Examples of javax.crypto.spec.IvParameterSpec

javax.crypto.spec.IvParameterSpec
The algorithm parameter specification for an initialization vector.

        {
            keyBytes[k++] = keyBytes[j++];
        }


        final SecretKey key = new SecretKeySpec(keyBytes, "DESede");
        final IvParameterSpec iv = new IvParameterSpec(new byte[8]);
        final Cipher decipher = Cipher.getInstance("DESede/CBC/PKCS5Padding");
        decipher.init(Cipher.DECRYPT_MODE, key, iv);


        // final byte[] encData = new
        // sun.misc.BASE64Decoder().decodeBuffer(message);

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        try
        {
            Cipher cipher = Cipher.getInstance( "AES/CTS/NoPadding" );
            SecretKey key = new SecretKeySpec( keyBytes, "AES" );


            AlgorithmParameterSpec paramSpec = new IvParameterSpec( iv );


            if ( isEncrypt )
            {
                cipher.init( Cipher.ENCRYPT_MODE, key, paramSpec );
            }

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        try
        {
            Cipher cipher = Cipher.getInstance( "DES/CBC/NoPadding" );
            SecretKey key = new SecretKeySpec( keyBytes, "DES" );


            AlgorithmParameterSpec paramSpec = new IvParameterSpec( keyBytes );


            cipher.init( Cipher.ENCRYPT_MODE, key, paramSpec );


            byte[] result = cipher.doFinal( data );

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        try
        {
            Cipher cipher = Cipher.getInstance( "DESede/CBC/NoPadding" );
            SecretKey key = new SecretKeySpec( keyBytes, "DESede" );


            AlgorithmParameterSpec paramSpec = new IvParameterSpec( iv );


            if ( isEncrypt )
            {
                cipher.init( Cipher.ENCRYPT_MODE, key, paramSpec );
            }

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    KeySpec keySpec = new PBEKeySpec(passCode.toCharArray(), saltValue.getBytes(), 1024, 128);
    SecretKey secretKey = factory.generateSecret(keySpec);


    Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    SecretKeySpec key = new SecretKeySpec(secretKey.getEncoded(), "AES");
    IvParameterSpec parameterSpec = new IvParameterSpec(iv);
    cipher.init(mode, key, parameterSpec);
    return cipher;
  }

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            Mac mac = Mac.getInstance(macAlgorithm);
            mac.init(macSecretKey);
            Cipher cipher = Cipher.getInstance(algorithm + "/" + algorithmParams);
            if (iv != null)
            {
                IvParameterSpec ivSpec = new IvParameterSpec(iv);
                cipher.init(Cipher.ENCRYPT_MODE, secretKey, ivSpec);
            }
            else
            {
                cipher.init(Cipher.ENCRYPT_MODE, secretKey);

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            mac.init(macSecretKey);
            Cipher cipher = Cipher.getInstance(algorithm + "/"
                    + algorithmParams);
            if (iv != null)
            {
                IvParameterSpec ivSpec = new IvParameterSpec(iv);
                cipher.init(Cipher.DECRYPT_MODE, secretKey, ivSpec);
            }
            else
            {
                cipher.init(Cipher.DECRYPT_MODE, secretKey);

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            // keep local to avoid threading issue
            Cipher cipher = Cipher.getInstance(algorithm + "/"
                    + algorithmParams);
            if (iv != null)
            {
                IvParameterSpec ivSpec = new IvParameterSpec(iv);
                cipher.init(mode, secretKey, ivSpec);
            }
            else
            {
                cipher.init(mode, secretKey);

View Full Code Here

    }


    // return a cipher for a key - DESede/CBC/NoPadding IV = 0
    protected Cipher getCipher(SecretKey key, int mode) {
        byte[] zeros = { 0, 0, 0, 0, 0, 0, 0, 0 };
        IvParameterSpec iv = new IvParameterSpec(zeros);


        // create the Cipher - DESede/CBC/NoPadding
        Cipher mwkCipher = null;
        try {
            mwkCipher = Cipher.getInstance("DESede/CBC/NoPadding");

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    KeySpec keySpec = new PBEKeySpec(passCode.toCharArray(), saltValue.getBytes(), 1024, 128);
    SecretKey secretKey = factory.generateSecret(keySpec);


    Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    SecretKeySpec key = new SecretKeySpec(secretKey.getEncoded(), "AES");
    IvParameterSpec parameterSpec = new IvParameterSpec(iv);
    cipher.init(mode, key, parameterSpec);
    return cipher;
  }

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