Package javax.crypto

Examples of javax.crypto.Cipher.doFinal()

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        encrypt.down(event);
        Message sentMsg=(Message)((Event)observer.getDownMessages().get("message0")).getArg();
        String encText=new String(sentMsg.getBuffer());
        assert !encText.equals(messageText);
        Cipher cipher=encrypt2.getSymDecodingCipher();
        byte[] decodedBytes=cipher.doFinal(sentMsg.getBuffer());
        String temp=new String(decodedBytes);
        System.out.println("decoded text:" + temp);
        assert temp.equals(messageText);

    }
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        encrypt.setObserver(observer);

        encrypt.keyServer=true;
        String messageText="hello this is a test message";
        Cipher cipher=encrypt2.getSymEncodingCipher();
        byte[] encodedBytes=cipher.doFinal(messageText.getBytes());
        assert !new String(encodedBytes).equals(messageText);

        MessageDigest digest=MessageDigest.getInstance("MD5");
        digest.reset();
        digest.update(encrypt.getDesKey().getEncoded());
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        encrypt.setObserver(observer);

        encrypt.keyServer=true;
        String messageText="hello this is a test message";
        Cipher cipher=encrypt2.getSymEncodingCipher();
        byte[] encodedBytes=cipher.doFinal(messageText.getBytes());
        assert !new String(encodedBytes).equals(messageText);

        MessageDigest digest=MessageDigest.getInstance("MD5");
        digest.reset();
        digest.update(encrypt2.getDesKey().getEncoded());
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        encrypt.setObserver(observer);

        encrypt.keyServer=true;
        String messageText="hello this is a test message";
        Cipher cipher=encrypt2.getSymEncodingCipher();
        byte[] encodedBytes=cipher.doFinal(messageText.getBytes());
        assert !new String(encodedBytes).equals(messageText);

        Message msg=new Message(null, null, encodedBytes);
        Event event=new Event(Event.MSG, msg);
        encrypt.up(event);
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      Cipher cipher = Cipher.getInstance("DESede");  // Triple-DES encryption

      cipher.init(mode, tdes_key );
           
      return( cipher.doFinal(data, data_offset, data.length - data_offset ));
           
    }catch( Throwable e ){
     
      Debug.out( e );
     
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        String symVersion=new String(digest.digest(), "UTF-8");

        encrypt.keyServer=false;
        Message msg=new Message();
        msg.setBuffer(cipher.doFinal("hello".getBytes()));
        msg.putHeader(ENCRYPT_ID, new EncryptHeader(EncryptHeader.ENCRYPT, symVersion));

        Event evt=new Event(Event.MSG, msg);

        //pass in event to encrypt layer
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        // this should have changed us to the key server
        encrypt.up(event);

        // send another encrypted message
        Message msg2=new Message();
        msg2.setBuffer(cipher.doFinal("hello2".getBytes()));
        msg2.putHeader(ENCRYPT_ID, new EncryptHeader(EncryptHeader.ENCRYPT, symVersion));

        // we should have three messages now in our observer
        // that are decrypted
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        String symVersion=new String(digest.digest(), "UTF-8");

        // encrypt and send an initial message to peer
        Cipher cipher=server.getSymEncodingCipher();
        Message msg=new Message();
        msg.setBuffer(cipher.doFinal("hello".getBytes()));
        msg.putHeader(ENCRYPT_ID, new EncryptHeader(EncryptHeader.ENCRYPT, symVersion));

        Event evt=new Event(Event.MSG, msg);

        peer.up(evt);
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      Arrays.fill(zeros, (byte)0);
      IvParameterSpec ivSpec = new IvParameterSpec(zeros);
      Cipher cipher = Cipher.getInstance("Blowfish/CBC/PKCS5Padding");
      cipher.init(Cipher.DECRYPT_MODE, blowfishKey, ivSpec);

      ByteArrayInputStream byteArrayInStream = new ByteArrayInputStream(cipher.doFinal(licenseFile));
      returnProperties = new Properties();
      returnProperties.load(byteArrayInStream);
    } catch (Exception exception) {
      logger.error("decryptLicenseFile: generic Exception", exception);
    }
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      RSAPublicKey publicKey = (RSAPublicKey)keyFactory.generatePublic(publicKeySpec);

      Cipher cipher = Cipher.getInstance("RSA");
      cipher.init(Cipher.DECRYPT_MODE, publicKey);

      byte[] blowfishKeyByteArray = cipher.doFinal(encryptedKey);
      blowfishKey = new SecretKeySpec(blowfishKeyByteArray, "Blowfish");
    } catch (Exception exception) {
      logger.error("[decryptBlowfishKey] Exception thrown.", exception);
    }
    return blowfishKey;
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