prepare_hash_sha1.cpp 3.2 KB

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  1. /*
  2. * Copyright (C) 2011-2017 Intel Corporation. All rights reserved.
  3. *
  4. * Redistribution and use in source and binary forms, with or without
  5. * modification, are permitted provided that the following conditions
  6. * are met:
  7. *
  8. * * Redistributions of source code must retain the above copyright
  9. * notice, this list of conditions and the following disclaimer.
  10. * * Redistributions in binary form must reproduce the above copyright
  11. * notice, this list of conditions and the following disclaimer in
  12. * the documentation and/or other materials provided with the
  13. * distribution.
  14. * * Neither the name of Intel Corporation nor the names of its
  15. * contributors may be used to endorse or promote products derived
  16. * from this software without specific prior written permission.
  17. *
  18. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19. * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20. * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21. * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22. * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23. * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24. * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25. * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26. * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28. * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29. *
  30. */
  31. #include "prepare_hash_sha1.h"
  32. #include <stdlib.h>
  33. #include "ippcp.h"
  34. PrepareHashSHA1::PrepareHashSHA1()
  35. : m_status(false), m_pCtx(0)
  36. {
  37. IppStatus ippstatus;
  38. int size;
  39. do
  40. {
  41. ippstatus = ippsSHA1GetSize(&size);
  42. if (ippstatus != ippStsNoErr)
  43. break;
  44. m_pCtx = (IppsSHA1State*) malloc(size);
  45. if (NULL == m_pCtx)
  46. break;
  47. ippstatus = ippsSHA1Init((IppsSHA1State*)m_pCtx);
  48. if (ippstatus != ippStsNoErr)
  49. {
  50. free(m_pCtx);
  51. m_pCtx = NULL;
  52. break;
  53. }
  54. m_status = true;
  55. } while (0);
  56. }
  57. PrepareHashSHA1::~PrepareHashSHA1(void)
  58. {
  59. if (m_pCtx) {
  60. free(m_pCtx);
  61. m_pCtx = NULL;
  62. }
  63. }
  64. bool PrepareHashSHA1::Update(const void* pData, size_t numBytes)
  65. {
  66. do
  67. {
  68. if (!m_status)
  69. break;
  70. m_status = false;
  71. if (NULL == pData || numBytes < 1 ||
  72. NULL == m_pCtx)
  73. break;
  74. if (numBytes > INT32_MAX)
  75. break;
  76. if (ippStsNoErr != ippsSHA1Update((const Ipp8u*)pData, (int)numBytes, (IppsSHA1State*)m_pCtx))
  77. break;
  78. m_status = true;
  79. } while (0);
  80. return m_status;
  81. }
  82. // pCMAC will contain the computed CMAC if SDS_SUCCESS
  83. bool PrepareHashSHA1::Finalize(SHA1_HASH *pHash)
  84. {
  85. do
  86. {
  87. if (!m_status)
  88. break;
  89. m_status = false;
  90. if (NULL == m_pCtx || NULL == pHash)
  91. break;
  92. if (ippStsNoErr != ippsSHA1Final((Ipp8u*)pHash, (IppsSHA1State*)m_pCtx))
  93. break;
  94. m_status = true;
  95. } while (0);
  96. return m_status;
  97. }