Java Code Examples for org.whispersystems.util.Base64#decode()

public static SignalServiceConfiguration createDefaultServiceConfiguration(String userAgent) {
    final Interceptor userAgentInterceptor = chain ->
            chain.proceed(chain.request().newBuilder()
                    .header("User-Agent", userAgent)
                    .build());

    final List<Interceptor> interceptors = Collections.singletonList(userAgentInterceptor);

    final byte[] zkGroupServerPublicParams;
    try {
        zkGroupServerPublicParams = Base64.decode(zkGroupServerPublicParamsHex);
    } catch (IOException e) {
        throw new AssertionError(e);
    }

    return new SignalServiceConfiguration(
            new SignalServiceUrl[]{new SignalServiceUrl(URL, TRUST_STORE)},
            makeSignalCdnUrlMapFor(new SignalCdnUrl[]{new SignalCdnUrl(CDN_URL, TRUST_STORE)}, new SignalCdnUrl[]{new SignalCdnUrl(CDN2_URL, TRUST_STORE)}),
            new SignalContactDiscoveryUrl[0],
            new SignalKeyBackupServiceUrl[]{new SignalKeyBackupServiceUrl(SIGNAL_KEY_BACKUP_URL, TRUST_STORE)},
            new SignalStorageUrl[]{new SignalStorageUrl(STORAGE_URL, TRUST_STORE)},
            interceptors,
            dns,
            zkGroupServerPublicParams
    );
}
 

private SecretKeySpec getCipherKey(String signalingKey) throws IOException {
  byte[] signalingKeyBytes = Base64.decode(signalingKey);
  byte[] cipherKey         = new byte[CIPHER_KEY_SIZE];
  System.arraycopy(signalingKeyBytes, 0, cipherKey, 0, cipherKey.length);

  return new SecretKeySpec(cipherKey, "AES");
}
 

private SecretKeySpec getMacKey(String signalingKey) throws IOException {
  byte[] signalingKeyBytes = Base64.decode(signalingKey);
  byte[] macKey            = new byte[MAC_KEY_SIZE];
  System.arraycopy(signalingKeyBytes, CIPHER_KEY_SIZE, macKey, 0, macKey.length);

