`
kxlele
  • 浏览: 10117 次
  • 性别: Icon_minigender_1
  • 来自: 郑州
社区版块
存档分类
最新评论

常见的MAC算法(PBOC_3DES_MAC、ANSI X9.9MAC算法、ANSI x9.19算法)

    博客分类:
  • JAVA
阅读更多
个人总结的常用mac算法,附上源码,完全使用java原生写法,效率极高

public final class Pboc3DesMACUtils {
	
	public static final byte[] ZERO_IVC = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0 };
	/**
	 * 计算MAC(hex) PBOC_3DES_MAC(符合ISO9797Alg3Mac标准)
	 * (16的整数补8000000000000000) 前n-1组使用单长密钥DES 使用密钥是密钥的左8字节) 最后1组使用双长密钥3DES (使用全部16字节密钥)
	 * 
	 * 算法步骤:初始数据为D,初始向量为I,3DES秘钥为K0,秘钥低8字节DES秘钥K1;
	 * 1、数据D分组并且填充:将字节数组D进行分组,每组8个字节,分组编号从0开始,分别为D0...Dn;最后一个分组不满8字节的,先填充一个字节80,后续全部填充00,满8字节的,新增一个8字节分组(80000000 00000000);
	 * 2、进行des循环加密:(1)D0和初始向量I进行按位异或得到结果O0;(2)使用秘钥K1,DES加密结果O0得到结果I1,将I1和D1按位异或得到结果D1;(3)循环第二步骤得到结果Dn;
	 * 3、将Dn使用16字节秘钥K0进行3DES加密,得到的结果就是我们要的MAC。
	 * @param data 带计算的数据
	 * @param key 16字节密钥
	 * @param icv 算法向量
	 * @return mac签名
	 * @throws Exception
	 */
	public static byte[] calculatePboc3desMAC(byte[] data, byte[] key, byte[] icv) throws Exception {
		
		if (key == null || data == null) throw new RuntimeException("data or key is null.");
		if(key.length != 16) throw new RuntimeException("key length is not 16 byte.");
		
		byte[] leftKey = new byte[8];
		System.arraycopy(key, 0, leftKey, 0, 8);
		
		// 拆分数据(8字节块/Block)
		final int dataLength = data.length;
		final int blockCount = dataLength / 8 + 1;
		final int lastBlockLength = dataLength % 8;
		
		byte[][] dataBlock = new byte[blockCount][8];
		for (int i = 0; i < blockCount; i++) {
			int copyLength = i == blockCount - 1 ? lastBlockLength : 8;
			System.arraycopy(data, i * 8, dataBlock[i], 0, copyLength);
		}
		dataBlock[blockCount - 1][lastBlockLength] = (byte) 0x80;
		
		byte[] desXor = DesUtils.xOr(dataBlock[0], icv);
		for (int i = 1; i < blockCount; i++) {
			byte[] des = DesUtils.encryptByDesCbc(desXor, leftKey);
			desXor = DesUtils.xOr(dataBlock[i], des);
		}
		desXor = DesUtils.encryptBy3DesCbc(desXor, key);
		return desXor;
	}
}




import java.security.GeneralSecurityException;

/**
 * 关键字:Java MAC计算 
 * 
 * 为了检查通讯报文是否被篡改,常需要在报文中加上一个MAC(Message Authentication Code,报文校验码)。
 * 
 * 在 JDK 1.4里,已包含一个 Mac 类(javax.crypto.Mac),可以生成MAC。 但它是参照HMAC(Hash-based Message Authentication Code,基于散列的消息验证代码)实现的。 有时,需要采用ANSI-X9.9算法计算MAC。
 * 
 * 1. 算法描述 参与ANSI X9.9 MAC计算的数据主要由三部分产生:初始数据、原始数据、补位数据。 
 * 1) 算法定义:采用DEC CBC(zeroICV)或ECB算法 
 * 2) 初始数据:0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 
 * 3) 原始数据: 
 * 4) * 补位数据:若原始数据不是8的倍数,则右补齐0x00;若原始数据位8的整数倍,则不用补齐0x00。
 * 5) 密钥: MAC密钥
 * 
 * MAC的产生由以下方式完成:(最后一组数据长度若不足8的倍数,则右补齐0x00;若数据长度为8的整数倍,则无需补充0x00) 
 * 初始数据 BLOCK #1 BLOCK #2 BLOCK #3 ... BLOCK #N | | | | | +-----> XOR +---> XOR +---> XOR +---> XOR | | | | | | | DES
 * ---+ DES ---+ DES ---+ DES ---> MAC | | | | KEY KEY KEY KEY
 * 
 * 返回 -- 加密后的缓冲区
 */
public class ANSIMacUtils {
	
