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#include <unistd.h>
#include <stdio.h>
int main() {
unsigned char buf[16];
if (getentropy(buf, sizeof(buf))) {
perror("failed to getentropy()");
return 1;
}
for (size_t i = 0; i < sizeof(buf); i++)
printf("%02x", buf[i]);
printf("\n");
return 0;
}
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