. net 의 des 암호 화 를 자바 언어 로 변환 합 니 다.

package com.liutao;

import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;
import javax.crypto.spec.IvParameterSpec;

public class Des {

	//     
	public static String decrypt(String message, String key) throws Exception {

		byte[] bytesrc = convertHexString(message);
		Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
		DESKeySpec desKeySpec = new DESKeySpec(key.getBytes("UTF-8"));
		SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
		SecretKey secretKey = keyFactory.generateSecret(desKeySpec);
		IvParameterSpec iv = new IvParameterSpec(key.getBytes("UTF-8"));

		cipher.init(Cipher.DECRYPT_MODE, secretKey, iv);

		byte[] retByte = cipher.doFinal(bytesrc);
		return new String(retByte);
	}

	public static byte[] encrypt(String message, String key) throws Exception {
		Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");

		DESKeySpec desKeySpec = new DESKeySpec(key.getBytes("UTF-8"));

		SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
		SecretKey secretKey = keyFactory.generateSecret(desKeySpec);
		IvParameterSpec iv = new IvParameterSpec(key.getBytes("UTF-8"));
		cipher.init(Cipher.ENCRYPT_MODE, secretKey, iv);

		return cipher.doFinal(message.getBytes("UTF-8"));
	}

	public static byte[] convertHexString(String ss) {
		byte digest[] = new byte[ss.length() / 2];
		for (int i = 0; i < digest.length; i++) {
			String byteString = ss.substring(2 * i, 2 * i + 2);
			int byteValue = Integer.parseInt(byteString, 16);
			digest[i] = (byte) byteValue;
		}

		return digest;
	}

	public static void main(String[] args) throws Exception {
		String key = "19662A31";
		String value = "96e79218965eb72c92a549dd5a330112";
		String jiami = java.net.URLEncoder.encode(value, "utf-8").toLowerCase();

		System.out.println("    :" + jiami);
		String a = toHexString(encrypt(jiami, key)).toUpperCase();

		System.out.println("       :" + a);
		//String b = java.net.URLDecoder.decode(decrypt(a, key), "utf-8");
		//System.out.println("      :" + b);

	}

	public static String toHexString(byte b[]) {
		StringBuffer hexString = new StringBuffer();
		for (int i = 0; i < b.length; i++) {
			String plainText = Integer.toHexString(0xff & b[i]);
			if (plainText.length() < 2)
				plainText = "0" + plainText;
			hexString.append(plainText);
		}

		return hexString.toString();
	}

}