Java Base64、HMAC、SHA1、MD5、AES DES 3DES加密算法

    ●  BASE64 严格地说，属于编码格式，而非加密算法
    ●  MD5(Message Digest algorithm 5，信息摘要算法)
    ●  SHA(Secure Hash Algorithm，安全散列算法)
    ●  HMAC(Hash Message Authentication Code，散列消息鉴别码)复杂的对称加密（DES、PBE）、非对称加密算法：
    ●  DES(Data Encryption Standard，数据加密算法)
    ●  PBE(Password-based encryption，基于密码验证)
    ●  RSA(算法的名字以发明者的名字命名：Ron Rivest, AdiShamir 和Leonard Adleman)
    ●  DH(Diffie-Hellman算法，密钥一致协议)
    ●  DSA(Digital Signature Algorithm，数字签名)
    ●  ECC(Elliptic Curves Cryptography，椭圆曲线密码编码学)[/size]

http://www.java2s.com/Code/Java/Security/CatalogSecurity.htm

Java Base64、SHA1、MD5、HMAC（非对称）

AES、DES、3DES对称)

加密算法

package com.example.decript;

import java.io.UnsupportedEncodingException;
import java.security.InvalidKeyException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.KeyGenerator;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;

public class DecriptTest {

// sun不推荐使用它们自己的base64,用apache的挺好
/**
* BASE64解密
*/
public static byte[] decryptBASE64(byte[] dest) {
if (dest == null) {
return null;
}
return Base64.decodeBase64(dest);
}

/**
* BASE64加密
*/
public static byte[] encryptBASE64(byte[] origin) {
if (origin == null) {
return null;
}
return Base64.encodeBase64(origin);
}

    public static String SHA1(String decript) {
        try {
            MessageDigest digest = java.security.MessageDigest
                    .getInstance("SHA-1");
            digest.update(decript.getBytes());
            byte messageDigest[] = digest.digest();
            // Create Hex String
            StringBuffer hexString = new StringBuffer();
            // 字节数组转换为 十六进制 数
            for (int i = ; i < messageDigest.length; i++) {
                String shaHex = Integer.toHexString(messageDigest[i] & 0xFF);
                if (shaHex.length() < ) {
                    hexString.append();
                }
                hexString.append(shaHex);
            }
            return hexString.toString();

        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }
        return "";
    }

    public static String SHA(String decript) {
        try {
            MessageDigest digest = java.security.MessageDigest
                    .getInstance("SHA");
            digest.update(decript.getBytes());
            byte messageDigest[] = digest.digest();
            // Create Hex String
            StringBuffer hexString = new StringBuffer();
            // 字节数组转换为 十六进制 数
            for (int i = ; i < messageDigest.length; i++) {
                String shaHex = Integer.toHexString(messageDigest[i] & 0xFF);
                if (shaHex.length() < ) {
                    hexString.append();
                }
                hexString.append(shaHex);
            }
            return hexString.toString();

        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }
        return "";
    }

    public static String MD5(String input) {
        try {
            // 获得MD5摘要算法的 MessageDigest 对象
            MessageDigest mdInst = MessageDigest.getInstance("MD5");
            // 使用指定的字节更新摘要
            mdInst.update(input.getBytes());
            // 获得密文
            byte[] md = mdInst.digest();
            // 把密文转换成十六进制的字符串形式
            StringBuffer hexString = new StringBuffer();
            // 字节数组转换为 十六进制 数
            for (int i = ; i < md.length; i++) {
                String shaHex = Integer.toHexString(md[i] & 0xFF);
                if (shaHex.length() < ) {
                    hexString.append();
                }
                hexString.append(shaHex);
            }
            return hexString.toString();
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }
        return "";
    }

　　　　

/**
* 初始化HMAC密钥
*
* @throws NoSuchAlgorithmException
*/
public static String initMacKey() throws NoSuchAlgorithmException {
KeyGenerator keyGenerator = KeyGenerator.getInstance(KEY_MAC);
SecretKey secretKey = keyGenerator.generateKey();
return new String(encryptBASE64(secretKey.getEncoded()));
}

/**
* HMAC加密
*
* @throws NoSuchAlgorithmException
* @throws InvalidKeyException
*/
public static byte[] encryptHMAC(byte[] data, String key)
throws NoSuchAlgorithmException, InvalidKeyException {
SecretKey secretKey = new SecretKeySpec(decryptBASE64(key.getBytes()),
KEY_MAC);
Mac mac = Mac.getInstance(secretKey.getAlgorithm());
mac.init(secretKey);
return mac.doFinal(data);

