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

   1 package org.asamk.signal.manager.util;
   2
   3 import org.asamk.signal.util.RandomUtils;
   4 import org.signal.zkgroup.InvalidInputException;
   5 import org.signal.zkgroup.profiles.ProfileKey;
   6 import org.whispersystems.libsignal.IdentityKey;
   7 import org.whispersystems.libsignal.IdentityKeyPair;
   8 import org.whispersystems.libsignal.ecc.Curve;
   9 import org.whispersystems.libsignal.ecc.ECKeyPair;
  10 import org.whispersystems.libsignal.ecc.ECPrivateKey;
  11 import org.whispersystems.signalservice.api.kbs.MasterKey;
  12 import org.whispersystems.util.Base64;
  13
  14 public class KeyUtils {
  15
  16     private KeyUtils() {
  17     }
  18
  19     public static IdentityKeyPair generateIdentityKeyPair() {
  20         ECKeyPair djbKeyPair = Curve.generateKeyPair();
  21         IdentityKey djbIdentityKey = new IdentityKey(djbKeyPair.getPublicKey());
  22         ECPrivateKey djbPrivateKey = djbKeyPair.getPrivateKey();
  23
  24         return new IdentityKeyPair(djbIdentityKey, djbPrivateKey);
  25     }
  26
  27     public static String createSignalingKey() {
  28         return getSecret(52);
  29     }
  30
  31     public static ProfileKey createProfileKey() {
  32         try {
  33             return new ProfileKey(getSecretBytes(32));
  34         } catch (InvalidInputException e) {
  35             throw new AssertionError("Profile key is guaranteed to be 32 bytes here");
  36         }
  37     }
  38
  39     public static String createPassword() {
  40         return getSecret(18);
  41     }
  42
  43     public static byte[] createStickerUploadKey() {
  44         return getSecretBytes(32);
  45     }
  46
  47     public static MasterKey createMasterKey() {
  48         return MasterKey.createNew(RandomUtils.getSecureRandom());
  49     }
  50
  51     private static String getSecret(int size) {
  52         byte[] secret = getSecretBytes(size);
  53         return Base64.encodeBytes(secret);
  54     }
  55
  56     public static byte[] getSecretBytes(int size) {
  57         byte[] secret = new byte[size];
  58         RandomUtils.getSecureRandom().nextBytes(secret);
  59         return secret;
  60     }
  61 }