  return new SecretKeySpec(macKey, "HmacSHA256");
}
 

public void testBadSignature() throws CertificateException, NoSuchAlgorithmException, IOException, KeyStoreException, CertPathValidatorException, SignatureException {
  String certificateChain = URLDecoder.decode("-----BEGIN%20CERTIFICATE-----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%2Bt%0AbeCTUR106AL1ENcWA4FX3K%2BE9BBL0/7X5rj5nIgX/R/1ubhkKWw9gfqPG3KeAtId%0Acv/uTO1yXv50vqaPvE1CRChvzdS/ZEBqQ5oVvLTPZ3VEicQjlytKgN9cLnxbwtuv%0ALUK7eyRPfJW/ksddOzP8VBBniolYnRCD2jrMRZ8nBM2ZWYwnXnwYeOAHV%2BW9tOhA%0AImwRwKF/95yAsVwd21ryHMJBcGH70qLagZ7Ttyt%2B%2BqO/6%2BKAXJuKwZqjRlEtSEz8%0AgZQeFfVYgcwSfo96oSMAzVr7V0L6HSDLRnpb6xxmbPdqNol4tQIDAQABo4GkMIGh%0AMB8GA1UdIwQYMBaAFHhDe3amfrzQr35CN%2Bs1fDuHAVE8MA4GA1UdDwEB/wQEAwIG%0AwDAMBgNVHRMBAf8EAjAAMGAGA1UdHwRZMFcwVaBToFGGT2h0dHA6Ly90cnVzdGVk%0Ac2VydmljZXMuaW50ZWwuY29tL2NvbnRlbnQvQ1JML1NHWC9BdHRlc3RhdGlvblJl%0AcG9ydFNpZ25pbmdDQS5jcmwwDQYJKoZIhvcNAQELBQADggGBAGcIthtcK9IVRz4r%0ARq%2BZKE%2B7k50/OxUsmW8aavOzKb0iCx07YQ9rzi5nU73tME2yGRLzhSViFs/LpFa9%0AlpQL6JL1aQwmDR74TxYGBAIi5f4I5TJoCCEqRHz91kpG6Uvyn2tLmnIdJbPE4vYv%0AWLrtXXfFBSSPD4Afn7%2B3/XUggAlc7oCTizOfbbtOFlYA4g5KcYgS1J2ZAeMQqbUd%0AZseZCcaZZZn65tdqee8UXZlDvx0%2BNdO0LR%2B5pFy%2BjuM0wWbu59MvzcmTXbjsi7HY%0A6zd53Yq5K244fwFHRQ8eOB0IWB%2B4PfM7FeAApZvlfqlKOlLcZL2uyVmzRkyR5yW7%0A2uo9mehX44CiPJ2fse9Y6eQtcfEhMPkmHXI01sN%2BKwPbpA39%2BxOsStjhP9N1Y1a2%0AtQAVo%2ByVgLgV2Hws73Fc0o3wC78qPEA%2Bv2aRs/Be3ZFDgDyghc/1fgU%2B7C%2BP6kbq%0Ad4poyb6IW8KCJbxfMJvkordNOgOUUxndPHEi/tb/U7uLjLOgPA%3D%3D%0A-----END%20CERTIFICATE-----%0A-----BEGIN%20CERTIFICATE-----%0AMIIFSzCCA7OgAwIBAgIJANEHdl0yo7CUMA0GCSqGSIb3DQEBCwUAMH4xCzAJBgNV%0ABAYTAlVTMQswCQYDVQQIDAJDQTEUMBIGA1UEBwwLU2FudGEgQ2xhcmExGjAYBgNV%0ABAoMEUludGVsIENvcnBvcmF0aW9uMTAwLgYDVQQDDCdJbnRlbCBTR1ggQXR0ZXN0%0AYXRpb24gUmVwb3J0IFNpZ25pbmcgQ0EwIBcNMTYxMTE0MTUzNzMxWhgPMjA0OTEy%0AMzEyMzU5NTlaMH4xCzAJBgNVBAYTAlVTMQswCQYDVQQIDAJDQTEUMBIGA1UEBwwL%0AU2FudGEgQ2xhcmExGjAYBgNVBAoMEUludGVsIENvcnBvcmF0aW9uMTAwLgYDVQQD%0ADCdJbnRlbCBTR1ggQXR0ZXN0YXRpb24gUmVwb3J0IFNpZ25pbmcgQ0EwggGiMA0G%0ACSqGSIb3DQEBAQUAA4IBjwAwggGKAoIBgQCfPGR%2BtXc8u1EtJzLA10Feu1Wg%2Bp7e%0ALmSRmeaCHbkQ1TF3Nwl3RmpqXkeGzNLd69QUnWovYyVSndEMyYc3sHecGgfinEeh%0ArgBJSEdsSJ9FpaFdesjsxqzGRa20PYdnnfWcCTvFoulpbFR4VBuXnnVLVzkUvlXT%0AL/TAnd8nIZk0zZkFJ7P5LtePvykkar7LcSQO85wtcQe0R1Raf/sQ6wYKaKmFgCGe%0ANpEJUmg4ktal4qgIAxk%2BQHUxQE42sxViN5mqglB0QJdUot/o9a/V/mMeH8KvOAiQ%0AbyinkNndn%2BBgk5sSV5DFgF0DffVqmVMblt5p3jPtImzBIH0QQrXJq39AT8cRwP5H%0AafuVeLHcDsRp6hol4P%2BZFIhu8mmbI1u0hH3W/0C2BuYXB5PC%2B5izFFh/nP0lc2Lf%0A6rELO9LZdnOhpL1ExFOq9H/B8tPQ84T3Sgb4nAifDabNt/zu6MmCGo5U8lwEFtGM%0ARoOaX4AS%2B909x00lYnmtwsDVWv9vBiJCXRsCAwEAAaOByTCBxjBgBgNVHR8EWTBX%0AMFWgU6BRhk9odHRwOi8vdHJ1c3RlZHNlcnZpY2VzLmludGVsLmNvbS9jb250ZW50%0AL0NSTC9TR1gvQXR0ZXN0YXRpb25SZXBvcnRTaWduaW5nQ0EuY3JsMB0GA1UdDgQW%0ABBR4Q3t2pn680K9%2BQjfrNXw7hwFRPDAfBgNVHSMEGDAWgBR4Q3t2pn680K9%2BQjfr%0ANXw7hwFRPDAOBgNVHQ8BAf8EBAMCAQYwEgYDVR0TAQH/BAgwBgEB/wIBADANBgkq%0AhkiG9w0BAQsFAAOCAYEAeF8tYMXICvQqeXYQITkV2oLJsp6J4JAqJabHWxYJHGir%0AIEqucRiJSSx%2BHjIJEUVaj8E0QjEud6Y5lNmXlcjqRXaCPOqK0eGRz6hi%2BripMtPZ%0AsFNaBwLQVV905SDjAzDzNIDnrcnXyB4gcDFCvwDFKKgLRjOB/WAqgscDUoGq5ZVi%0AzLUzTqiQPmULAQaB9c6Oti6snEFJiCQ67JLyW/E83/frzCmO5Ru6WjU4tmsmy8Ra%0AUd4APK0wZTGtfPXU7w%2BIBdG5Ez0kE1qzxGQaL4gINJ1zMyleDnbuS8UicjJijvqA%0A152Sq049ESDz%2B1rRGc2NVEqh1KaGXmtXvqxXcTB%2BLjy5Bw2ke0v8iGngFBPqCTVB%0A3op5KBG3RjbF6RRSzwzuWfL7QErNC8WEy5yDVARzTA5%2BxmBc388v9Dm21HGfcC8O%0ADD%2BgT9sSpssq0ascmvH49MOgjt1yoysLtdCtJW/9FZpoOypaHx0R%2BmJTLwPXVMrv%0ADaVzWh5aiEx%2BidkSGMnX%0A-----END%20CERTIFICATE-----%0A");
  String signature        = "Kn2Ya2T039qvEWIzIQeSksNyyCQIkcVjciClcp3a6C766dJANXxLLIn6CfyvUZddMtePrTOLpC2e5QTQxB4RwtWmFfr7nxRdFUtA3dH2DAQL5DqqlmPv46ZWSPfiiOXUsu8vNgX3Z4Znt4Q+dIPIquNPY8ZmiAcpKR7n2K3QtabgOnJ2EyngabY3LMQTtriXbZjpl53ynhVhV1rciMdvMaTz4DUYt7gKi+KeNd3CBFSev+eTgYPC3em96J/3bfVR+wC5m3JGbIBCrwAsbO05JkiNIMck3s+p4d/hwiABR75EplxaWmGgIm6VvUKtGhdJ/cNrmF0nxMX6Vi6N2WaLTA==";
  String signatureBody    = "{\"id\":\"287419896494669543891634765983074535548\",\"timestamp\":\"2019-03-11T20:01:21.658293\",\"version\":3,\"isvEnclaveQuoteStatus\":\"OK\",\"isvEnclaveQuoteBody\":\"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\"}";

