private static byte[] generateIv(int ivLength) {
SecureRandom random = ZiftrUtils.createTrulySecureRandom();
if (random == null) {
String rngError = ZWApplication.getApplication().getString(R.string.zw_dialog_error_rng);
ZiftrDialogManager.showSimpleAlert(rngError);
}
byte[] iv = new byte[ivLength];
random.nextBytes(iv);
return iv;
}
public static String generateSalt() throws ZWKeyCrypterException {
try {
SecureRandom random = ZiftrUtils.createTrulySecureRandom();
if (random == null) {
String rngError = ZWApplication.getApplication().getString(R.string.zw_dialog_error_rng);
ZiftrDialogManager.showSimpleAlert(rngError);
}
byte[] salt = new byte[SALT_LENGTH];
random.nextBytes(salt);
String saltHex = ZiftrUtils.bytesToHexString(salt);
try {
ZLog.log("salt: " + salt);
} catch (Exception e) {
System.out.println("salt: " + saltHex);
}
return saltHex;
} catch (Exception e) {
throw new ZWKeyCrypterException("Unable to generate salt", e);
}
}