	/**
	 * ANSI X9.9MAC算法  <br/>
	 * (1) ANSI X9.9MAC算法只使用单倍长密钥。  <br/>
	 * (2)  MAC数据先按8字节分组,表示为D0~Dn,如果Dn不足8字节时,尾部以字节00补齐。 <br/>
	 * (3) 用MAC密钥加密D0,加密结果与D1异或作为下一次的输入。 <br/>
	 * (4) 将上一步的加密结果与下一分组异或,然后再用MAC密钥加密。<br/>
	 * (5) 直至所有分组结束,取最后结果的左半部作为MAC。<br/>
	 * 采用x9.9算法计算MAC (Count MAC by ANSI-x9.9).
	 * 
	 * @param key  8字节密钥数据
	 * @param data 待计算的缓冲区
	 * @throws GeneralSecurityException 
	 */
	public static byte[] calculateANSIX9_9MAC(byte[] key, byte[] data) throws GeneralSecurityException {
		
		final int dataLength = data.length;
		final int lastLength = dataLength % 8;
		final int lastBlockLength = lastLength == 0 ? 8 : lastLength;
		final int blockCount = dataLength / 8 + (lastLength > 0 ? 1 : 0);
		
		// 拆分数据(8字节块/Block)
		byte[][] dataBlock = new byte[blockCount][8];
		for (int i = 0; i < blockCount; i++) {
			int copyLength = i == blockCount - 1 ? lastBlockLength : 8;
			System.arraycopy(data, i * 8, dataBlock[i], 0, copyLength);
		}
		
		byte[] desXor = new byte[8];
		for (int i = 0; i < blockCount; i++) {
			byte[] tXor = DesUtils.xOr(desXor, dataBlock[i]);
			desXor = DesUtils.encryptByDesEcb(tXor, key); // DES加密
		}
		return desXor;
	}
	
	/**
	 * 采用ANSI x9.19算法计算MAC (Count MAC by ANSI-x9.19).<br/>
	 * 将ANSI X9.9的结果做如下计算<br/>
	 * (6) 用MAC密钥右半部解密(5)的结果。 <br/>
	 * (7) 用MAC密钥左半部加密(6)的结果。<br/>
	 * (8) 取(7)的结果的左半部作为MAC。<br/>
	 * @param key  16字节密钥数据
	 * @param data 待计算的缓冲区
	 * @throws GeneralSecurityException 
	 */
	public static byte[] calculateANSIX9_19MAC(byte[] key, byte[] data) throws GeneralSecurityException {
		if (key == null || data == null)
			return null;
		
		if (key.length != 16) {
			throw new RuntimeException("秘钥长度错误.");
		}
		
		byte[] keyLeft = new byte[8];
		byte[] keyRight = new byte[8];
		System.arraycopy(key, 0, keyLeft, 0, 8);
		System.arraycopy(key, 8, keyRight, 0, 8);
		
		byte[] result99 = calculateANSIX9_9MAC(keyLeft, data);
		
		byte[] resultTemp = DesUtils.decryptByDesEcb(result99, keyRight);
		return DesUtils.encryptByDesEcb(resultTemp, keyLeft);
	}

}




import java.security.GeneralSecurityException;
import java.security.SecureRandom;

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

public final class DesUtils {
	
	public static final byte[] ZERO_IVC = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0 };
	
	/**
	 * 生成秘钥
	 * @return 16字节3des秘钥
	 * @throws GeneralSecurityException
	 */
	public static byte[] create3DESKey() throws GeneralSecurityException { 
		KeyGenerator kg = KeyGenerator.getInstance("DESede");
		kg.init(112);//must be equal to 112 or 168
		byte[] key24 =  kg.generateKey().getEncoded();
		byte[] result = new byte[16];
		System.arraycopy(key24, 0, result, 0, 16);
		return result;
	}

	/**
	 * 3DES加密cbc模式
	 * @param content 待加密数据
	 * @param key 秘钥
	 * @param ivb 向量
	 * @return 加密结果
	 * @throws GeneralSecurityException
	 */
	public static byte[] encryptBy3DesCbc(byte[] content, byte[] key, byte[] ivb) throws GeneralSecurityException { 
		byte[] _3deskey = new byte[24];
		System.arraycopy(key, 0, _3deskey, 0, 16);
		System.arraycopy(key, 0, _3deskey, 16, 8);
		