  KeyStore keyStore = KeyStore.getInstance("JKS");
  keyStore.load(getClass().getResourceAsStream("/ias.jks"), "whisper".toCharArray());

  SigningCertificate certificate      = new SigningCertificate(certificateChain, keyStore);
  byte[]             decodedSignature = Base64.decode(signature);

  for (int i=0;i<signature.length();i++) {
    for (int j=0;i<8;i++) {
      byte[] malformedSignature = new byte[decodedSignature.length];
      System.arraycopy(decodedSignature, 0, malformedSignature, 0, decodedSignature.length);

      malformedSignature[i] ^= (0x01 << j);

      try {
        certificate.verifySignature(signatureBody, Base64.encodeBytes(malformedSignature));
        throw new AssertionError("Signature verification should fail!");
      } catch (SignatureException e) {
        // good
      }
    }
  }
}
 

private SecretKeySpec getCipherKey(String signalingKey) throws IOException {
  byte[] signalingKeyBytes = Base64.decode(signalingKey);
  byte[] cipherKey         = new byte[CIPHER_KEY_SIZE];
  System.arraycopy(signalingKeyBytes, 0, cipherKey, 0, cipherKey.length);

  return new SecretKeySpec(cipherKey, "AES");
}
 

private SecretKeySpec getMacKey(String signalingKey) throws IOException {
  byte[] signalingKeyBytes = Base64.decode(signalingKey);
  byte[] macKey            = new byte[MAC_KEY_SIZE];
  System.arraycopy(signalingKeyBytes, CIPHER_KEY_SIZE, macKey, 0, macKey.length);

