encrypt DES - Java Security

Java examples for Security:DES

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Description

encrypt DES

Demo Code


//package com.java2s;
import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;

public class Main {
    private static byte[] iv = { 1, 2, 3, 4, 5, 6, 7, 8 };

    public static String encryptDES(String encryptString, String encryptKey)
            throws Exception {
        IvParameterSpec zeroIv = new IvParameterSpec(iv);
        SecretKeySpec key = new SecretKeySpec(encryptKey.getBytes(), "DES");
        Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
        cipher.init(Cipher.ENCRYPT_MODE, key, zeroIv);
        byte[] encryptedData = cipher.doFinal(encryptString.getBytes());

        //            return Base64.encode(encryptedData);
        return byte2HexString(encryptedData);
    }//  w w  w  . j av a  2s  .  c o m

    public static String byte2HexString(byte[] b) {
        StringBuffer sb = new StringBuffer();
        int length = b.length;
        for (int i = 0; i < b.length; i++) {
            String stmp = Integer.toHexString(b[i] & 0xff);
            if (stmp.length() == 1)
                sb.append("0" + stmp);
            else
                sb.append(stmp);
        }
        return sb.toString();
    }
}

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