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comparison src/randombytes.c @ 64:fa53d1c54886

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Use default RNG for key generation, added options to generate public key from private key, use bundled tweetnacl as fallback instead of nacl download
author Ivo Smits <Ivo@UFO-Net.nl>
date Sat, 07 Jan 2017 18:07:27 +0100
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63:fa4983c5f7ea 64:fa53d1c54886
1 /*
2 randombytes/devurandom.h version 20080713
3 D. J. Bernstein
4 Public domain.
5 */
6
7 #include <sys/types.h>
8 #include <sys/stat.h>
9 #include <fcntl.h>
10 #include <unistd.h>
11
12 static int fd = -1;
13
14 void randombytes(unsigned char *x,unsigned long long xlen) {
15 int i;
16
17 if (fd == -1) {
18 for (;;) {
19 fd = open("/dev/urandom",O_RDONLY);
20 if (fd != -1) break;
21 sleep(1);
22 }
23 }
24
25 while (xlen > 0) {
26 if (xlen < 1048576) i = xlen; else i = 1048576;
27
28 i = read(fd,x,i);
29 if (i < 1) {
30 sleep(1);
31 continue;
32 }
33
34 x += i;
35 xlen -= i;
36 }
37 }