PropUtils.getProperty("jdbc.username");
public class PropUtils {
// 本地环境-研发六楼环境
private static final String devMode = "development";
// 正式环境
// private static final String devMode = "production";
// 测试环境
//private static final String devMode = "test";
private static final byte[] KEY = {9, -1, 0, 5, 39, 8, 6, 19};
private static Properties prop = new Properties();
static {
try {
Properties redis = new Properties();
Properties kafka = new Properties();
Properties jdbc = new Properties();
redis.load(PropUtils.class.getClassLoader().getResourceAsStream("profile/" + devMode + "/redis.properties"));
kafka.load(PropUtils.class.getClassLoader().getResourceAsStream("profile/" + devMode + "/kafka.properties"));
jdbc.load(PropUtils.class.getClassLoader().getResourceAsStream("profile/" + devMode + "/jdbc.properties"));
String[] keys={"jdbc.username","jdbc.password"};
for (Object key : keys) {
String keyStr = key.toString();
String value = jdbc.getProperty(keyStr);
// 使用工具类的解密算法
value = SecurityUtil.decryptDes(value, KEY);
jdbc.setProperty(keyStr, value);
}
prop.putAll(redis);
prop.putAll(kafka);
prop.putAll(jdbc);
} catch (IOException e) {
log.error("加载配置文件失败！", e);
System.exit(1);
}
}
public static String getProperty(String p) {
return prop.getProperty(p);
}
public static int getInt(String p) {
return Integer.parseInt(prop.getProperty(p));
}
public static boolean getBoolean(String p) {
return Boolean.parseBoolean(prop.getProperty(p));
}
public static String getDevMode() {
return devMode;
}
}
DES加密
工具类--SecurityUtil
public final class SecurityUtil {
private SecurityUtil() {
}
public static final String CHARSET = "UTF-8";
/**
* BASE64解码
*
* @param key
* @return
* @throws Exception
*/
public static final byte[] decryptBASE64(String key) {
try {
return new BASE64Encoder().decode(key);
} catch (Exception e) {
throw new RuntimeException("解密错误，错误信息：", e);
}
}
/**
* BASE64编码
*
* @param key
* @return
* @throws Exception
*/
public static final String encryptBASE64(byte[] key) {
try {
return new BASE64Encoder().encode(key);
} catch (Exception e) {
throw new RuntimeException("加密错误，错误信息：", e);
}
}
/**
* 数据解密，算法（DES）
*
* @param cryptData
* 加密数据
* @return 解密后的数据
*/
public static final String decryptDes(String cryptData, byte[] key) {
String decryptedData = null;
try {
// 把字符串解码为字节数组，并解密
decryptedData = new String(DESCoder.decrypt(decryptBASE64(cryptData), key));
} catch (Exception e) {
throw new RuntimeException("解密错误，错误信息：", e);
}
return decryptedData;
}
/**
* 数据加密，算法（DES）
*
* @param data
* 要进行加密的数据
* @return 加密后的数据
*/
public static final String encryptDes(String data, byte[] key) {
String encryptedData = null;
try {
// 加密，并把字节数组编码成字符串
encryptedData = encryptBASE64(DESCoder.encrypt(data.getBytes(), key));
} catch (Exception e) {
throw new RuntimeException("加密错误，错误信息：", e);
}
return encryptedData;
}
public static void main(String[] args) {//ROOT为要加密的明文
byte[] KEY = {9, -1, 0, 5, 39, 8, 6, 19};
String encrypt = SecurityUtil.encryptDes("ROOT", KEY);
System.out.println(encrypt);
System.out.println(SecurityUtil.decryptDes(encrypt, KEY));
}
}
DESCoder
import java.security.InvalidKeyException;
import java.security.Key;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.security.spec.InvalidKeySpecException;
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.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;
/**
