MD5 加密部分
package
import lombok.extern.slf4j.Slf4j;
import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public static String md5(String source) {
// 1.判断 source 是否有效
if (source == null || source.length() == 0) {
// 2.如果不是有效的字符串抛出异常
throw new RuntimeException("字符串不可为空");
}
try {
// 3.获取 MessageDigest 对象
String algorithm = "md5";
MessageDigest messageDigest = MessageDigest.getInstance(algorithm);
// 4.获取明文字符串对应的字节数组
byte[] input = source.getBytes();
//执行加密
byte[] output = messageDigest.digest(input);
// 6.创建 BigInteger 对象
int signum = 1;
BigInteger bigInteger = new BigInteger(signum, output);
// 7.按照 16 进制将 bigInteger 的值转换为大写字符串
int radix = 16;
String encoded = bigInteger.toString(radix).toUpperCase();
return encoded;
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
log.error("e:{}", e);
return null;
}
}
public static void main(String[] args) {
String pwd = MD5Utils.md5("123456");
System.out.println(pwd);
}
盐值
public static String getSalt() {
return UUID.randomUUID().toString().replace("-", "");
}