        Cipher cipher = Cipher.getInstance("DESede/CBC/NoPadding");  
        SecretKey secureKey = new SecretKeySpec(_3deskey, "DESede");  
        IvParameterSpec iv = new IvParameterSpec(ivb);
        cipher.init(Cipher.ENCRYPT_MODE, secureKey, iv);  
        return cipher.doFinal(content);  
    }
	/**
	 * 3DES解密cbc模式
	 * @param content 待解密数据
	 * @param key 秘钥
	 * @param ivb 向量
	 * @return 解密结果
	 * @throws GeneralSecurityException
	 */
	public static byte[] decryptBy3DesCbc(byte[] content, byte[] key, byte[] ivb) throws GeneralSecurityException { 
		byte[] _3deskey = new byte[24];
		System.arraycopy(key, 0, _3deskey, 0, 16);
		System.arraycopy(key, 0, _3deskey, 16, 8);
		
		Cipher cipher = Cipher.getInstance("DESede/CBC/NoPadding");  
		SecretKey secureKey = new SecretKeySpec(_3deskey, "DESede");  
		IvParameterSpec iv = new IvParameterSpec(ivb);
		cipher.init(Cipher.DECRYPT_MODE, secureKey, iv);  
		return cipher.doFinal(content);  
	}
	/**
	 * 3DES加密cbc模式,默认向量
	 * @param content 待加密数据
	 * @param key 秘钥
	 * @return 加密结果
	 * @throws GeneralSecurityException
	 */
	public static byte[] encryptBy3DesCbc(byte[] content, byte[] key) throws GeneralSecurityException { 
		return encryptBy3DesCbc(content, key, ZERO_IVC);
	}
	
	/**
	 * 3DES解密cbc模式,默认向量
	 * @param content 带解密数据
	 * @param key 秘钥
	 * @return 解密结果
	 * @throws GeneralSecurityException
	 */
	public static byte[] decryptBy3DesCbc(byte[] content, byte[] key) throws GeneralSecurityException {
		return decryptBy3DesCbc(content, key, ZERO_IVC);
	}

	/**
	 * 3DES加密Ecb模式
	 * @param content 待加密数据
	 * @param key 加密秘钥
	 * @return 加密结果
	 * @throws GeneralSecurityException
	 */
	public static byte[] encryptBy3DesEcb(byte[] content, byte[] key) throws GeneralSecurityException {
		byte[] _3deskey = new byte[24];
		System.arraycopy(key, 0, _3deskey, 0, 16);
		System.arraycopy(key, 0, _3deskey, 16, 8);
		
		Cipher cipher = Cipher.getInstance("DESede/ECB/NoPadding");  
		SecretKey secureKey = new SecretKeySpec(_3deskey, "DESede");  
		cipher.init(Cipher.ENCRYPT_MODE, secureKey);  
		return cipher.doFinal(content);  
	}
	
	/**
	 * 3DES解密Ecb模式
	 * @param content 待解密数据
	 * @param key 秘钥
	 * @return 解密结果
	 * @throws GeneralSecurityException
	 */
	public static byte[] decryptBy3DesEcb(byte[] content, byte[] key) throws GeneralSecurityException {
		byte[] _3deskey = new byte[24];
		System.arraycopy(key, 0, _3deskey, 0, 16);
		System.arraycopy(key, 0, _3deskey, 16, 8);
		
		Cipher cipher = Cipher.getInstance("DESede/ECB/NoPadding");  
		SecretKey secureKey = new SecretKeySpec(_3deskey, "DESede");  
		cipher.init(Cipher.DECRYPT_MODE, secureKey);  
		return cipher.doFinal(content);  
	}

	/**
	 * des的cbc模式加密算法
	 * @param content 待加密数据
	 * @param key 密钥
	 * @return 加密结果
	 * @throws GeneralSecurityException
	 */
	public static byte[] encryptByDesCbc(byte[] content, byte[] key) throws GeneralSecurityException {
		return encryptByDesCbc(content, key, ZERO_IVC);
	}
	/**
	 * des的cbc模式解密算法
	 * @param content 待解密数据
	 * @param key 密钥
	 * @return 解密结果
	 * @throws GeneralSecurityException
	 */
	public static byte[] decryptByDesCbc(byte[] content, byte[] key) throws GeneralSecurityException {
		return decryptByDesCbc(content, key, ZERO_IVC);
	}

	/**
	 * des的cbc模式加密算法
	 * @param content 待加密数据
	 * @param key 加密密钥
	 * @return 加密结果
	 * @throws GeneralSecurityException
	 */
	public static byte[] encryptByDesCbc(byte[] content, byte[] key, byte[] icv) throws GeneralSecurityException {
		SecureRandom sr = new SecureRandom();
		DESKeySpec dks = new DESKeySpec(key);
		SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
		SecretKey secretKey = keyFactory.generateSecret(dks);
		Cipher cipher = Cipher.getInstance("DES/CBC/NoPadding");
		IvParameterSpec iv = new IvParameterSpec(icv);
		
		cipher.init(Cipher.ENCRYPT_MODE, secretKey, iv, sr);
		