* DES安全编码组件
*
* @author du
* @version 1.0
* @since 1.0
*/
public abstract class DESCoder {
/**
* 密钥算法 <br>
* Java 6 只支持56bit密钥 <br>
* Bouncy Castle 支持64bit密钥
*/
public static final String KEY_ALGORITHM = "DES";
/**
* 加密/解密算法 / 工作模式 / 填充方式
*/
public static final String CIPHER_ALGORITHM = "DES/ECB/PKCS5PADDING";
/**
* 转换密钥
*
* @param key 二进制密钥
* @return Key 密钥
* @throws InvalidKeyException
* @throws NoSuchAlgorithmException
* @throws InvalidKeySpecException
* @throws Exception
*/
private static Key toKey(byte[] key) throws InvalidKeyException, NoSuchAlgorithmException, InvalidKeySpecException {
// 实例化DES密钥材料
DESKeySpec dks = new DESKeySpec(key);
// 实例化秘密密钥工厂
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(KEY_ALGORITHM);
// 生成秘密密钥
SecretKey secretKey = keyFactory.generateSecret(dks);
return secretKey;
}
/**
* 解密
*
* @param data 待解密数据
* @param key 密钥
* @return byte[] 解密数据
* @throws InvalidKeySpecException
* @throws NoSuchAlgorithmException
* @throws InvalidKeyException
* @throws NoSuchPaddingException
* @throws BadPaddingException
* @throws IllegalBlockSizeException
* @throws Exception
*/
public static byte[] decrypt(byte[] data, byte[] key) throws InvalidKeyException, NoSuchAlgorithmException,
InvalidKeySpecException, NoSuchPaddingException, IllegalBlockSizeException, BadPaddingException {
// 还原密钥
Key k = toKey(key);
// 实例化
Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
// 初始化，设置为解密模式
cipher.init(Cipher.DECRYPT_MODE, k);
// 执行操作
return cipher.doFinal(data);
}
/**
* 加密
*
* @param data 待加密数据
* @param key 密钥
* @return byte[] 加密数据
* @throws NoSuchPaddingException
* @throws NoSuchAlgorithmException
* @throws InvalidKeyException
* @throws BadPaddingException
* @throws IllegalBlockSizeException
* @throws InvalidKeySpecException
* @throws Exception
*/
public static byte[] encrypt(byte[] data, byte[] key) throws NoSuchAlgorithmException, NoSuchPaddingException,
InvalidKeyException, IllegalBlockSizeException, BadPaddingException, InvalidKeySpecException {
// 还原密钥
Key k = toKey(key);
// 实例化
Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
// 初始化，设置为加密模式
cipher.init(Cipher.ENCRYPT_MODE, k);
// 执行操作
return cipher.doFinal(data);
}
/**
* 生成密钥 <br>
* Java 6 只支持56bit密钥 <br>
* Bouncy Castle 支持64bit密钥 <br>
*
* @return byte[] 二进制密钥
* @throws NoSuchAlgorithmException
* @throws Exception
*/
public static byte[] initKey() throws NoSuchAlgorithmException {
/*
* 实例化密钥生成器
*
* 若要使用64bit密钥注意替换 将下述代码中的KeyGenerator.getInstance(CIPHER_ALGORITHM);
* 替换为KeyGenerator.getInstance(CIPHER_ALGORITHM, "BC");
*/
KeyGenerator kg = KeyGenerator.getInstance(KEY_ALGORITHM);
/*
* 初始化密钥生成器 若要使用64bit密钥注意替换 将下述代码kg.init(56); 替换为kg.init(64);
*/
kg.init(56, new SecureRandom());
// 生成秘密密钥
SecretKey secretKey = kg.generateKey();
// 获得密钥的二进制编码形式
return secretKey.getEncoded();
}
}
BASE64Encoder
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PushbackInputStream;
/**
* 密码器类
*
* @author du
* @since 2017-11-19
*/
public class BASE64Encoder {
/**
* 译码数据源
*/
private static final char[] PEM_ARRAY = {
// 0 1 2 3 4 5 6 7
'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', // 0
'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', // 1
'q', 'r', 's', 't', 'u', 'v', 'w', 'x', // 2
'y', 'z', '1', '2', '3', '4', '5', '6', // 3
'7', '8', '9', '0', 'A', 'B', 'C', 'D', // 4
'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', // 5
