BlowFishで暗号化・復号化

Exception握りつぶしてたり作り途中ですけど、BlowFishで暗号化・復号化できました。かなり簡単！余計なメソッドたくさんありますけど、暗号化・復号化してるのはdoCipherメソッドです。

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;

import org.apache.log4j.Logger;

public class BlowFishUtil {

    private Logger logger = Logger.getLogger(BlowFishUtil.class);

    private final String ALGORITHM = "Blowfish";
    private String passPhrase;

    public BlowFishUtil(String passPhrase) {
        this.passPhrase = passPhrase;
    }

    public String decrypt(String value) {
        return this.decrypt(value.getBytes());
    }

    public String decrypt(byte value) {

        String result = null;
        try {
            byte decrypted = this.doCipher(Cipher.DECRYPT_MODE, value);
            result = new String(decrypted);

        } catch (Exception e) {
            this.logger.fatal("", e);
        }
        return result;
    }

    public byte encrypt(String value) {
        return encrypt(value.getBytes());
    }

    public byte encrypt(byte value) {

        byte result = null;
        try {
            result = this.doCipher(Cipher.ENCRYPT_MODE, value);
        } catch (Exception e) {
            this.logger.fatal("", e);
        }
        return result;
    }

    private byte doCipher(int mode, byte value) throws Exception {

        SecretKeySpec keySpec =
            new SecretKeySpec(this.passPhrase.getBytes(), this.ALGORITHM);

        Cipher cipher = Cipher.getInstance(this.ALGORITHM);
        cipher.init(mode, keySpec);
        byte[] result = cipher.doFinal(value);

        return result;
    }
}