializes PRNG context
- //
- // Returns: Reason:
- // ippStsNullPtrErr NULL == pRnd
- //
- // ippStsLengthErr seedBits < 1
- // seedBits < MAX_XKEY_SIZE
- // seedBits%8 !=0
- //
- // ippStsNoErr no error
- //
- // Parameters:
- // seedBits seed bitsize
- // pRnd pointer to the context to be initialized
- *F*/
- IPPFUN(IppStatus, ippsPRNGInit, (int seedBits, IppsPRNGState* pRnd))
- {
- /* test PRNG context */
- IPP_BAD_PTR1_RET(pRnd);
- pRnd = (IppsPRNGState*)( IPP_ALIGNED_PTR(pRnd, PRNG_ALIGNMENT) );
- /* test sizes */
- IPP_BADARG_RET((1>seedBits) || (seedBits>MAX_XKEY_SIZE) ||(seedBits&7), ippStsLengthErr);
- {
- int hashIvSize = cpHashIvSize(ippHashAlg_SHA1);
- const Ipp8u* iv = cpHashIV[ippHashAlg_SHA1];
- /* cleanup context */
- ZEXPAND_BNU((Ipp8u*)pRnd, 0, (cpSize)(sizeof(IppsPRNGState)));
- RAND_ID(pRnd) = idCtxPRNG;
- RAND_SEEDBITS(pRnd) = seedBits;
- /* default Q parameter */
- ((Ipp32u*)RAND_Q(pRnd))[0] = 0xFFFFFFFF;
- ((Ipp32u*)RAND_Q(pRnd))[1] = 0xFFFFFFFF;
- ((Ipp32u*)RAND_Q(pRnd))[2] = 0xFFFFFFFF;
- ((Ipp32u*)RAND_Q(pRnd))[3] = 0xFFFFFFFF;
- ((Ipp32u*)RAND_Q(pRnd))[4] = 0xFFFFFFFF;
- /* default T parameter */
- CopyBlock(iv, RAND_T(pRnd), hashIvSize);
- return ippStsNoErr;
- }
- }
|