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

Example 6 with CFBBlockCipher

use of org.bouncycastle.crypto.modes.CFBBlockCipher in project XobotOS by xamarin.

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 // 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 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 // 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 7 with CFBBlockCipher

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

the class CamelliaCrypt method getCipher.

@Override
protected StreamBlockCipher getCipher(boolean isEncrypted) throws InvalidAlgorithmParameterException {
    CamelliaEngine engine = new CamelliaEngine();
    StreamBlockCipher cipher;
    if (_name.equals(CIPHER_CAMELLIA_128_CFB)) {
        cipher = new CFBBlockCipher(engine, getIVLength() * 8);
    } else if (_name.equals(CIPHER_CAMELLIA_192_CFB)) {
        cipher = new CFBBlockCipher(engine, getIVLength() * 8);
    } else if (_name.equals(CIPHER_CAMELLIA_256_CFB)) {
        cipher = new CFBBlockCipher(engine, getIVLength() * 8);
    } else {
        throw new InvalidAlgorithmParameterException(_name);
    }
    return cipher;
}

Example 8 with CFBBlockCipher

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

the class SeedCrypt method getCipher.

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