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

   1 package org.asamk.signal.manager;
   2
   3 import org.whispersystems.signalservice.internal.util.Base64;
   4
   5 import java.security.NoSuchAlgorithmException;
   6 import java.security.SecureRandom;
   7
   8 class KeyUtils {
   9
  10     private KeyUtils() {
  11     }
  12
  13     static String createSignalingKey() {
  14         return getSecret(52);
  15     }
  16
  17     static byte[] createProfileKey() {
  18         return getSecretBytes(32);
  19     }
  20
  21     static String createPassword() {
  22         return getSecret(18);
  23     }
  24
  25     static byte[] createGroupId() {
  26         return getSecretBytes(16);
  27     }
  28
  29     private static String getSecret(int size) {
  30         byte[] secret = getSecretBytes(size);
  31         return Base64.encodeBytes(secret);
  32     }
  33
  34     private static byte[] getSecretBytes(int size) {
  35         byte[] secret = new byte[size];
  36         getSecureRandom().nextBytes(secret);
  37         return secret;
  38     }
  39
  40     private static SecureRandom getSecureRandom() {
  41         try {
  42             return SecureRandom.getInstance("SHA1PRNG");
  43         } catch (NoSuchAlgorithmException e) {
  44             throw new AssertionError(e);
  45         }
  46     }
  47 }