Examples of org.bouncycastle.crypto.AsymmetricBlockCipher.processBlock()

Class org.bouncycastle.crypto.AsymmetricBlockCipher

Examples of org.bouncycastle.crypto.AsymmetricBlockCipher.processBlock()

org.bouncycastle.crypto.AsymmetricBlockCipher.processBlock()
process the block of len bytes stored in in from offset inOff. @param in the input data @param inOff offset into the in array where the data starts @param len the length of the block to be processed. @return the resulting byte array of the encryption/decryption process. @exception InvalidCipherTextException data decrypts improperly. @exception DataLengthException the input data is too large for the cipher.


            c.init(true, pKey);
            
            byte[]  in = "hello world".getBytes();


            byte[]  out = c.processBlock(in, 0, in.length);
            
            pgpPrivKey = sKey.getSecretKey(pgpKeyID).extractPrivateKey(new BcPBESecretKeyDecryptorBuilder(new BcPGPDigestCalculatorProvider()).build(pass));
            
            c.init(false, keyConverter.getPrivateKey(pgpPrivKey));

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            pgpPrivKey = sKey.getSecretKey(pgpKeyID).extractPrivateKey(new BcPBESecretKeyDecryptorBuilder(new BcPGPDigestCalculatorProvider()).build(pass));
            
            c.init(false, keyConverter.getPrivateKey(pgpPrivKey));
            
            out = c.processBlock(out, 0, out.length);
            
            if (!areEqual(in, out))
            {
                fail("decryption failed.");
            }

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        try {
          AsymmetricKeyParameter publicKey = PublicKeyFactory.createKey(message.getSecretArray());
          cipher.init(SecurityHandler.ENCRYPT_MODE, publicKey);


          byte[] encodedSecret = cipher.processBlock(sharedSecret, 0, 16);
          byte[] encodedToken = cipher.processBlock(message.getVerifyTokenArray(), 0, 4);


          String streamCipher = VanillaConfiguration.ENCRYPT_STREAM_ALGORITHM.getString();
          String streamWrapper = VanillaConfiguration.ENCRYPT_STREAM_WRAPPER.getString();

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        try {
          AsymmetricKeyParameter publicKey = PublicKeyFactory.createKey(message.getSecretArray());
          cipher.init(SecurityHandler.ENCRYPT_MODE, publicKey);


          byte[] encodedSecret = cipher.processBlock(sharedSecret, 0, 16);
          byte[] encodedToken = cipher.processBlock(message.getVerifyTokenArray(), 0, 4);


          String streamCipher = VanillaConfiguration.ENCRYPT_STREAM_ALGORITHM.getString();
          String streamWrapper = VanillaConfiguration.ENCRYPT_STREAM_WRAPPER.getString();


          BufferedBlockCipher toServerCipher = SecurityHandler.getInstance().getSymmetricCipher(streamCipher, streamWrapper);

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    // encrypt data asymmetrically
    AsymmetricBlockCipher cipher = new RSAEngine();
    cipher = new PKCS1Encoding(cipher);
    cipher.init(true, keyPair.getPublic());
    byte[] rsaEncryptedData = cipher.processBlock(data, 0, data.length);


    Assert.assertFalse(Arrays.equals(data, rsaEncryptedData));


    // decrypt data asymmetrically
    cipher.init(false, keyPair.getPrivate());

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    Assert.assertFalse(Arrays.equals(data, rsaEncryptedData));


    // decrypt data asymmetrically
    cipher.init(false, keyPair.getPrivate());
    byte[] dataBack = cipher.processBlock(rsaEncryptedData, 0, rsaEncryptedData.length);


    assertTrue(Arrays.equals(data, dataBack));


    long stopTime = System.currentTimeMillis();
    long elapsedTime = stopTime - startTime;

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