  return new SecretKeySpec(macKey, "HmacSHA256");
}
 

public void testBadSignature() throws CertificateException, NoSuchAlgorithmException, IOException, KeyStoreException, CertPathValidatorException, SignatureException {
  String certificateChain = "-----BEGIN%20CERTIFICATE-----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%2Bt%0AbeCTUR106AL1ENcWA4FX3K%2BE9BBL0/7X5rj5nIgX/R/1ubhkKWw9gfqPG3KeAtId%0Acv/uTO1yXv50vqaPvE1CRChvzdS/ZEBqQ5oVvLTPZ3VEicQjlytKgN9cLnxbwtuv%0ALUK7eyRPfJW/ksddOzP8VBBniolYnRCD2jrMRZ8nBM2ZWYwnXnwYeOAHV%2BW9tOhA%0AImwRwKF/95yAsVwd21ryHMJBcGH70qLagZ7Ttyt%2B%2BqO/6%2BKAXJuKwZqjRlEtSEz8%0AgZQeFfVYgcwSfo96oSMAzVr7V0L6HSDLRnpb6xxmbPdqNol4tQIDAQABo4GkMIGh%0AMB8GA1UdIwQYMBaAFHhDe3amfrzQr35CN%2Bs1fDuHAVE8MA4GA1UdDwEB/wQEAwIG%0AwDAMBgNVHRMBAf8EAjAAMGAGA1UdHwRZMFcwVaBToFGGT2h0dHA6Ly90cnVzdGVk%0Ac2VydmljZXMuaW50ZWwuY29tL2NvbnRlbnQvQ1JML1NHWC9BdHRlc3RhdGlvblJl%0AcG9ydFNpZ25pbmdDQS5jcmwwDQYJKoZIhvcNAQELBQADggGBAGcIthtcK9IVRz4r%0ARq%2BZKE%2B7k50/OxUsmW8aavOzKb0iCx07YQ9rzi5nU73tME2yGRLzhSViFs/LpFa9%0AlpQL6JL1aQwmDR74TxYGBAIi5f4I5TJoCCEqRHz91kpG6Uvyn2tLmnIdJbPE4vYv%0AWLrtXXfFBSSPD4Afn7%2B3/XUggAlc7oCTizOfbbtOFlYA4g5KcYgS1J2ZAeMQqbUd%0AZseZCcaZZZn65tdqee8UXZlDvx0%2BNdO0LR%2B5pFy%2BjuM0wWbu59MvzcmTXbjsi7HY%0A6zd53Yq5K244fwFHRQ8eOB0IWB%2B4PfM7FeAApZvlfqlKOlLcZL2uyVmzRkyR5yW7%0A2uo9mehX44CiPJ2fse9Y6eQtcfEhMPkmHXI01sN%2BKwPbpA39%2BxOsStjhP9N1Y1a2%0AtQAVo%2ByVgLgV2Hws73Fc0o3wC78qPEA%2Bv2aRs/Be3ZFDgDyghc/1fgU%2B7C%2BP6kbq%0Ad4poyb6IW8KCJbxfMJvkordNOgOUUxndPHEi/tb/U7uLjLOgPA%3D%3D%0A-----END%20CERTIFICATE-----%0A-----BEGIN%20CERTIFICATE-----%0AMIIFSzCCA7OgAwIBAgIJANEHdl0yo7CUMA0GCSqGSIb3DQEBCwUAMH4xCzAJBgNV%0ABAYTAlVTMQswCQYDVQQIDAJDQTEUMBIGA1UEBwwLU2FudGEgQ2xhcmExGjAYBgNV%0ABAoMEUludGVsIENvcnBvcmF0aW9uMTAwLgYDVQQDDCdJbnRlbCBTR1ggQXR0ZXN0%0AYXRpb24gUmVwb3J0IFNpZ25pbmcgQ0EwIBcNMTYxMTE0MTUzNzMxWhgPMjA0OTEy%0AMzEyMzU5NTlaMH4xCzAJBgNVBAYTAlVTMQswCQYDVQQIDAJDQTEUMBIGA1UEBwwL%0AU2FudGEgQ2xhcmExGjAYBgNVBAoMEUludGVsIENvcnBvcmF0aW9uMTAwLgYDVQQD%0ADCdJbnRlbCBTR1ggQXR0ZXN0YXRpb24gUmVwb3J0IFNpZ25pbmcgQ0EwggGiMA0G%0ACSqGSIb3DQEBAQUAA4IBjwAwggGKAoIBgQCfPGR%2BtXc8u1EtJzLA10Feu1Wg%2Bp7e%0ALmSRmeaCHbkQ1TF3Nwl3RmpqXkeGzNLd69QUnWovYyVSndEMyYc3sHecGgfinEeh%0ArgBJSEdsSJ9FpaFdesjsxqzGRa20PYdnnfWcCTvFoulpbFR4VBuXnnVLVzkUvlXT%0AL/TAnd8nIZk0zZkFJ7P5LtePvykkar7LcSQO85wtcQe0R1Raf/sQ6wYKaKmFgCGe%0ANpEJUmg4ktal4qgIAxk%2BQHUxQE42sxViN5mqglB0QJdUot/o9a/V/mMeH8KvOAiQ%0AbyinkNndn%2BBgk5sSV5DFgF0DffVqmVMblt5p3jPtImzBIH0QQrXJq39AT8cRwP5H%0AafuVeLHcDsRp6hol4P%2BZFIhu8mmbI1u0hH3W/0C2BuYXB5PC%2B5izFFh/nP0lc2Lf%0A6rELO9LZdnOhpL1ExFOq9H/B8tPQ84T3Sgb4nAifDabNt/zu6MmCGo5U8lwEFtGM%0ARoOaX4AS%2B909x00lYnmtwsDVWv9vBiJCXRsCAwEAAaOByTCBxjBgBgNVHR8EWTBX%0AMFWgU6BRhk9odHRwOi8vdHJ1c3RlZHNlcnZpY2VzLmludGVsLmNvbS9jb250ZW50%0AL0NSTC9TR1gvQXR0ZXN0YXRpb25SZXBvcnRTaWduaW5nQ0EuY3JsMB0GA1UdDgQW%0ABBR4Q3t2pn680K9%2BQjfrNXw7hwFRPDAfBgNVHSMEGDAWgBR4Q3t2pn680K9%2BQjfr%0ANXw7hwFRPDAOBgNVHQ8BAf8EBAMCAQYwEgYDVR0TAQH/BAgwBgEB/wIBADANBgkq%0AhkiG9w0BAQsFAAOCAYEAeF8tYMXICvQqeXYQITkV2oLJsp6J4JAqJabHWxYJHGir%0AIEqucRiJSSx%2BHjIJEUVaj8E0QjEud6Y5lNmXlcjqRXaCPOqK0eGRz6hi%2BripMtPZ%0AsFNaBwLQVV905SDjAzDzNIDnrcnXyB4gcDFCvwDFKKgLRjOB/WAqgscDUoGq5ZVi%0AzLUzTqiQPmULAQaB9c6Oti6snEFJiCQ67JLyW/E83/frzCmO5Ru6WjU4tmsmy8Ra%0AUd4APK0wZTGtfPXU7w%2BIBdG5Ez0kE1qzxGQaL4gINJ1zMyleDnbuS8UicjJijvqA%0A152Sq049ESDz%2B1rRGc2NVEqh1KaGXmtXvqxXcTB%2BLjy5Bw2ke0v8iGngFBPqCTVB%0A3op5KBG3RjbF6RRSzwzuWfL7QErNC8WEy5yDVARzTA5%2BxmBc388v9Dm21HGfcC8O%0ADD%2BgT9sSpssq0ascmvH49MOgjt1yoysLtdCtJW/9FZpoOypaHx0R%2BmJTLwPXVMrv%0ADaVzWh5aiEx%2BidkSGMnX%0A-----END%20CERTIFICATE-----%0A";
  String signature        = "Kn2Ya2T039qvEWIzIQeSksNyyCQIkcVjciClcp3a6C766dJANXxLLIn6CfyvUZddMtePrTOLpC2e5QTQxB4RwtWmFfr7nxRdFUtA3dH2DAQL5DqqlmPv46ZWSPfiiOXUsu8vNgX3Z4Znt4Q+dIPIquNPY8ZmiAcpKR7n2K3QtabgOnJ2EyngabY3LMQTtriXbZjpl53ynhVhV1rciMdvMaTz4DUYt7gKi+KeNd3CBFSev+eTgYPC3em96J/3bfVR+wC5m3JGbIBCrwAsbO05JkiNIMck3s+p4d/hwiABR75EplxaWmGgIm6VvUKtGhdJ/cNrmF0nxMX6Vi6N2WaLTA==";
  String signatureBody    = "{\"id\":\"287419896494669543891634765983074535548\",\"timestamp\":\"2019-03-11T20:01:21.658293\",\"version\":3,\"isvEnclaveQuoteStatus\":\"OK\",\"isvEnclaveQuoteBody\":\"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\"}";

