Mercurial > hg > quicktun
view src/randombytes.c @ 70:c34252215268
Add a gitignore file
Ignore files generated during the build.
author | Andreas Rottmann <a.rottmann@gmx.at> |
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date | Fri, 17 Jun 2016 19:14:27 +0200 |
parents | fa53d1c54886 |
children |
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/* randombytes/devurandom.h version 20080713 D. J. Bernstein Public domain. */ #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <unistd.h> static int fd = -1; void randombytes(unsigned char *x,unsigned long long xlen) { int i; if (fd == -1) { for (;;) { fd = open("/dev/urandom",O_RDONLY); if (fd != -1) break; sleep(1); } } while (xlen > 0) { if (xlen < 1048576) i = xlen; else i = 1048576; i = read(fd,x,i); if (i < 1) { sleep(1); continue; } x += i; xlen -= i; } }