		return cipher.doFinal(content);
	}
	
	/**
	 * des的cbc模式解密算法
	 * @param content 待解密数据
	 * @param key 密钥
	 * @return 解密结果
	 * @throws GeneralSecurityException
	 */
	public static byte[] decryptByDesCbc(byte[] content, byte[] key, byte[] icv) throws GeneralSecurityException {
		SecureRandom sr = new SecureRandom();
		DESKeySpec dks = new DESKeySpec(key);
		SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
		SecretKey secretKey = keyFactory.generateSecret(dks);
		Cipher cipher = Cipher.getInstance("DES/CBC/NoPadding");
		IvParameterSpec iv = new IvParameterSpec(icv);
		
		cipher.init(Cipher.DECRYPT_MODE, secretKey, iv, sr);
		
		return cipher.doFinal(content);
	}
	
	/**
	 * des加密算法,ECB方式,NoPadding模式,数据字节必须是8的整数倍
	 * @param key
	 * @param data 数据字节必须是8的整数倍
	 * @return 加密结果
	 * @throws GeneralSecurityException
	 */
	public static byte[] encryptByDesEcb(byte[] content, byte[] key) throws GeneralSecurityException { 
        Cipher cipher = Cipher.getInstance("DES/ECB/NoPadding");  
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
		SecretKey secretKey = keyFactory.generateSecret(new DESKeySpec(key));
        cipher.init(Cipher.ENCRYPT_MODE, secretKey);  
        return cipher.doFinal(content);  
    }
	
	/**
	 * des解密算法,ECB方式,NoPadding模式,数据字节必须是8的整数倍
	 * @param key 秘钥
	 * @param data 数据字节必须是8的整数倍
	 * @throws GeneralSecurityException 
	 * @return
	 */
	public static byte[] decryptByDesEcb(byte[] content, byte[] key) throws GeneralSecurityException { 
		Cipher cipher = Cipher.getInstance("DES/ECB/NoPadding");
		SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
		SecretKey secretKey = keyFactory.generateSecret(new DESKeySpec(key));
		cipher.init(Cipher.DECRYPT_MODE, secretKey);  
		return cipher.doFinal(content);  
	}
	
	/**
	 * 本项目用于生成外部设备认证码和校验卡认证码(javacard GP规范 SCP02安全通道)(cardCryptogram)
	 * B.1.2.1  Full Triple DES MAC 
     * The full triple DES MAC is as defined in [ISO 9797-1] as MAC Algorithm 1 with output transformation 3, 
     * without truncation, and with triple DES taking the place of the block cipher. 
	 * @param content 待加密数据
	 * @param key 加密密钥
	 * @return 加密结果后8字节
	 * @throws Exception
	 */
	public static byte[] encryptBy3DesCbcLast8Mac(byte[] content, byte[] key) throws GeneralSecurityException { 
		byte[] edata = encryptBy3DesCbc(content, key);
		
		byte[] result = new byte[8];
		System.arraycopy(edata, edata.length - 8, result, 0, 8);
		return result;
	}
	/**
	 * 将b1和b2做异或,然后返回
	 * @param b1
	 * @param b2
	 * @return 异或结果
	 */
	public static byte[] xOr(byte[] b1, byte[] b2) {
		byte[] tXor = new byte[Math.min(b1.length, b2.length)];
		for (int i = 0; i < tXor.length; i++)
			tXor[i] = (byte) (b1[i] ^ b2[i]); // 异或(Xor)
		return tXor;
	}
	
    /**
     * 整形转字节
     * @param n 整形数值
     * @param buf 结果字节数组
     * @param offset 填充开始位置
     */
    public static void int2byte(int n, byte buf[], int offset){
        buf[offset] = (byte)(n >> 24);
        buf[offset + 1] = (byte)(n >> 16);
        buf[offset + 2] = (byte)(n >> 8);
        buf[offset + 3] = (byte)n;
    }
    
    /**
     * 长整形转字节
     * @param n 长整形数值 
     * @param buf 结果字节数组
     * @param offset 填充开始位置
     */
    public static void long2byte(long n, byte buf[], int offset){
        buf[offset] = (byte)(int)(n >> 56);
        buf[offset + 1] = (byte)(int)(n >> 48);
        buf[offset + 2] = (byte)(int)(n >> 40);
        buf[offset + 3] = (byte)(int)(n >> 32);
        buf[offset + 4] = (byte)(int)(n >> 24);
        buf[offset + 5] = (byte)(int)(n >> 16);
        buf[offset + 6] = (byte)(int)(n >> 8);
        buf[offset + 7] = (byte)(int)n;
    }
	
}



狂想乐乐
QQ:66944003
邮箱:kxlele@163.com

  • src.rar (4.8 KB)
  • 下载次数: 15
分享到:
评论

相关推荐

Global site tag (gtag.js) - Google Analytics