import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Random;
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESedeKeySpec;
import javax.crypto.spec.IvParameterSpec;
import org.apache.commons.lang3.StringUtils;
import org.springframework.util.Base64Utils;
//import java.util.Base64;
//import org.apache.commons.net.util.Base64;
public class DES3 {
public static void main(String[] args) throws UnsupportedEncodingException,
NoSuchAlgorithmException {
String keyStr = "HRDS20170810";
System.out.println("密钥明文：" + keyStr);
byte keys[] = keyStr.getBytes("UTF-8");
System.out.println("UTF-8十六进制：" + bytes2hex(keys));
String keyBase64 = Base64Utils.encodeToString(keys);
System.out.println("Base64密钥：" + keyBase64);
System.out.println("Base64密钥还原："
+ new String(Base64Utils.decodeFromString(keyBase64), "UTF-8")
+ "\n");
String strText = "1";
System.out.println("待加密的串：" + strText);
String text1 = DES3.encryptProperty(strText, keyBase64);
System.out.println("Base64密文：" + text1);
String text2 = DES3.decryptProperty(text1, keyBase64);
System.out.println("解密出的串：" + text2);
// 加密指纹
MessageDigest md5 = MessageDigest.getInstance("MD5");
md5.update((strText + keyStr).getBytes("UTF-8"));
System.out.println("MD5加密指纹：" + bytes2hex(md5.digest()));
}
private DES3() {
}
public static String encryptProperty(String clearText, String keyBase64) {
if(StringUtils.isBlank(clearText)){
return "";
}
byte[] key = Base64Utils.decodeFromString(keyBase64);
return DES3.performDESedeCoder(clearText, key, true);
}
public static String decryptProperty(String cipherText, String keyBase64) {
byte[] key = Base64Utils.decodeFromString(keyBase64);
return DES3.performDESedeCoder(cipherText, key, false);
}
public static String performDESedeCoder(String inputValue, byte[] key,
boolean encrypt) {
byte[] k = key;
byte keyByteArray[];
if (k.length < 24) {
keyByteArray = new byte[24];
System.arraycopy(k, 0, keyByteArray, 0, k.length);
for (int i = k.length; i < 24; i++) {
keyByteArray[i] = 48;// 不足24字节时，补0
}
k = keyByteArray;
}
String KEY_ALGORITHM = "DESede";
String CIPHER_ALGORITHM = "DESede/CBC/PKCS5Padding";
byte[] data = null;
try {
DESedeKeySpec dks = new DESedeKeySpec(k);
SecretKeyFactory keyFactory = SecretKeyFactory
.getInstance(KEY_ALGORITHM);
SecretKey secretKey = keyFactory.generateSecret(dks);
IvParameterSpec iv = new IvParameterSpec("12345678".getBytes());
Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
byte[] input;
if (encrypt) {
cipher.init(Cipher.ENCRYPT_MODE, secretKey, iv);
input = inputValue.getBytes("UTF-8");
} else {
cipher.init(Cipher.DECRYPT_MODE, secretKey, iv);
input = Base64Utils.decodeFromString(inputValue);
}
data = cipher.doFinal(input);
} catch (Exception e) {
throw new HRQZRuntimeException(e);
}
String rtnValue;
if (data == null) {
rtnValue = inputValue;
} else {
if (encrypt) {
rtnValue = Base64Utils.encodeToString(data);
} else {
try {
rtnValue = new String(data, "UTF-8");
} catch (UnsupportedEncodingException e) {
throw new HRQZRuntimeException(e);
}
}
}
return rtnValue;
}
public static String bytes2hex(byte[] bytes) {
final String HEX = "0123456789ABCDEF";
StringBuilder sb = new StringBuilder(bytes.length * 2);
for (byte b : bytes) {
// 取出这个字节的高4位，然后与0x0f与运算，得到一个0-15之间的数据，通过HEX.charAt(0-15)即为16进制数
sb.append(HEX.charAt((b >> 4) & 0x0f));
// 取出这个字节的低位，与0x0f与运算，得到一个0-15之间的数据，通过HEX.charAt(0-15)即为16进制数
sb.append(HEX.charAt(b & 0x0f));
}
return sb.toString();
}
public static String genRandomNum(){
int maxNum = 36;
int i;
int count = 0;
char[] str = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K',
'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
'X', 'Y', 'Z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' };
StringBuffer pwd = new StringBuffer("");
Random r = new Random();
while(count < 8){
i = Math.abs(r.nextInt(maxNum));
if (i >= 0 && i < str.length) {
pwd.append(str[i]);
count ++;
}
}
return pwd.toString();
}
}
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来自为知笔记(Wiz)
转载于:https://www.cnblogs.com/hai77haidong/p/7483521.html
