nmode's Git Repositories - signal-cli/blob - src/main/java/org/asamk/signal/Util.java

   1 package org.asamk.signal;
   2
   3 import java.io.File;
   4 import java.io.IOException;
   5 import java.security.NoSuchAlgorithmException;
   6 import java.security.SecureRandom;
   7
   8 class Util {
   9     public static String getSecret(int size) {
  10         byte[] secret = getSecretBytes(size);
  11         return Base64.encodeBytes(secret);
  12     }
  13
  14     public static byte[] getSecretBytes(int size) {
  15         byte[] secret = new byte[size];
  16         getSecureRandom().nextBytes(secret);
  17         return secret;
  18     }
  19
  20     private static SecureRandom getSecureRandom() {
  21         try {
  22             return SecureRandom.getInstance("SHA1PRNG");
  23         } catch (NoSuchAlgorithmException e) {
  24             throw new AssertionError(e);
  25         }
  26     }
  27
  28     public static File createTempFile() throws IOException {
  29         return File.createTempFile("signal_tmp_", ".tmp");
  30     }
  31 }