Examples with CFBBlockCipher org.bouncycastle.crypto.modes.CFBBlockCipher used on opensource projects

Example 1 with CFBBlockCipher

use of org.bouncycastle.crypto.modes.CFBBlockCipher in project robovm by robovm.

the class BaseBlockCipher method engineSetMode.

protected void engineSetMode(String mode) throws NoSuchAlgorithmException {
    modeName = Strings.toUpperCase(mode);
    if (modeName.equals("ECB")) {
        ivLength = 0;
        cipher = new BufferedGenericBlockCipher(baseEngine);
    } else if (modeName.equals("CBC")) {
        ivLength = baseEngine.getBlockSize();
        cipher = new BufferedGenericBlockCipher(new CBCBlockCipher(baseEngine));
    } else if (modeName.startsWith("OFB")) {
        ivLength = baseEngine.getBlockSize();
        if (modeName.length() != 3) {
            int wordSize = Integer.parseInt(modeName.substring(3));
            cipher = new BufferedGenericBlockCipher(new OFBBlockCipher(baseEngine, wordSize));
        } else {
            cipher = new BufferedGenericBlockCipher(new OFBBlockCipher(baseEngine, 8 * baseEngine.getBlockSize()));
        }
    } else if (modeName.startsWith("CFB")) {
        ivLength = baseEngine.getBlockSize();
        if (modeName.length() != 3) {
            int wordSize = Integer.parseInt(modeName.substring(3));
            cipher = new BufferedGenericBlockCipher(new CFBBlockCipher(baseEngine, wordSize));
        } else {
            cipher = new BufferedGenericBlockCipher(new CFBBlockCipher(baseEngine, 8 * baseEngine.getBlockSize()));
        }
    } else // END android-removed
    if (modeName.startsWith("SIC")) {
        ivLength = baseEngine.getBlockSize();
        if (ivLength < 16) {
            throw new IllegalArgumentException("Warning: SIC-Mode can become a twotime-pad if the blocksize of the cipher is too small. Use a cipher with a block size of at least 128 bits (e.g. AES)");
        }
        cipher = new BufferedGenericBlockCipher(new BufferedBlockCipher(new SICBlockCipher(baseEngine)));
    } else if (modeName.startsWith("CTR")) {
        ivLength = baseEngine.getBlockSize();
        cipher = new BufferedGenericBlockCipher(new BufferedBlockCipher(new SICBlockCipher(baseEngine)));
    } else // END android-removed
    if (modeName.startsWith("CTS")) {
        ivLength = baseEngine.getBlockSize();
        cipher = new BufferedGenericBlockCipher(new CTSBlockCipher(new CBCBlockCipher(baseEngine)));
    } else if (modeName.startsWith("CCM")) {
        ivLength = baseEngine.getBlockSize();
        cipher = new AEADGenericBlockCipher(new CCMBlockCipher(baseEngine));
    } else // END android-removed
    if (modeName.startsWith("GCM")) {
        ivLength = baseEngine.getBlockSize();
        cipher = new AEADGenericBlockCipher(new GCMBlockCipher(baseEngine));
    } else {
        throw new NoSuchAlgorithmException("can't support mode " + mode);
    }
}

Example 2 with CFBBlockCipher

use of org.bouncycastle.crypto.modes.CFBBlockCipher in project ProxProx by GoMint.

the class EncryptionHandler method createCipher.

private BufferedBlockCipher createCipher(boolean encryptor, byte[] key, byte[] iv) {
    BufferedBlockCipher cipher = new BufferedBlockCipher(new CFBBlockCipher(new AESFastEngine(), 8));
    cipher.init(encryptor, new ParametersWithIV(new KeyParameter(key), iv));
    return cipher;
}

Example 3 with CFBBlockCipher

use of org.bouncycastle.crypto.modes.CFBBlockCipher in project rxlib by RockyLOMO.

the class BlowFishCrypt method getCipher.

@Override
protected StreamBlockCipher getCipher(boolean isEncrypted) throws InvalidAlgorithmParameterException {
    BlowfishEngine engine = new BlowfishEngine();
    StreamBlockCipher cipher;
    if (_name.equals(CIPHER_BLOWFISH_CFB)) {
        cipher = new CFBBlockCipher(engine, getIVLength() * 8);
    } else {
        throw new InvalidAlgorithmParameterException(_name);
    }
    return cipher;
}

Example 4 with CFBBlockCipher

use of org.bouncycastle.crypto.modes.CFBBlockCipher in project rxlib by RockyLOMO.

the class AesCrypt method getCipher.

