static {
try {
File file = new File("/dev/urandom");
// This stream is deliberately leaked.
urandom = new FileInputStream(file);
if (urandom.read() == -1) throw new RuntimeException("/dev/urandom not readable?");
// Now override the default SecureRandom implementation with this one.
int position = Security.insertProviderAt(new LinuxSecureRandomProvider(), 1);
if (position != -1) log.info("Secure randomness will be read from {} only.", file);
else log.info("Randomness is already secure.");
} catch (FileNotFoundException e) {
// Should never happen.
log.error("/dev/urandom does not appear to exist or is not openable");
throw new RuntimeException(e);
} catch (IOException e) {
log.error("/dev/urandom does not appear to be readable");
throw new RuntimeException(e);
}
}
