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47 lines
1.4 KiB
47 lines
1.4 KiB
/******************************************************************************
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*
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* Copyright 2017 Xaptum, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License
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*
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*****************************************************************************/
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#include "explicit_bzero.h"
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#ifdef _WIN32
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#include <windows.h>
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#elif defined(HAVE_MEMSET_S)
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#include <string.h>
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#include <stdlib.h>
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#endif
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void explicit_bzero(void *const pnt, const size_t len)
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{
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#ifdef _WIN32
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SecureZeroMemory(pnt, len);
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#elif defined(HAVE_MEMSET_S)
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if (len > 0U && memset_s(pnt, (rsize_t) len, 0, (rsize_t) len) != 0) {
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abort();
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}
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#elif defined(HAVE_EXPLICIT_BZERO)
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explicit_bzero(pnt, len);
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#else
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volatile unsigned char *volatile pnt_ =
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(volatile unsigned char *volatile) pnt;
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size_t i = (size_t) 0U;
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while (i < len) {
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pnt_[i++] = 0U;
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}
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#endif
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}
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