cn.hutool.core.text.PasswdStrength Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of hutool-all Show documentation
Show all versions of hutool-all Show documentation
Hutool是一个小而全的Java工具类库，通过静态方法封装，降低相关API的学习成本，提高工作效率，使Java拥有函数式语言般的优雅，让Java语言也可以“甜甜的”。
package cn.hutool.core.text;
import cn.hutool.core.util.StrUtil;
/**
* 检测密码强度
* 来自：https://github.com/venshine/CheckPasswordStrength
*
* @author venshine
* @since 5.7.3
*/
public class PasswdStrength {
/**
* 密码等级枚举
*/
public enum PASSWD_LEVEL {
EASY, MIDIUM, STRONG, VERY_STRONG, EXTREMELY_STRONG
}
/**
* 字符类型枚举
*/
public enum CHAR_TYPE {
NUM, SMALL_LETTER, CAPITAL_LETTER, OTHER_CHAR
}
/**
* 简单密码字典
*/
private final static String[] DICTIONARY = {"password", "abc123", "iloveyou", "adobe123", "123123", "sunshine",
"1314520", "a1b2c3", "123qwe", "aaa111", "qweasd", "admin", "passwd"};
/**
* 数字长度
*/
private final static int[] SIZE_TABLE = {9, 99, 999, 9999, 99999, 999999, 9999999, 99999999, 999999999,
Integer.MAX_VALUE};
/**
* 检查密码的健壮性
*
* @param passwd 密码
* @return strength level
*/
public static int check(String passwd) {
if (null == passwd) {
throw new IllegalArgumentException("password is empty");
}
int len = passwd.length();
int level = 0;
// increase points
if (countLetter(passwd, CHAR_TYPE.NUM) > 0) {
level++;
}
if (countLetter(passwd, CHAR_TYPE.SMALL_LETTER) > 0) {
level++;
}
if (len > 4 && countLetter(passwd, CHAR_TYPE.CAPITAL_LETTER) > 0) {
level++;
}
if (len > 6 && countLetter(passwd, CHAR_TYPE.OTHER_CHAR) > 0) {
level++;
}
if (len > 4 && countLetter(passwd, CHAR_TYPE.NUM) > 0 && countLetter(passwd, CHAR_TYPE.SMALL_LETTER) > 0
|| countLetter(passwd, CHAR_TYPE.NUM) > 0 && countLetter(passwd, CHAR_TYPE.CAPITAL_LETTER) > 0
|| countLetter(passwd, CHAR_TYPE.NUM) > 0 && countLetter(passwd, CHAR_TYPE.OTHER_CHAR) > 0
|| countLetter(passwd, CHAR_TYPE.SMALL_LETTER) > 0 && countLetter(passwd, CHAR_TYPE.CAPITAL_LETTER) > 0
|| countLetter(passwd, CHAR_TYPE.SMALL_LETTER) > 0 && countLetter(passwd, CHAR_TYPE.OTHER_CHAR) > 0
|| countLetter(passwd, CHAR_TYPE.CAPITAL_LETTER) > 0 && countLetter(passwd, CHAR_TYPE.OTHER_CHAR) > 0) {
level++;
}
if (len > 6 && countLetter(passwd, CHAR_TYPE.NUM) > 0 && countLetter(passwd, CHAR_TYPE.SMALL_LETTER) > 0
&& countLetter(passwd, CHAR_TYPE.CAPITAL_LETTER) > 0 || countLetter(passwd, CHAR_TYPE.NUM) > 0
&& countLetter(passwd, CHAR_TYPE.SMALL_LETTER) > 0 && countLetter(passwd, CHAR_TYPE.OTHER_CHAR) > 0
|| countLetter(passwd, CHAR_TYPE.NUM) > 0 && countLetter(passwd, CHAR_TYPE.CAPITAL_LETTER) > 0
&& countLetter(passwd, CHAR_TYPE.OTHER_CHAR) > 0 || countLetter(passwd, CHAR_TYPE.SMALL_LETTER) > 0