'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', // 6
'U', 'V', 'W', 'X', 'Y', 'Z', '+', '/' // 7
};
private static final byte[] pem_convert_array = new byte[256];
private byte[] decode_buffer = new byte[4];
public BASE64Encoder() {
}
/**
* 编码
*/
public String encode(byte[] bt) {
int totalBits = bt.length * 8;
int nn = totalBits % 6;
int curPos = 0;// process bits
StringBuilder toReturn = new StringBuilder(32);
while (curPos < totalBits) {
int bytePos = curPos / 8;
switch (curPos % 8) {
case 0:
toReturn.append(PEM_ARRAY[(bt[bytePos] & 0xfc) >> 2]);
break;
case 2:
toReturn.append(PEM_ARRAY[(bt[bytePos] & 0x3f)]);
break;
case 4:
if (bytePos == bt.length - 1) {
toReturn.append(PEM_ARRAY[((bt[bytePos] & 0x0f) << 2) & 0x3f]);
} else {
int pos = (((bt[bytePos] & 0x0f) << 2) | ((bt[bytePos + 1] & 0xc0) >> 6)) & 0x3f;
toReturn.append(PEM_ARRAY[pos]);
}
break;
case 6:
if (bytePos == bt.length - 1) {
toReturn.append(PEM_ARRAY[((bt[bytePos] & 0x03) << 4) & 0x3f]);
} else {
int pos = (((bt[bytePos] & 0x03) << 4) | ((bt[bytePos + 1] & 0xf0) >> 4)) & 0x3f;
toReturn.append(PEM_ARRAY[pos]);
}
break;
default:
break;
}
curPos += 6;
}
if (nn == 2) {
toReturn.append("==");
} else if (nn == 4) {
toReturn.append("=");
}
return toReturn.toString();
}
/**
* 解码
*/
public byte[] decode(String str) throws IOException {
byte[] arrayOfByte = str.getBytes();
ByteArrayInputStream inputStream = new ByteArrayInputStream(arrayOfByte);
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
decodeBuffer(inputStream, outputStream);
return outputStream.toByteArray();
}
private void decodeBuffer(InputStream paramInputStream, OutputStream paramOutputStream) throws IOException {
PushbackInputStream localPushbackInputStream = new PushbackInputStream(paramInputStream);
int j = 0;
while (true) {
try {
int k = bytesPerLine();
int i = 0;
if (i + bytesPerAtom() < k) {
decodeAtom(localPushbackInputStream, paramOutputStream, bytesPerAtom());
j += bytesPerAtom();
i += bytesPerAtom();
continue;
}
if (i + bytesPerAtom() == k) {
decodeAtom(localPushbackInputStream, paramOutputStream, bytesPerAtom());
j += bytesPerAtom();
} else {
decodeAtom(localPushbackInputStream, paramOutputStream, k - i);
j += k - i;
}
} catch (RuntimeException e) {
String.valueOf(j);
break;
}
}
}
private int bytesPerAtom() {
return 4;
}
private int bytesPerLine() {
return 72;
}
private void decodeAtom(PushbackInputStream paramPushbackInputStream, OutputStream paramOutputStream, int paramInt)
throws IOException {
int i;
int j = -1;
int k = -1;
int m = -1;
int n = -1;
if (paramInt < 2) {
throw new java.lang.ArrayStoreException("BASE64Decoder: Not enough bytes for an atom.");
}
do {
i = paramPushbackInputStream.read();
if (i == -1) {
throw new RuntimeException();
}
} while ((i == 10) || (i == 13));
this.decode_buffer[0] = (byte)i;
i = readFully(paramPushbackInputStream, this.decode_buffer, 1, paramInt - 1);
if (i == -1) {
throw new RuntimeException();
}
if ((paramInt > 3) && (this.decode_buffer[3] == 61)) {
paramInt = 3;
}
if ((paramInt > 2) && (this.decode_buffer[2] == 61)) {
paramInt = 2;
}
switch (paramInt) {
case 4:
n = pem_convert_array[(this.decode_buffer[3] & 0xFF)];
case 3:
m = pem_convert_array[(this.decode_buffer[2] & 0xFF)];
case 2:
k = pem_convert_array[(this.decode_buffer[1] & 0xFF)];
j = pem_convert_array[(this.decode_buffer[0] & 0xFF)];
}
switch (paramInt) {
