Examples of CipherInputStream

ch.ethz.ssh2.crypto.cipher.CipherInputStream
CipherInputStream. @author Christian Plattner, plattner@inf.ethz.ch @version $Id: CipherInputStream.java,v 1.3 2006/02/14 15:17:37 cplattne Exp $
com.trilead.ssh2.crypto.cipher.CipherInputStream
CipherInputStream. @author Christian Plattner, plattner@inf.ethz.ch @version $Id: CipherInputStream.java,v 1.3 2006/02/14 15:17:37 cplattne Exp $
javax.crypto.CipherInputStream
@com.intel.drl.spec_ref
org.bouncycastle.crypto.io.CipherInputStream
A CipherInputStream is composed of an InputStream and a BufferedBlockCipher so that read() methods return data that are read in from the underlying InputStream but have been additionally processed by the Cipher. The Cipher must be fully initialized before being used by a CipherInputStream.
For example, if the Cipher is initialized for decryption, the CipherInputStream will attempt to read in data and decrypt them, before returning the decrypted data.

Examples of javax.crypto.CipherInputStream

        Key                     key = null;
        KeyGenerator            keyGen;
        SecureRandom            rand;
        Cipher                  in = null;
        Cipher                  out = null;
        CipherInputStream       cIn;
        CipherOutputStream      cOut;
        ByteArrayInputStream    bIn;
        ByteArrayOutputStream   bOut;


        rand = new FixedSecureRandom();


        try
        {
            String  baseAlgorithm;
            int     index = algorithm.indexOf('/');


            if (index > 0)
            {
                baseAlgorithm = algorithm.substring(0, index);
            }
            else
            {
                baseAlgorithm = algorithm;
            }


            if (baseAlgorithm.equals("IDEA") & noIDEA())
            {
                return;
            }


            keyGen = KeyGenerator.getInstance(baseAlgorithm, "BC");
            if (!keyGen.getAlgorithm().equals(baseAlgorithm))
            {
                fail("wrong key generator returned!");
            }
            keyGen.init(rand);


            key = keyGen.generateKey();


            in = Cipher.getInstance(algorithm, "BC");
            out = Cipher.getInstance(algorithm, "BC");


            if (!in.getAlgorithm().startsWith(baseAlgorithm))
            {
                fail("wrong cipher returned!");
            }


            if (algorithm.startsWith("RC2"))
            {
                out.init(Cipher.ENCRYPT_MODE, key, rc2Spec, rand);
            }
            else if (algorithm.startsWith("RC5"))
            {
                if (algorithm.startsWith("RC5-64"))
                {
                    out.init(Cipher.ENCRYPT_MODE, key, rc564Spec, rand);
                }
                else
                {
                    out.init(Cipher.ENCRYPT_MODE, key, rc5Spec, rand);
                }
            }
            else
            {
                out.init(Cipher.ENCRYPT_MODE, key, rand);
            }
        }
        catch (Exception e)
        {
            fail("" + algorithm + " failed initialisation - " + e.toString(), e);
        }


        //
        // grab the iv if there is one
        //
        try
        {
            if (algorithm.startsWith("RC2"))
            {
                in.init(Cipher.DECRYPT_MODE, key, rc2Spec);
            }
            else if (algorithm.startsWith("RC5"))
            {
                if (algorithm.startsWith("RC5-64"))
                {
                    in.init(Cipher.DECRYPT_MODE, key, rc564Spec, rand);
                }
                else
                {
                    in.init(Cipher.DECRYPT_MODE, key, rc5Spec, rand);
                }
            }
            else
            {
                byte[]    iv;


                iv = out.getIV();
                if (iv != null)
                {
                    try
                    {
                        byte[]  nIv = new byte[iv.length - 1];


                        in.init(Cipher.DECRYPT_MODE, key, new IvParameterSpec(nIv));
                        fail("failed to pick up short IV");
                    }
                    catch (InvalidAlgorithmParameterException e)
                    {
                        // ignore - this is what we want...
                    }


                    IvParameterSpec    spec;


                    spec = new IvParameterSpec(iv);


                    in.init(Cipher.DECRYPT_MODE, key, spec);
                }
                else
                {
                    in.init(Cipher.DECRYPT_MODE, key);
                }
            }
        }
        catch (Exception e)
        {
            fail("" + algorithm + " failed initialisation - " + e.toString());
        }