  KeyStore keyStore = KeyStore.getInstance("JKS");
  keyStore.load(getClass().getResourceAsStream("/ias.jks"), "whisper".toCharArray());

  SigningCertificate certificate      = new SigningCertificate(certificateChain, keyStore);
  byte[]             decodedSignature = Base64.decode(signature);

  for (int i=0;i<signature.length();i++) {
    for (int j=0;i<8;i++) {
      byte[] malformedSignature = new byte[decodedSignature.length];
      System.arraycopy(decodedSignature, 0, malformedSignature, 0, decodedSignature.length);

      malformedSignature[i] ^= (0x01 << j);

      try {
        certificate.verifySignature(signatureBody, Base64.encodeBytes(malformedSignature));
        throw new AssertionError("Signature verification should fail!");
      } catch (SignatureException e) {
        // good
      }
    }
  }
}
 

public static byte[] decodeGroupId(String groupId) throws GroupIdFormatException {
    try {
        return Base64.decode(groupId);
    } catch (IOException e) {
        throw new GroupIdFormatException(groupId, e);
    }
}
 

@Override
public JsonSessionStore deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException {
    JsonNode node = jsonParser.getCodec().readTree(jsonParser);

    JsonSessionStore sessionStore = new JsonSessionStore();

    if (node.isArray()) {
        for (JsonNode session : node) {
            String sessionName = session.has("name")
                    ? session.get("name").asText()
                    : null;
            if (UuidUtil.isUuid(sessionName)) {
                // Ignore sessions that were incorrectly created with UUIDs as name
                continue;
            }

            UUID uuid = session.hasNonNull("uuid")
                    ? UuidUtil.parseOrNull(session.get("uuid").asText())
                    : null;
            final SignalServiceAddress serviceAddress = uuid == null
                    ? Util.getSignalServiceAddressFromIdentifier(sessionName)
                    : new SignalServiceAddress(uuid, sessionName);
            final int deviceId = session.get("deviceId").asInt();
            final String record = session.get("record").asText();
            try {
                SessionInfo sessionInfo = new SessionInfo(serviceAddress, deviceId, Base64.decode(record));
                sessionStore.sessions.add(sessionInfo);
            } catch (IOException e) {
                System.out.println(String.format("Error while decoding session for: %s", sessionName));
            }
        }
    }

    return sessionStore;
}
 

@Override
public byte[] deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
  return Base64.decode(p.getValueAsString());
}
 

@Override
public byte[] deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
  return Base64.decode(p.getValueAsString());
}
 

/**
 * Construct an envelope from a serialized, Base64 encoded SignalServiceEnvelope, encrypted
 * with a signaling key.
 *
 * @param message The serialized SignalServiceEnvelope, base64 encoded and encrypted.
 * @param signalingKey The signaling key.
 * @throws IOException
 * @throws InvalidVersionException
 */
public SignalServiceEnvelope(String message, String signalingKey, boolean isSignalingKeyEncrypted)
    throws IOException, InvalidVersionException
{
  this(Base64.decode(message), signalingKey, isSignalingKeyEncrypted);
}
 

/**
 * Construct an envelope from a serialized, Base64 encoded SignalServiceEnvelope, encrypted
 * with a signaling key.
 *
 * @param message The serialized SignalServiceEnvelope, base64 encoded and encrypted.
 * @param signalingKey The signaling key.
 * @throws IOException
 * @throws InvalidVersionException
 */
public SignalServiceEnvelope(String message, String signalingKey, boolean isSignalingKeyEncrypted)
    throws IOException, InvalidVersionException
{
  this(Base64.decode(message), signalingKey, isSignalingKeyEncrypted);
}