Examples of javax.crypto.SealedObject

javax.crypto.SealedObject
A {@code SealedObject} is a wrapper around a {@code serializable} objectinstance and encrypts it using a cryptographic cipher.
Since a {@code SealedObject} instance is a serializable object itself it caneither be stored or transmitted over an insecure channel.
The wrapped object can later be decrypted (unsealed) using the corresponding key and then be deserialized to retrieve the original object.The sealed object itself keeps track of the cipher and corresponding parameters.

        try {
            byte[] data = Base64.decode(source);
            Cipher c = Cipher.getInstance("AES");
            c.init(Cipher.DECRYPT_MODE, SECRET_KEY);
            ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(data));
            SealedObject so = (SealedObject) in.readObject();
            return so.getObject(c);
        } catch (Exception e) {
            log.error("Unable to decrypt", e);
            return null;
        }
    }

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     */
    public static String encrypt(Serializable source) {
        try {
            Cipher c = Cipher.getInstance("AES");
            c.init(Cipher.ENCRYPT_MODE, SECRET_KEY);
            SealedObject so = new SealedObject(source, c);
            ByteArrayOutputStream store = new ByteArrayOutputStream();
            ObjectOutputStream out = new ObjectOutputStream(store);
            out.writeObject(so);
            out.close();
            byte[] data = store.toByteArray();

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        try {
            byte[] data = Base64.decode(source);
            Cipher c = Cipher.getInstance("AES");
            c.init(Cipher.DECRYPT_MODE, SECRET_KEY);
            ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(data));
            SealedObject so = (SealedObject) in.readObject();
            return so.getObject(c);
        } catch (Exception e) {
            log.error("Unable to decrypt", e);
            return null;
        }
    }

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     */
    public static String encrypt(Serializable source) {
        try {
            Cipher c = Cipher.getInstance("AES");
            c.init(Cipher.ENCRYPT_MODE, SECRET_KEY);
            SealedObject so = new SealedObject(source, c);
            ByteArrayOutputStream store = new ByteArrayOutputStream();
            ObjectOutputStream out = new ObjectOutputStream(store);
            out.writeObject(so);
            out.close();
            byte[] data = store.toByteArray();

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        try {
            byte[] data = Base64.decode(source);
            Cipher c = Cipher.getInstance("AES");
            c.init(Cipher.DECRYPT_MODE, SECRET_KEY);
            ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(data));
            SealedObject so = (SealedObject) in.readObject();
            return so.getObject(c);
        } catch (Exception e) {
            log.error("Unable to decrypt", e);
            return null;
        }
    }

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    public String encrypt(Serializable source) {
        SecretKeySpec spec = getSecretKeySpec();
        try {
            Cipher c = Cipher.getInstance(spec.getAlgorithm());
            c.init(Cipher.ENCRYPT_MODE, spec);
            SealedObject so = new SealedObject(source, c);
            ByteArrayOutputStream store = new ByteArrayOutputStream();
            ObjectOutputStream out = new ObjectOutputStream(store);
            out.writeObject(so);
            out.close();
            byte[] data = store.toByteArray();

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        try {
            byte[] data = Base64.decode(source);
            Cipher c = Cipher.getInstance(spec.getAlgorithm());
            c.init(Cipher.DECRYPT_MODE, spec);
            ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(data));
            SealedObject so = (SealedObject) in.readObject();
            return (Serializable) so.getObject(c);
        } catch (Exception e) {
            log.error("Unable to decrypt", e);
            return null;
        }
    }

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  public void setMessage(Serializable message) throws RemoteException {
    if (this.cryptoSwitch) {
      KeyPair keyPair = this.sender.getKeyPair();
      try {
        Cipher cipher = KeyController.publicEncryptCipher(keyPair);
        this.message = new SealedObject(message, cipher);
      } catch (Exception e) {
        e.printStackTrace();
      }
    } else {
      this.message = message;

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    if (message.isCrypted()) {
      ChatMemberModelInterface chatMemberModelInterface = message.getSender();
      KeyPair keyPair = chatMemberModelInterface.getKeyPair();
      try {
        Cipher cipher = KeyController.privateDecryptCipher(keyPair);
        SealedObject object = (SealedObject)message.getMessage();
        System.out.println(object.getObject(cipher));
      } catch (Exception e) {
        e.printStackTrace();
      }
    } else {
      System.out.println("[" + message.getSender().getName() + "]: " + message.getMessage());

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        return o;
    }


    private Object sealUnseal(Serializable o) throws Exception {
        PrivateCrypto pc = new PrivateCrypto("TripleDES", 168);
        SealedObject so = pc.seal(o);
        o = pc.unseal(so);
        return o;
    }

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