sgx_sha256_msg.cpp 2.6 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 "sgx_tcrypto.h"
  32. #include "ippcp.h"
  33. #include "stdlib.h"
  34. #ifndef SAFE_FREE
  35. #define SAFE_FREE(ptr) {if (NULL != (ptr)) {free(ptr); (ptr)=NULL;}}
  36. #endif
  37. /* SHA Hashing functions
  38. * Parameters:
  39. * Return: sgx_status_t - SGX_SUCCESS or failure as defined sgx_error.h
  40. * Inputs: uint8_t *p_src - Pointer to input stream to be hashed
  41. * uint32_t src_len - Length of input stream to be hashed
  42. * Output: sgx_sha256_hash_t *p_hash - Resultant hash from operation */
  43. sgx_status_t sgx_sha256_msg(const uint8_t *p_src, uint32_t src_len, sgx_sha256_hash_t *p_hash)
  44. {
  45. if ((p_src == NULL) || (p_hash == NULL))
  46. {
  47. return SGX_ERROR_INVALID_PARAMETER;
  48. }
  49. IppStatus ipp_ret = ippStsNoErr;
  50. ipp_ret = ippsHashMessage((const Ipp8u *) p_src, src_len, (Ipp8u *)p_hash, IPP_ALG_HASH_SHA256);
  51. switch (ipp_ret)
  52. {
  53. case ippStsNoErr: return SGX_SUCCESS;
  54. case ippStsMemAllocErr: return SGX_ERROR_OUT_OF_MEMORY;
  55. case ippStsNullPtrErr:
  56. case ippStsLengthErr: return SGX_ERROR_INVALID_PARAMETER;
  57. default: return SGX_ERROR_UNEXPECTED;
  58. }
  59. }