package com.yy.gpo.common.utils;
import java.io.UnsupportedEncodingException;
import java.security.InvalidKeyException;
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;
import org.apache.commons.codec.binary.Base64;
import org.apache.commons.lang.StringUtils;
/**
* 共同加解密方法
*
* @author Administrator
*/
public class EncryptUtil {
private static final String UTF_8 = "utf-8";
private static final String AES = "AES";
public static final String SIGN_ALGORITHMS = "SHA1PRNG";
static String SECRET_PWD = "";
static {
// 获取密钥
try {
String str = "1234567890abcdef";
byte[] b = str.getBytes(UTF_8);
SECRET_PWD = new String(new Base64().encode(b));
//System.out.println("Base64加密后的密钥密码：" + SECRET_PWD);
} catch (UnsupportedEncodingException e) {
}
}
/**
* AES加密
* <p>返回 Base64 加密结果 code</p>
* @param content 待加密的内容
* @return 加密后的base 64 code
* @throws Exception
*/
public static String encrypt(String content) {
if(StringUtils.isBlank(content)){
return null;
}
try {
// 用AES算法加密的密钥
SecretKeySpec key = getKey();
// 创建密码器
Cipher cipher = Cipher.getInstance(AES);
cipher.init(Cipher.ENCRYPT_MODE, key);
byte[] byteEncrypt = cipher.doFinal(content.getBytes(UTF_8));
return base64Encode(byteEncrypt);
} catch (NoSuchAlgorithmException e) {
return null;
} catch (NoSuchPaddingException e) {
return null;
} catch (InvalidKeyException e) {
return null;
} catch (IllegalBlockSizeException e) {
return null;
} catch (BadPaddingException e) {
return null;
} catch (UnsupportedEncodingException e) {
return null;
}
}
/**
* AES解密
* <p>Base64结果解密 </p>
* @param content 待解密的base 64 code
* @return 解密后的string
* @throws Exception
*/
public static String decrypt(String content) {
if(StringUtils.isBlank(content)){
return null;
}
try {
// 用AES算法加密的密钥
SecretKeySpec key = getKey();
// 创建密码器
Cipher cipher = Cipher.getInstance(AES);
// Cipher cipher = Cipher.getInstance("DES/ECB/NoPadding");
cipher.init(Cipher.DECRYPT_MODE, key);
byte[] byteDecrypt = cipher.doFinal(base64Decode(content));
return new String(byteDecrypt);
} catch (NoSuchAlgorithmException e) {
return null;
} catch (NoSuchPaddingException e) {
return null;
} catch (IllegalBlockSizeException e) {
return null;
} catch (BadPaddingException e) {
return null;
} catch (UnsupportedEncodingException e) {
return null;
} catch (InvalidKeyException e) {
return null;
}
}
/**
* 生成密钥
*
* @return SecretKeySpec 用AES算法加密的密钥
* @throws NoSuchAlgorithmException
* @throws UnsupportedEncodingException
*/
private static SecretKeySpec getKey() throws NoSuchAlgorithmException, UnsupportedEncodingException {
//实例化一个用AES加密算法的密钥生成器
KeyGenerator kgen = KeyGenerator.getInstance(AES);
// kgen.init(128, new SecureRandom(SECRET_PWD.getBytes()));
SecureRandom random = SecureRandom.getInstance(SIGN_ALGORITHMS);
random.setSeed(SECRET_PWD.getBytes(UTF_8));
kgen.init(128, random);
//生成一个密钥
SecretKey secretKey = kgen.generateKey();
SecretKeySpec key = new SecretKeySpec(secretKey.getEncoded(), AES);
return key;
}
/**
* base 64 encode
*
* @param bytes
* 待编码的byte[]
* @return 编码后的base 64 code
*/
private static String base64Encode(byte[] bytes) {
return new String(new Base64().encode(bytes));
}
/**
* base 64 decode
*
* @param base64Code
* 待解码的base 64 code
* @return 解码后的byte[]
* @throws UnsupportedEncodingException
* @throws Exception
*/
private static byte[] base64Decode(String base64Code) throws UnsupportedEncodingException {
return StringUtil.isEmpty(base64Code) ? null : new Base64().decode(base64Code.getBytes(UTF_8));
}
public static void main(String[] args) {
// String test = "123456.23";
// System.out.println(EncryptUtil.encrypt(test));
System.out.println(EncryptUtil.decrypt("x3+l/ydZYo+JKS5Mji5ohA=="));
// String test_jiami = EncryptUtil.encrypt(test);03xzaerJs88o86cuFKtAMQ== 5JpfBOgawSonvKjNR0i5mw== ks79RzARRV3jNsUPZ1NXwQ==
// System.out.println(EncryptUtil.decrypt("YZUMpSCefN7FAr//il66Ww=="));
}
}