int YubiKeyUtil::generateRandom(unsigned char *result, size_t resultLen) {
size_t bufSize = resultLen;
unsigned char buf[bufSize];
memset(&buf, 0, sizeof(buf));
size_t bufLen = 0;
#ifdef Q_WS_WIN
CRandom random;
random.getRand(buf, bufSize);
bufLen = sizeof(buf);
#else
const char *random_places[] = {
"/dev/srandom",
"/dev/urandom",
"/dev/random",
0
};
const char **random_place;
for (random_place = random_places; *random_place; random_place++) {
FILE *random_file = fopen(*random_place, "r");
if (random_file) {
size_t read_bytes = 0;
while (read_bytes < bufSize) {
size_t n = fread(&buf[read_bytes],
1, bufSize - read_bytes,
random_file);
read_bytes += n;
}
fclose(random_file);
bufLen = sizeof(buf);
break; /* from for loop */
}
}
#endif
if(bufLen > 0) {
memcpy(result, buf, bufLen);
return 1;
}
return 0;
}
