| 1039 | |
| 1040 | |
| 1041 | NTSTATUS |
| 1042 | WINAPI |
| 1043 | CreateHash( |
| 1044 | _Outptr_ BCryptHash** ppHash, |
| 1045 | _Out_writes_bytes_all_opt_(cbHashObject) PUCHAR pbHashObject, |
| 1046 | _In_ ULONG cbHashObject, |
| 1047 | _In_reads_bytes_opt_(cbSecret) PUCHAR pbSecret, // optional |
| 1048 | _In_ ULONG cbSecret, // optional |
| 1049 | _In_ ULONG dwFlags) |
| 1050 | { |
| 1051 | BCryptHash* _pBCryptHash = reinterpret_cast<BCryptHash*>(pbHashObject); |
| 1052 | if (_pBCryptHash) |
| 1053 | { |
| 1054 | if (cbHashObject < sizeof(BCryptHash)) |
| 1055 | { |
| 1056 | return STATUS_BUFFER_TOO_SMALL; |
| 1057 | } |
| 1058 | |
| 1059 | new (_pBCryptHash) BCryptHash(this); |
| 1060 | _pBCryptHash->bCanFree = false; |
| 1061 | } |
| 1062 | else |
| 1063 | { |
| 1064 | if (cbHashObject != 0) |
| 1065 | { |
| 1066 | return STATUS_INVALID_PARAMETER; |
| 1067 | } |
| 1068 | const auto _hProcessHeap = ((TEB*)NtCurrentTeb())->ProcessEnvironmentBlock->ProcessHeap; |
| 1069 | _pBCryptHash = (BCryptHash*)HeapAlloc(_hProcessHeap, 0, sizeof(BCryptHash)); |
| 1070 | if (!_pBCryptHash) |
| 1071 | { |
| 1072 | return STATUS_NO_MEMORY; |
| 1073 | } |
| 1074 | |
| 1075 | new (_pBCryptHash) BCryptHash(this); |
| 1076 | } |
| 1077 | |
| 1078 | auto _Status = _pBCryptHash->Init(pbSecret, cbSecret, dwFlags); |
| 1079 | if (_Status) |
| 1080 | { |
| 1081 | _pBCryptHash->Release(); |
| 1082 | return _Status; |
| 1083 | } |
| 1084 | *ppHash = _pBCryptHash; |
| 1085 | return STATUS_SUCCESS; |
| 1086 | } |
| 1087 | }; |
| 1088 | |
| 1089 | struct BCryptRngAlgorithm : public BCryptAlgorithm |