加密是每一个系统都会用到的，为了自己以后开发方便以及有喜欢的或需要的朋友参考。
1.此处加密的方法用的是shiro的加密机制，如果用jdk自带的话没有盐值属性，拥有盐值的加密方式更加安全。
2.加密有Base64的加密和md5加密等多种方式，Base64加密是可以逆向解密的，而MD5加密是不可逆的，所以在选择加密方式的时候根据需要合理选择
public class EndecryptUtils {
/**
* base64进制加密
*
* @param password
* @return
*/
public static String encrytBase64(String password) {
Preconditions.checkArgument(!Strings.isNullOrEmpty(password), "不能为空");
byte[] bytes = password.getBytes();
return Base64.encodeToString(bytes);
}
/**
* base64进制解密
* @param cipherText
* @return
*/
public static String decryptBase64(String cipherText) {
Preconditions.checkArgument(!Strings.isNullOrEmpty(cipherText), "消息摘要不能为空");
return Base64.decodeToString(cipherText);
}
/**
* 16进制加密
*
* @param password
* @return
*/
public static String encrytHex(String password) {
Preconditions.checkArgument(!Strings.isNullOrEmpty(password), "不能为空");
byte[] bytes = password.getBytes();
return Hex.encodeToString(bytes);
}
/**
* 16进制解密
* @param cipherText
* @return
*/
public static String decryptHex(String cipherText) {
Preconditions.checkArgument(!Strings.isNullOrEmpty(cipherText), "消息摘要不能为空");
return new String(Hex.decode(cipherText));
}
public static String generateKey()
{
AesCipherService aesCipherService=new AesCipherService();
Key key=aesCipherService.generateNewKey();
return Base64.encodeToString(key.getEncoded());
}
/**
* 对密码进行md5加密,并返回密文和salt，包含在User对象中
* @param username 用户名
* @param password 密码
* @return 密文和salt
*/
public static AdminUser md5Password(String username,String password){
Preconditions.checkArgument(!Strings.isNullOrEmpty(username),"username不能为空");
Preconditions.checkArgument(!Strings.isNullOrEmpty(password),"password不能为空");
SecureRandomNumberGenerator secureRandomNumberGenerator=new SecureRandomNumberGenerator();
String salt= secureRandomNumberGenerator.nextBytes().toHex();
//组合username,两次迭代，对密码进行加密
return new Md5Hash(password,username+salt,2).toBase64();
}
public static void main(String[] args) {
System.out.println(getUser().getUserName());
String password = "admin";
String cipherText = encrytHex(password);
System.out.println(password + "hex加密之后的密文是：" + cipherText);
String decrptPassword=decryptHex(cipherText);
System.out.println(cipherText + "hex解密之后的密码是：" + decrptPassword);
String cipherText_base64 = encrytBase64(password);
System.out.println(password + "base64加密之后的密文是：" + cipherText_base64);
String decrptPassword_base64=decryptBase64(cipherText_base64);
System.out.println(cipherText_base64 + "base64解密之后的密码是：" + decrptPassword_base64);
String h64= H64.encodeToString(password.getBytes());
System.out.println(h64);
String salt="7road";
String cipherText_md5= new Md5Hash(password,salt,4).toHex();
System.out.println(password+"通过md5加密之后的密文是："+cipherText_md5);
System.out.println(generateKey());
System.out.println("==========================================================");
AesCipherService aesCipherService=new AesCipherService();
aesCipherService.setKeySize(128);
Key key=aesCipherService.generateNewKey();
String aes_cipherText= aesCipherService.encrypt(password.getBytes(),key.getEncoded()).toHex();
System.out.println(password+" aes加密的密文是："+aes_cipherText);
String aes_mingwen=new String(aesCipherService.decrypt(Hex.decode(aes_cipherText),key.getEncoded()).getBytes());
System.out.println(aes_cipherText+" aes解密的明文是："+aes_mingwen);
}
}