        //
        // encryption pass
        //
        bOut = new ByteArrayOutputStream();


        cOut = new CipherOutputStream(bOut, out);


        try
        {
            for (int i = 0; i != input.length / 2; i++)
            {
                cOut.write(input[i]);
            }
            cOut.write(input, input.length / 2, input.length - input.length / 2);
            cOut.close();
        }
        catch (IOException e)
        {
            fail("" + algorithm + " failed encryption - " + e.toString());
        }


        byte[]    bytes;


        bytes = bOut.toByteArray();


        if (!areEqual(bytes, output))
        {
            fail("" + algorithm + " failed encryption - expected " + new String(Hex.encode(output)) + " got " + new String(Hex.encode(bytes)));
        }


        //
        // decryption pass
        //
        bIn = new ByteArrayInputStream(bytes);


        cIn = new CipherInputStream(bIn, in);


        try
        {
            DataInputStream dIn = new DataInputStream(cIn);

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Examples of javax.crypto.CipherInputStream

        else
        {
            out.init(Cipher.DECRYPT_MODE, key);
        }


        CipherInputStream       cIn = new CipherInputStream(bIn, in);
        CipherOutputStream      cOut = new CipherOutputStream(bOut, out);


        int c;


        while ((c = cIn.read()) >= 0)
        {
            cOut.write(c);
        }


        cIn.close();


        cOut.flush();
        cOut.close();


        String  res = new String(bOut.toByteArray());

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Examples of javax.crypto.CipherInputStream

        byte[]      output)
        throws Exception
    {
        Key                     key;
        Cipher                  in, out;
        CipherInputStream       cIn;
        CipherOutputStream      cOut;
        ByteArrayInputStream    bIn;
        ByteArrayOutputStream   bOut;


        key = new SecretKeySpec(keyBytes, "AES");


        in = Cipher.getInstance("AES/ECB/NoPadding", "BC");
        out = Cipher.getInstance("AES/ECB/NoPadding", "BC");
        
        try
        {
            out.init(Cipher.ENCRYPT_MODE, key);
        }
        catch (Exception e)
        {
            fail("AES failed initialisation - " + e.toString(), e);
        }


        try
        {
            in.init(Cipher.DECRYPT_MODE, key);
        }
        catch (Exception e)
        {
            fail("AES failed initialisation - " + e.toString(), e);
        }


        //
        // encryption pass
        //
        bOut = new ByteArrayOutputStream();


        cOut = new CipherOutputStream(bOut, out);


        try
        {
            for (int i = 0; i != input.length / 2; i++)
            {
                cOut.write(input[i]);
            }
            cOut.write(input, input.length / 2, input.length - input.length / 2);
            cOut.close();
        }
        catch (IOException e)
        {
            fail("AES failed encryption - " + e.toString(), e);
        }


        byte[]    bytes;


        bytes = bOut.toByteArray();


        if (!areEqual(bytes, output))
        {
            fail("AES failed encryption - expected " + new String(Hex.encode(output)) + " got " + new String(Hex.encode(bytes)));
        }


        //
        // decryption pass
        //
        bIn = new ByteArrayInputStream(bytes);


        cIn = new CipherInputStream(bIn, in);


        try
        {
            DataInputStream dIn = new DataInputStream(cIn);

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Examples of javax.crypto.CipherInputStream

        byte[]      output)
        throws Exception
    {
        Key key;
        Cipher in, out;
        CipherInputStream cIn;
        CipherOutputStream cOut;
        ByteArrayInputStream bIn;
        ByteArrayOutputStream bOut;


        key = new SecretKeySpec(keyBytes, "Noekeon");


        in = Cipher.getInstance("Noekeon/ECB/NoPadding", "BC");
        out = Cipher.getInstance("Noekeon/ECB/NoPadding", "BC");


        try
        {
            out.init(Cipher.ENCRYPT_MODE, key);
        }
        catch (Exception e)
        {
            fail("Noekeon failed initialisation - " + e.toString(), e);
        }


        try
        {
            in.init(Cipher.DECRYPT_MODE, key);
        }
        catch (Exception e)
        {
            fail("Noekeoen failed initialisation - " + e.toString(), e);
        }


