Examples of org.bouncycastle.crypto.engines.AESFastEngine

org.bouncycastle.crypto.engines.AESFastEngine
nist.gov/encryption/aes/">http://csrc.nist.gov/encryption/aes/. This implementation is based on optimizations from Dr. Brian Gladman's paper and C code at http://fp.gladman.plus.com/cryptography_technology/rijndael/ There are three levels of tradeoff of speed vs memory Because java has no preprocessor, they are written as three separate classes from which to choose The fastest uses 8Kbytes of static tables to precompute round calculations, 4 256 word tables for encryption and 4 for decryption. The middle performance version uses only one 256 word table for each, for a total of 2Kbytes, adding 12 rotate operations per round to compute the values contained in the other tables from the contents of the first The slowest version uses no static tables at all and computes the values in each round
This file contains the fast version with 8Kbytes of static tables for round precomputation

    static public class OFB
        extends JCEBlockCipher
    {
        public OFB()
        {
            super(new BufferedBlockCipher(new OFBBlockCipher(new AESFastEngine(), 128)), 128);
        }

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    static public class AESCBC
        extends JCEBlockCipher
    {
        public AESCBC()
        {
            super(new CBCBlockCipher(new AESFastEngine()), 128);
        }

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    static public class AESCFB
        extends JCEBlockCipher
    {
        public AESCFB()
        {
            super(new CFBBlockCipher(new AESFastEngine(), 128), 128);
        }

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    static public class AESOFB
        extends JCEBlockCipher
    {
        public AESOFB()
        {
            super(new OFBBlockCipher(new AESFastEngine(), 128), 128);
        }

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    static public class PBEWithAESCBC
        extends JCEBlockCipher
    {
        public PBEWithAESCBC()
        {
            super(new CBCBlockCipher(new AESFastEngine()));
        }

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public class AESCipher {
    private PaddedBufferedBlockCipher bp;
    
    /** Creates a new instance of AESCipher */
    public AESCipher(boolean forEncryption, byte[] key, byte[] iv) {
        BlockCipher aes = new AESFastEngine();
        BlockCipher cbc = new CBCBlockCipher(aes);
        bp = new PaddedBufferedBlockCipher(cbc);
        KeyParameter kp = new KeyParameter(key);
        ParametersWithIV piv = new ParametersWithIV(kp, iv);
        bp.init(forEncryption, piv);

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public class AESCipherCBCnoPad {
    private BlockCipher cbc;
    
    /** Creates a new instance of AESCipher */
    public AESCipherCBCnoPad(boolean forEncryption, byte[] key) {
        BlockCipher aes = new AESFastEngine();
        cbc = new CBCBlockCipher(aes);
        KeyParameter kp = new KeyParameter(key);
        cbc.init(forEncryption, kp);
    }

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            encKey = null;
            saltKey = null;
            break;


        case SRTPPolicy.AESF8_ENCRYPTION:
            cipherF8 = new AESFastEngine();


        case SRTPPolicy.AESCM_ENCRYPTION:
            cipher = new AESFastEngine();
            encKey = new byte[this.policy.getEncKeyLength()];
            saltKey = new byte[this.policy.getSaltKeyLength()];    
            break;


        case SRTPPolicy.TWOFISHF8_ENCRYPTION:

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    static public class AES
        extends JCEBlockCipher
    {
        public AES()
        {
            super(new AESFastEngine());
        }

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    static public class AESCBC
        extends JCEBlockCipher
    {
        public AESCBC()
        {
            super(new CBCBlockCipher(new AESFastEngine()), 128);
        }

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