}

    /**
     * 加密
     *
     * @param content
     *            需要加密的内容
     * @param password
     *            加密密码
     * @return
     */
    public static byte[] encryptAES(String content, String password) {
        try {
            KeyGenerator kgen = KeyGenerator.getInstance("AES");
            kgen.init(, new SecureRandom(password.getBytes()));
            SecretKey secretKey = kgen.generateKey();
            byte[] enCodeFormat = secretKey.getEncoded();
            SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
            Cipher cipher = Cipher.getInstance("AES");// 创建密码器
            byte[] byteContent = content.getBytes("utf-8");
            cipher.init(Cipher.ENCRYPT_MODE, key);// 初始化
            byte[] result = cipher.doFinal(byteContent);
            return result; // 加密
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (NoSuchPaddingException e) {
            e.printStackTrace();
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (IllegalBlockSizeException e) {
            e.printStackTrace();
        } catch (BadPaddingException e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * 解密
     *
     * @param content
     *            待解密内容
     * @param password
     *            解密密钥
     * @return
     */
    public static byte[] decryptAES(byte[] content, String password) {
        try {
            KeyGenerator kgen = KeyGenerator.getInstance("AES");
            kgen.init(, new SecureRandom(password.getBytes()));
            SecretKey secretKey = kgen.generateKey();
            byte[] enCodeFormat = secretKey.getEncoded();
            SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
            Cipher cipher = Cipher.getInstance("AES");// 创建密码器
            cipher.init(Cipher.DECRYPT_MODE, key);// 初始化
            byte[] result = cipher.doFinal(content);
            return result; // 加密
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (NoSuchPaddingException e) {
            e.printStackTrace();
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        } catch (IllegalBlockSizeException e) {
            e.printStackTrace();
        } catch (BadPaddingException e) {
            e.printStackTrace();
        }
        return null;
    }
}

///////////////////////////////DES////////////////////////////////////////
    // test:
    //String source = "amigoxie";
    //        System.out.println("原文: " + source);
    //    String key = "A1B2C3D4E5F60708";
    //    String encryptData;
    //    try {
    //        encryptData = encrypt(source, key);
    //        System.out.println("加密后: " + encryptData);
    //        String decryptData = decrypt(encryptData, key);
    //        System.out.println("解密后: " + decryptData);
    //    } catch (Exception e) {
    //        // TODO Auto-generated catch block
    //        e.printStackTrace();
    //    }                

     //算法名称
    public static final String KEY_ALGORITHM = "DES";
    //算法名称/加密模式/填充方式
    //DES共有四种工作模式-->>ECB：电子密码本模式、CBC：加密分组链接模式、CFB：加密反馈模式、OFB：输出反馈模式
    public static final String CIPHER_ALGORITHM = "DES/ECB/NoPadding";

    /**
     *
     * 生成密钥key对象
     * @param KeyStr 密钥字符串
     * @return 密钥对象
     * @throws InvalidKeyException
     * @throws NoSuchAlgorithmException
     * @throws InvalidKeySpecException
     * @throws Exception
     */
    private static SecretKey keyGenerator(String keyStr) throws Exception {
        byte input[] = HexString2Bytes(keyStr);
        DESKeySpec desKey = new DESKeySpec(input);
        //创建一个密匙工厂，然后用它把DESKeySpec转换成
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
        SecretKey securekey = keyFactory.generateSecret(desKey);
        return securekey;
    }

    private static int parse(char c) {
        if (c >= 'a') return (c - 'a' + ) & 0x0f;
        if (c >= 'A') return (c - 'A' + ) & 0x0f;
        return (c - '') & 0x0f;
    }

    // 从十六进制字符串到字节数组转换
    public static byte[] HexString2Bytes(String hexstr) {
        byte[] b = new byte[hexstr.length() / ];
        int j = ;
        for (int i = ; i < b.length; i++) {
            char c0 = hexstr.charAt(j++);
            char c1 = hexstr.charAt(j++);
            b[i] = (byte) ((parse(c0) << ) | parse(c1));
        }
        return b;
    }

    /**
     * 加密数据
     * @param data 待加密数据
     * @param key 密钥
     * @return 加密后的数据
     */
    public static String encrypt(String data, String key) throws Exception {
        Key deskey = keyGenerator(key);
        // 实例化Cipher对象，它用于完成实际的加密操作
        Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
        SecureRandom random = new SecureRandom();
        // 初始化Cipher对象，设置为加密模式
        cipher.init(Cipher.ENCRYPT_MODE, deskey, random);
        byte[] results = cipher.doFinal(data.getBytes());
        // 该部分是为了与加解密在线测试网站（http://tripledes.online-domain-tools.com/）的十六进制结果进行核对
        for (int i = ; i < results.length; i++) {
            System.out.print(results[i] + " ");
        }
        System.out.println();
        // 执行加密操作。加密后的结果通常都会用Base64编码进行传输
        return Base64.encodeBase64String(results);
    }

