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https://github.com/trezor/trezor-firmware.git
synced 2024-11-18 21:48:13 +00:00
26 lines
680 B
C
26 lines
680 B
C
#include <string.h>
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#include <strings.h>
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// taken from https://github.com/jedisct1/libsodium/blob/1647f0d53ae0e370378a9195477e3df0a792408f/src/libsodium/sodium/utils.c#L102-L130
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void memzero(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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memset_s(pnt, (rsize_t) len, 0, (rsize_t) len);
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#elif defined(HAVE_EXPLICIT_BZERO)
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explicit_bzero(pnt, len);
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#elif defined(HAVE_EXPLICIT_MEMSET)
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explicit_memset(pnt, 0, 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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