@Override
protected StreamBlockCipher getCipher(boolean isEncrypted) throws InvalidAlgorithmParameterException {
    AESFastEngine engine = new AESFastEngine();
    StreamBlockCipher cipher;
    if (_name.equals(CIPHER_AES_128_CFB)) {
        cipher = new CFBBlockCipher(engine, getIVLength() * 8);
    } else if (_name.equals(CIPHER_AES_192_CFB)) {
        cipher = new CFBBlockCipher(engine, getIVLength() * 8);
    } else if (_name.equals(CIPHER_AES_256_CFB)) {
        cipher = new CFBBlockCipher(engine, getIVLength() * 8);
    } else if (_name.equals(CIPHER_AES_128_OFB)) {
        cipher = new OFBBlockCipher(engine, getIVLength() * 8);
    } else if (_name.equals(CIPHER_AES_192_OFB)) {
        cipher = new OFBBlockCipher(engine, getIVLength() * 8);
    } else if (_name.equals(CIPHER_AES_256_OFB)) {
        cipher = new OFBBlockCipher(engine, getIVLength() * 8);
    } else {
        throw new InvalidAlgorithmParameterException(_name);
    }
    return cipher;
}

Example 5 with CFBBlockCipher

use of org.bouncycastle.crypto.modes.CFBBlockCipher in project keepass2android by PhilippC.

the class JCEBlockCipher method engineSetMode.

protected void engineSetMode(String mode) throws NoSuchAlgorithmException {
    modeName = Strings.toUpperCase(mode);
    if (modeName.equals("ECB")) {
        ivLength = 0;
        cipher = new BufferedGenericBlockCipher(baseEngine);
    } else if (modeName.equals("CBC")) {
        ivLength = baseEngine.getBlockSize();
        cipher = new BufferedGenericBlockCipher(new CBCBlockCipher(baseEngine));
    } else if (modeName.startsWith("OFB")) {
        ivLength = baseEngine.getBlockSize();
        if (modeName.length() != 3) {
            int wordSize = Integer.parseInt(modeName.substring(3));
            cipher = new BufferedGenericBlockCipher(new OFBBlockCipher(baseEngine, wordSize));
        } else {
            cipher = new BufferedGenericBlockCipher(new OFBBlockCipher(baseEngine, 8 * baseEngine.getBlockSize()));
        }
    } else if (modeName.startsWith("CFB")) {
        ivLength = baseEngine.getBlockSize();
        if (modeName.length() != 3) {
            int wordSize = Integer.parseInt(modeName.substring(3));
            cipher = new BufferedGenericBlockCipher(new CFBBlockCipher(baseEngine, wordSize));
        } else {
            cipher = new BufferedGenericBlockCipher(new CFBBlockCipher(baseEngine, 8 * baseEngine.getBlockSize()));
        }
    } else /*
        else if (modeName.startsWith("PGP"))
        {
            boolean inlineIV = modeName.equalsIgnoreCase("PGPCFBwithIV");

            ivLength = baseEngine.getBlockSize();
            cipher = new BufferedGenericBlockCipher(
                new PGPCFBBlockCipher(baseEngine, inlineIV));
        }
        else if (modeName.equalsIgnoreCase("OpenPGPCFB"))
        {
            ivLength = 0;
            cipher = new BufferedGenericBlockCipher(
                new OpenPGPCFBBlockCipher(baseEngine));
        }
        else if (modeName.startsWith("SIC"))
        {
            ivLength = baseEngine.getBlockSize();
            if (ivLength < 16)
            {
                throw new IllegalArgumentException("Warning: SIC-Mode can become a twotime-pad if the blocksize of the cipher is too small. Use a cipher with a block size of at least 128 bits (e.g. AES)");
            }
            cipher = new BufferedGenericBlockCipher(new BufferedBlockCipher(
                        new SICBlockCipher(baseEngine)));
        }
        else if (modeName.startsWith("CTR"))
        {
            ivLength = baseEngine.getBlockSize();
            cipher = new BufferedGenericBlockCipher(new BufferedBlockCipher(
                        new SICBlockCipher(baseEngine)));
        }
        else if (modeName.startsWith("GOFB"))
        {
            ivLength = baseEngine.getBlockSize();
            cipher = new BufferedGenericBlockCipher(new BufferedBlockCipher(
                        new GOFBBlockCipher(baseEngine)));
        }
        else if (modeName.startsWith("CTS"))
        {
            ivLength = baseEngine.getBlockSize();
            cipher = new BufferedGenericBlockCipher(new CTSBlockCipher(new CBCBlockCipher(baseEngine)));
        }
        else if (modeName.startsWith("CCM"))
        {
            ivLength = baseEngine.getBlockSize();
            cipher = new AEADGenericBlockCipher(new CCMBlockCipher(baseEngine));
        }
        else if (modeName.startsWith("EAX"))
        {
            ivLength = baseEngine.getBlockSize();
            cipher = new AEADGenericBlockCipher(new EAXBlockCipher(baseEngine));
        }
        else if (modeName.startsWith("GCM"))
        {
            ivLength = baseEngine.getBlockSize();
            cipher = new AEADGenericBlockCipher(new GCMBlockCipher(baseEngine));
        }
        */
    {
        throw new NoSuchAlgorithmException("can't support mode " + mode);
    }
}