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

   1 package org.asamk.signal.manager.util;
   2
   3 import org.asamk.signal.manager.storage.profiles.SignalProfile;
   4 import org.signal.zkgroup.profiles.ProfileKey;
   5 import org.whispersystems.signalservice.api.crypto.InvalidCiphertextException;
   6 import org.whispersystems.signalservice.api.crypto.ProfileCipher;
   7 import org.whispersystems.signalservice.api.profiles.SignalServiceProfile;
   8
   9 import java.util.Base64;
  10
  11 public class ProfileUtils {
  12
  13     public static SignalProfile decryptProfile(
  14             final ProfileKey profileKey, final SignalServiceProfile encryptedProfile
  15     ) {
  16         var profileCipher = new ProfileCipher(profileKey);
  17         try {
  18             var name = decryptName(encryptedProfile.getName(), profileCipher);
  19             var about = decryptName(encryptedProfile.getAbout(), profileCipher);
  20             var aboutEmoji = decryptName(encryptedProfile.getAboutEmoji(), profileCipher);
  21             String unidentifiedAccess;
  22             try {
  23                 unidentifiedAccess = encryptedProfile.getUnidentifiedAccess() == null
  24                         || !profileCipher.verifyUnidentifiedAccess(Base64.getDecoder()
  25                         .decode(encryptedProfile.getUnidentifiedAccess()))
  26                         ? null
  27                         : encryptedProfile.getUnidentifiedAccess();
  28             } catch (IllegalArgumentException e) {
  29                 unidentifiedAccess = null;
  30             }
  31             return new SignalProfile(encryptedProfile.getIdentityKey(),
  32                     name,
  33                     about,
  34                     aboutEmoji,
  35                     unidentifiedAccess,
  36                     encryptedProfile.isUnrestrictedUnidentifiedAccess(),
  37                     encryptedProfile.getCapabilities());
  38         } catch (InvalidCiphertextException e) {
  39             return null;
  40         }
  41     }
  42
  43     private static String decryptName(
  44             final String encryptedName, final ProfileCipher profileCipher
  45     ) throws InvalidCiphertextException {
  46         try {
  47             return encryptedName == null
  48                     ? null
  49                     : new String(profileCipher.decryptName(Base64.getDecoder().decode(encryptedName)));
  50         } catch (IllegalArgumentException e) {
  51             return null;
  52         }
  53     }
  54 }