    /**
     * 解密数据
     * @param data 待解密数据
     * @param key 密钥
     * @return 解密后的数据
     */
    public static String decrypt(String data, String key) throws Exception {
        Key deskey = keyGenerator(key);
        Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
        //初始化Cipher对象，设置为解密模式
        cipher.init(Cipher.DECRYPT_MODE, deskey);
        // 执行解密操作
        return new String(cipher.doFinal(Base64.decodeBase64(data)));
    }
///////////////////////////////DES////////////////////////////////////////

/////////////////////////////////////////////////3DES///////////////////////////////////////////////////////
    // 算法名称
    public static final String KEY_ALGORITHM = "desede";
    // 算法名称/加密模式/填充方式
    public static final String CIPHER_ALGORITHM = "desede/CBC/NoPadding";

    /**
     * CBC加密
     * @param key 密钥
     * @param keyiv IV
     * @param data 明文
     * @return Base64编码的密文
     * @throws Exception
     */
    public static byte[] des3EncodeCBC(byte[] key, byte[] keyiv, byte[] data) throws Exception {
        Security.addProvider(new BouncyCastleProvider());
        Key deskey = keyGenerator(new String(key));
        Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
        IvParameterSpec ips = new IvParameterSpec(keyiv);
        cipher.init(Cipher.ENCRYPT_MODE, deskey, ips);
        byte[] bOut = cipher.doFinal(data);
        for (int k = ; k < bOut.length; k++) {
            System.out.print(bOut[k] + " ");
        }
        System.out.println("");
        return bOut;
    }

    /**
     *
     * 生成密钥key对象
     * @param KeyStr 密钥字符串
     * @return 密钥对象
     * @throws InvalidKeyException
     * @throws NoSuchAlgorithmException
     * @throws InvalidKeySpecException
     * @throws Exception
     */
    private static Key keyGenerator(String keyStr) throws Exception {
        byte input[] = HexString2Bytes(keyStr);
        DESedeKeySpec KeySpec = new DESedeKeySpec(input);
        SecretKeyFactory KeyFactory = SecretKeyFactory.getInstance(KEY_ALGORITHM);
        return ((Key) (KeyFactory.generateSecret(((java.security.spec.KeySpec) (KeySpec)))));
    }

    private static int parse(char c) {
        if (c >= 'a') return (c - 'a' + ) & 0x0f;
        if (c >= 'A') return (c - 'A' + ) & 0x0f;
        return (c - '') & 0x0f;
    }

    // 从十六进制字符串到字节数组转换
    public static byte[] HexString2Bytes(String hexstr) {
        byte[] b = new byte[hexstr.length() / ];
        int j = ;
        for (int i = ; i < b.length; i++) {
            char c0 = hexstr.charAt(j++);
            char c1 = hexstr.charAt(j++);
            b[i] = (byte) ((parse(c0) << ) | parse(c1));
        }
        return b;
    }

    /**
     * CBC解密
     * @param key 密钥
     * @param keyiv IV
     * @param data Base64编码的密文
     * @return 明文
     * @throws Exception
     */
    public static byte[] des3DecodeCBC(byte[] key, byte[] keyiv, byte[] data) throws Exception {
        Key deskey = keyGenerator(new String(key));
        Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
        IvParameterSpec ips = new IvParameterSpec(keyiv);
        cipher.init(Cipher.DECRYPT_MODE, deskey, ips);
        byte[] bOut = cipher.doFinal(data);
        return bOut;
    }

    public static void main(String[] args) throws Exception {
        byte[] key = "6C4E60E55552386C759569836DC0F83869836DC0F838C0F7".getBytes();
        byte[] keyiv = { , , , , , , ,  };
        byte[] data = "amigoxie".getBytes("UTF-8");
        System.out.println("data.length=" + data.length);
        System.out.println("CBC加密解密");
        byte[] str5 = des3EncodeCBC(key, keyiv, data);
        System.out.println(new sun.misc.BASE64Encoder().encode(str5));

        byte[] str6 = des3DecodeCBC(key, keyiv, str5);
        System.out.println(new String(str6, "UTF-8"));
    }
    /////////////////////////////////////////////////3DES///////////////////////////////////////////////////////