ccmtest.java

J2ME加密算法的代码!里面包括常用的算法

package org.bouncycastle.crypto.test;

import org.bouncycastle.crypto.InvalidCipherTextException;
import org.bouncycastle.crypto.engines.AESEngine;
import org.bouncycastle.crypto.engines.DESEngine;
import org.bouncycastle.crypto.modes.CCMBlockCipher;
import org.bouncycastle.crypto.params.CCMParameters;
import org.bouncycastle.crypto.params.KeyParameter;
import org.bouncycastle.util.encoders.Hex;
import org.bouncycastle.util.test.SimpleTest;

/**
 * First four test vectors from
 * NIST Special Publication 800-38C.
 */
public class CCMTest
    extends SimpleTest
{
    private byte[] K1 = Hex.decode("404142434445464748494a4b4c4d4e4f");
    private byte[] N1 = Hex.decode("10111213141516");
    private byte[] A1 = Hex.decode("0001020304050607");
    private byte[] P1 = Hex.decode("20212223");
    private byte[] C1 = Hex.decode("7162015b4dac255d");
    private byte[] T1 = Hex.decode("6084341b");
    
    private byte[] K2 = Hex.decode("404142434445464748494a4b4c4d4e4f");
    private byte[] N2 = Hex.decode("1011121314151617");
    private byte[] A2 = Hex.decode("000102030405060708090a0b0c0d0e0f");
    private byte[] P2 = Hex.decode("202122232425262728292a2b2c2d2e2f");
    private byte[] C2 = Hex.decode("d2a1f0e051ea5f62081a7792073d593d1fc64fbfaccd");
    private byte[] T2 = Hex.decode("7f479ffca464");
    
    private byte[] K3 = Hex.decode("404142434445464748494a4b4c4d4e4f");
    private byte[] N3 = Hex.decode("101112131415161718191a1b");
    private byte[] A3 = Hex.decode("000102030405060708090a0b0c0d0e0f10111213");
    private byte[] P3 = Hex.decode("202122232425262728292a2b2c2d2e2f3031323334353637");
    private byte[] C3 = Hex.decode("e3b201a9f5b71a7a9b1ceaeccd97e70b6176aad9a4428aa5484392fbc1b09951");
    private byte[] T3 = Hex.decode("67c99240c7d51048");
    
    private byte[] K4 = Hex.decode("404142434445464748494a4b4c4d4e4f");
    private byte[] N4 = Hex.decode("101112131415161718191a1b1c");
    private byte[] A4 = Hex.decode("000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f404142434445464748494a4b4c4d4e4f505152535455565758595a5b5c5d5e5f606162636465666768696a6b6c6d6e6f707172737475767778797a7b7c7d7e7f808182838485868788898a8b8c8d8e8f909192939495969798999a9b9c9d9e9fa0a1a2a3a4a5a6a7a8a9aaabacadaeafb0b1b2b3b4b5b6b7b8b9babbbcbdbebfc0c1c2c3c4c5c6c7c8c9cacbcccdcecfd0d1d2d3d4d5d6d7d8d9dadbdcdddedfe0e1e2e3e4e5e6e7e8e9eaebecedeeeff0f1f2f3f4f5f6f7f8f9fafbfcfdfeff");
    private byte[] P4 = Hex.decode("202122232425262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f");
    private byte[] C4 = Hex.decode("69915dad1e84c6376a68c2967e4dab615ae0fd1faec44cc484828529463ccf72b4ac6bec93e8598e7f0dadbcea5b");
    private byte[] T4 = Hex.decode("f4dd5d0ee404617225ffe34fce91");
    
    //
    // long data vector
    //
    private byte[] C5 = Hex.decode("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");
    private byte[] T5 = Hex.decode("5c768856796b627b13ec8641581b");
    
    public void performTest()
        throws Exception
    {
        CCMBlockCipher ccm = new CCMBlockCipher(new AESEngine());
        
        checkVectors(0, ccm, K1, 32, N1, A1, P1, T1, C1);
        checkVectors(1, ccm, K2, 48, N2, A2, P2, T2, C2);
        checkVectors(2, ccm, K3, 64, N3, A3, P3, T3, C3);
        
        //
        // 4 has a reduced associated text which needs to be replicated
        //
        byte[] a4 = new byte[65536]; // 524288 / 8
        
        for (int i = 0; i < a4.length; i += A4.length)
        {
            System.arraycopy(A4, 0, a4, i, A4.length);
        }
        
        checkVectors(3, ccm, K4, 112, N4, a4, P4, T4, C4);
        
        //
        // long data test
        //
        checkVectors(4, ccm, K4, 112, N4, A4, A4, T5, C5);
        
        //
        // exception tests
        //
        
        try
        {
            ccm.init(false, new CCMParameters(new KeyParameter(K1), 32, N2, A2));
            
            ccm.processPacket(C2, 0, C2.length);
            
            fail("invalid cipher text not picked up");
        }
        catch (InvalidCipherTextException e)
        {
            // expected
        }
        
        try
        {
            ccm = new CCMBlockCipher(new DESEngine());
            
            fail("incorrect block size not picked up");
        }
        catch (IllegalArgumentException e)
        {
            // expected
        }
    }

    private void checkVectors(
        int count,
        CCMBlockCipher ccm,
        byte[] k,
        int macSize,
        byte[] n,
        byte[] a,
        byte[] p,
        byte[] t,
        byte[] c)
        throws InvalidCipherTextException
    {
        ccm.init(true, new CCMParameters(new KeyParameter(k), macSize, n, a));

        byte[] enc = ccm.processPacket(p, 0, p.length);
        
        if (!areEqual(c, enc))
        {
            fail("encrypted stream fails to match in test " + count);
        }
        
        ccm.init(false, new CCMParameters(new KeyParameter(k), macSize, n, a));

        byte[] dec = ccm.processPacket(enc, 0, enc.length);
        
        if (!areEqual(p, dec))
        {
            fail("decrypted stream fails to match in test " + count);
        }
        
        if (!areEqual(t, ccm.getMac()))
        {
            System.out.println(new String(Hex.encode(ccm.getMac())));
            fail("MAC fails to match in test " + count);
        }
    }
    
    public String getName()
    {
        return "CCM";
    }

    public static void main(
        String[]    args)
    {
        runTest(new CCMTest());
    }
}