case 2:
paramOutputStream.write((byte)(j << 2 & 0xFC | k >>> 4 & 0x3));
break;
case 3:
paramOutputStream.write((byte)(j << 2 & 0xFC | k >>> 4 & 0x3));
paramOutputStream.write((byte)(k << 4 & 0xF0 | m >>> 2 & 0xF));
break;
case 4:
paramOutputStream.write((byte)(j << 2 & 0xFC | k >>> 4 & 0x3));
paramOutputStream.write((byte)(k << 4 & 0xF0 | m >>> 2 & 0xF));
paramOutputStream.write((byte)(m << 6 & 0xC0 | n & 0x3F));
}
}
private int readFully(InputStream paramInputStream, byte[] paramArrayOfByte, int paramInt1, int paramInt2)
throws IOException {
for (int i = 0; i < paramInt2; i++) {
int j = paramInputStream.read();
if (j == -1) {
return i == 0 ? -1 : i;
}
paramArrayOfByte[(i + paramInt1)] = (byte)j;
}
return paramInt2;
}
static {
for (int i = 0; i < 255; i++) {
pem_convert_array[i] = -1;
}
for (int i = 0; i < PEM_ARRAY.length; i++)
pem_convert_array[PEM_ARRAY[i]] = (byte)i;
}
}
参考：https://www.iteye.com/blog/dushen-2405528
AES算法
工具类--AESUtil
public class AESUtil {
private static String key= "123456";
/**
* 加密
* @param content待加密内容
* @param key 加密的密钥
* @return
*/
public static String encrypt(String content, String key) {
try {
KeyGenerator kgen = KeyGenerator.getInstance("AES");//构造密钥生成器，指定为AES算法，不区分大小写
kgen.init(128, new SecureRandom(key.getBytes()));
SecretKey secretKey = kgen.generateKey();
byte[] enCodeFormat = secretKey.getEncoded();
SecretKeySpec secretKeySpec = new SecretKeySpec(enCodeFormat, "AES");
Cipher cipher = Cipher.getInstance("AES");
byte[] byteContent = content.getBytes("utf-8");
cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec);//ENCRYPT_MODE指加密操作
byte[] byteRresult = cipher.doFinal(byteContent);
StringBuffer sb = new StringBuffer();
for (int i = 0; i < byteRresult.length; i++) {
String hex = Integer.toHexString(byteRresult[i] & 0xFF);
if (hex.length() == 1) {
hex = '0' + hex;
}
sb.append(hex.toUpperCase());
}
return sb.toString();
} 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 key 解密的密钥
* @return
*/
public static String decrypt(String content, String key) {
if (content.length() < 1)
return null;
byte[] byteRresult = new byte[content.length() / 2];
for (int i = 0; i < content.length() / 2; i++) {
int high = Integer.parseInt(content.substring(i * 2, i * 2 + 1), 16);
int low = Integer.parseInt(content.substring(i * 2 + 1, i * 2 + 2),16);
byteRresult[i] = (byte) (high * 16 + low);
}
try {
KeyGenerator kgen = KeyGenerator.getInstance("AES");
SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG");
secureRandom.setSeed(key.getBytes());
kgen.init(128, secureRandom);
SecretKey secretKey = kgen.generateKey();
byte[] enCodeFormat = secretKey.getEncoded();
SecretKeySpec secretKeySpec = new SecretKeySpec(enCodeFormat, "AES");
Cipher cipher = Cipher.getInstance("AES");
cipher.init(Cipher.DECRYPT_MODE, secretKeySpec);//Decrypt_mode指解密操作
byte[] result = cipher.doFinal(byteRresult);
return new String(result,"utf-8");//不加utf-8，中文时会乱码
} 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();
}catch (Exception e) {
e.printStackTrace();
}
return null;
}
//重载的方法，使用默认密钥
public static String decrypt(String content) {
return decrypt(content, key);
}
public static String encrypt(String content) {
return encrypt(content, key);
}
}
参考：https://blog.csdn.net/qq_23888451/article/details/84658360
来源：CSDN
作者：csdnzh365
链接：https://blog.csdn.net/csdnzhang365/article/details/103464041