        //
        // encryption pass
        //
        bOut = new ByteArrayOutputStream();


        cOut = new CipherOutputStream(bOut, out);


        try
        {
            for (int i = 0; i != input.length / 2; i++)
            {
                cOut.write(input[i]);
            }
            cOut.write(input, input.length / 2, input.length - input.length / 2);
            cOut.close();
        }
        catch (IOException e)
        {
            fail("Noekeon failed encryption - " + e.toString(), e);
        }


        byte[]    bytes;


        bytes = bOut.toByteArray();


        if (!areEqual(bytes, output))
        {
            fail("Noekeon failed encryption - expected " + new String(Hex.encode(output)) + " got " + new String(Hex.encode(bytes)));
        }


        //
        // decryption pass
        //
        bIn = new ByteArrayInputStream(bytes);


        cIn = new CipherInputStream(bIn, in);


        try
        {
            DataInputStream dIn = new DataInputStream(cIn);

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Examples of javax.crypto.CipherInputStream

            else
            {
                cipher = this.makePBECipher(STORE_CIPHER, Cipher.DECRYPT_MODE, password, salt, iterationCount);
            }
    
            CipherInputStream  cIn = new CipherInputStream(dIn, cipher);
    
            DigestInputStream  dgIn = new DigestInputStream(cIn, new SHA1Digest());
    
            this.loadStore(dgIn);
    
            Digest  dig = dgIn.getDigest();
            int     digSize = dig.getDigestSize();
            byte[]  hash = new byte[digSize];
            byte[]  oldHash = new byte[digSize];
    
            dig.doFinal(hash, 0);
    
            for (int i = 0; i != digSize; i++)
            {
                oldHash[i] = (byte)cIn.read();
            }
    
            if (!this.isSameAs(hash, oldHash))
            {
                table.clear();

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Examples of javax.crypto.CipherInputStream


                    int     iterationCount = dIn.readInt();
                
                    Cipher      cipher = makePBECipher(KEY_CIPHER, Cipher.DECRYPT_MODE, password, salt, iterationCount);


                    CipherInputStream cIn = new CipherInputStream(dIn, cipher);


                    try
                    {
                        return decodeKey(new DataInputStream(cIn));
                    }
                    catch (Exception x)
                    {
                        bIn = new ByteArrayInputStream((byte[])obj);
                        dIn = new DataInputStream(bIn);
            
                        salt = new byte[dIn.readInt()];


                        dIn.readFully(salt);


                        iterationCount = dIn.readInt();


                        cipher = makePBECipher("Broken" + KEY_CIPHER, Cipher.DECRYPT_MODE, password, salt, iterationCount);


                        cIn = new CipherInputStream(dIn, cipher);


                        Key k = null;


                        try
                        {
                            k = decodeKey(new DataInputStream(cIn));
                        }
                        catch (Exception y)
                        {
                            bIn = new ByteArrayInputStream((byte[])obj);
                            dIn = new DataInputStream(bIn);
                
                            salt = new byte[dIn.readInt()];


                            dIn.readFully(salt);


                            iterationCount = dIn.readInt();


                            cipher = makePBECipher("Old" + KEY_CIPHER, Cipher.DECRYPT_MODE, password, salt, iterationCount);


                            cIn = new CipherInputStream(dIn, cipher);


                            k = decodeKey(new DataInputStream(cIn));
                        }


                        //

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Examples of javax.crypto.CipherInputStream

        byte[]      output)
        throws Exception
    {
        Key key;
        Cipher in, out;
        CipherInputStream cIn;
        CipherOutputStream cOut;
        ByteArrayInputStream bIn;
        ByteArrayOutputStream bOut;


        key = new SecretKeySpec(keyBytes, "SEED");


        in = Cipher.getInstance("SEED/ECB/NoPadding", "BC");
        out = Cipher.getInstance("SEED/ECB/NoPadding", "BC");


        try
        {
            out.init(Cipher.ENCRYPT_MODE, key);
        }
        catch (Exception e)
        {
            fail("SEED failed initialisation - " + e.toString(), e);
        }


        try
        {
            in.init(Cipher.DECRYPT_MODE, key);
        }
        catch (Exception e)
        {
            fail("SEED failed initialisation - " + e.toString(), e);
        }


        //
        // encryption pass
        //
        bOut = new ByteArrayOutputStream();


        cOut = new CipherOutputStream(bOut, out);


        try
        {
            for (int i = 0; i != input.length / 2; i++)
            {
                cOut.write(input[i]);
            }
            cOut.write(input, input.length / 2, input.length - input.length / 2);
            cOut.close();
        }
        catch (IOException e)
        {
            fail("SEED failed encryption - " + e.toString(), e);
        }


        byte[]    bytes;


        bytes = bOut.toByteArray();


        if (!areEqual(bytes, output))
        {
            fail("SEED failed encryption - expected " + new String(Hex.encode(output)) + " got " + new String(Hex.encode(bytes)));
        }


        //
        // decryption pass
        //
        bIn = new ByteArrayInputStream(bytes);


        cIn = new CipherInputStream(bIn, in);


        try
        {
            DataInputStream dIn = new DataInputStream(cIn);

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Examples of javax.crypto.CipherInputStream

        byte[]      output)
        throws Exception
    {
        Key key;
        Cipher in, out;
        CipherInputStream cIn;
        CipherOutputStream cOut;
        ByteArrayInputStream bIn;
        ByteArrayOutputStream bOut;


        key = new SecretKeySpec(keyBytes, "Camellia");


        in = Cipher.getInstance("Camellia/ECB/NoPadding", "BC");
        out = Cipher.getInstance("Camellia/ECB/NoPadding", "BC");


        try
        {
            out.init(Cipher.ENCRYPT_MODE, key);
        }
        catch (Exception e)
        {
            fail("Camellia failed initialisation - " + e.toString(), e);
        }


        try
        {
            in.init(Cipher.DECRYPT_MODE, key);
        }
        catch (Exception e)
        {
            fail("Camellia failed initialisation - " + e.toString(), e);
        }


        //
        // encryption pass
        //
        bOut = new ByteArrayOutputStream();


        cOut = new CipherOutputStream(bOut, out);


        try
        {
            for (int i = 0; i != input.length / 2; i++)
            {
                cOut.write(input[i]);
            }
            cOut.write(input, input.length / 2, input.length - input.length / 2);
            cOut.close();
        }
        catch (IOException e)
        {
            fail("Camellia failed encryption - " + e.toString(), e);
        }


        byte[]    bytes;


        bytes = bOut.toByteArray();


        if (!areEqual(bytes, output))
        {
            fail("Camellia failed encryption - expected " + new String(Hex.encode(output)) + " got " + new String(Hex.encode(bytes)));
        }


        //
        // decryption pass
        //
        bIn = new ByteArrayInputStream(bytes);


        cIn = new CipherInputStream(bIn, in);


        try
        {
            DataInputStream dIn = new DataInputStream(cIn);

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Examples of javax.crypto.CipherInputStream

    */
   public Object read(InputStream inputStream, Map metadata, int version) throws IOException, ClassNotFoundException
   {  
      if(cipher == null)
         throw new IllegalStateException("Cipher is null for algo="+ this.cipherAlgorithm);
      CipherInputStream cis = new CipherInputStream(inputStream,cipher);
      SerializationManager sm = SerializationStreamFactory.getManagerInstance(getSerializationType());
      ObjectInputStream ois = sm.createRegularInput(cis);
       
      Object obj = null;
      if(wrappedUnMarshaller != null)

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Examples of javax.crypto.CipherInputStream

    public Object unmarshal(Exchange exchange, InputStream encryptedStream) throws Exception {
        Object unmarshalled = null;
        if (encryptedStream != null) {
            byte[] iv = getInlinedInitializationVector(exchange, encryptedStream);
            Key key = getKey(exchange);
            CipherInputStream cipherStream = new CipherInputStream(encryptedStream, initializeCipher(DECRYPT_MODE, key, iv));


            ByteArrayOutputStream plaintextStream = new ByteArrayOutputStream(bufferSize);
            HMACAccumulator hmac = getMessageAuthenticationCode(key);
            byte[] buffer = new byte[bufferSize];
            hmac.attachStream(plaintextStream);
            int read;
            while ((read = cipherStream.read(buffer)) >= 0) {
                hmac.decryptUpdate(buffer, read);
            }
            hmac.validate();
            unmarshalled = plaintextStream.toByteArray();
        }

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