&& countLetter(passwd, CHAR_TYPE.CAPITAL_LETTER) > 0 && countLetter(passwd, CHAR_TYPE.OTHER_CHAR) > 0) {
level++;
}
if (len > 8 && countLetter(passwd, CHAR_TYPE.NUM) > 0 && countLetter(passwd, CHAR_TYPE.SMALL_LETTER) > 0
&& countLetter(passwd, CHAR_TYPE.CAPITAL_LETTER) > 0 && countLetter(passwd, CHAR_TYPE.OTHER_CHAR) > 0) {
level++;
}
if (len > 6 && countLetter(passwd, CHAR_TYPE.NUM) >= 3 && countLetter(passwd, CHAR_TYPE.SMALL_LETTER) >= 3
|| countLetter(passwd, CHAR_TYPE.NUM) >= 3 && countLetter(passwd, CHAR_TYPE.CAPITAL_LETTER) >= 3
|| countLetter(passwd, CHAR_TYPE.NUM) >= 3 && countLetter(passwd, CHAR_TYPE.OTHER_CHAR) >= 2
|| countLetter(passwd, CHAR_TYPE.SMALL_LETTER) >= 3 && countLetter(passwd, CHAR_TYPE.CAPITAL_LETTER) >= 3
|| countLetter(passwd, CHAR_TYPE.SMALL_LETTER) >= 3 && countLetter(passwd, CHAR_TYPE.OTHER_CHAR) >= 2
|| countLetter(passwd, CHAR_TYPE.CAPITAL_LETTER) >= 3 && countLetter(passwd, CHAR_TYPE.OTHER_CHAR) >= 2) {
level++;
}
if (len > 8 && countLetter(passwd, CHAR_TYPE.NUM) >= 2 && countLetter(passwd, CHAR_TYPE.SMALL_LETTER) >= 2
&& countLetter(passwd, CHAR_TYPE.CAPITAL_LETTER) >= 2 || countLetter(passwd, CHAR_TYPE.NUM) >= 2
&& countLetter(passwd, CHAR_TYPE.SMALL_LETTER) >= 2 && countLetter(passwd, CHAR_TYPE.OTHER_CHAR) >= 2
|| countLetter(passwd, CHAR_TYPE.NUM) >= 2 && countLetter(passwd, CHAR_TYPE.CAPITAL_LETTER) >= 2
&& countLetter(passwd, CHAR_TYPE.OTHER_CHAR) >= 2 || countLetter(passwd, CHAR_TYPE.SMALL_LETTER) >= 2
&& countLetter(passwd, CHAR_TYPE.CAPITAL_LETTER) >= 2 && countLetter(passwd, CHAR_TYPE.OTHER_CHAR) >= 2) {
level++;
}
if (len > 10 && countLetter(passwd, CHAR_TYPE.NUM) >= 2 && countLetter(passwd, CHAR_TYPE.SMALL_LETTER) >= 2
&& countLetter(passwd, CHAR_TYPE.CAPITAL_LETTER) >= 2 && countLetter(passwd, CHAR_TYPE.OTHER_CHAR) >= 2) {
level++;
}
if (countLetter(passwd, CHAR_TYPE.OTHER_CHAR) >= 3) {
level++;
}
if (countLetter(passwd, CHAR_TYPE.OTHER_CHAR) >= 6) {
level++;
}
if (len > 12) {
level++;
if (len >= 16) {
level++;
}
}
// decrease points
if ("abcdefghijklmnopqrstuvwxyz".indexOf(passwd) > 0 || "ABCDEFGHIJKLMNOPQRSTUVWXYZ".indexOf(passwd) > 0) {
level--;
}
if ("qwertyuiop".indexOf(passwd) > 0 || "asdfghjkl".indexOf(passwd) > 0 || "zxcvbnm".indexOf(passwd) > 0) {
level--;
}
if (StrUtil.isNumeric(passwd) && ("01234567890".indexOf(passwd) > 0 || "09876543210".indexOf(passwd) > 0)) {
level--;
}
if (countLetter(passwd, CHAR_TYPE.NUM) == len || countLetter(passwd, CHAR_TYPE.SMALL_LETTER) == len
|| countLetter(passwd, CHAR_TYPE.CAPITAL_LETTER) == len) {
level--;
}
if (len % 2 == 0) { // aaabbb
String part1 = passwd.substring(0, len / 2);
String part2 = passwd.substring(len / 2);
if (part1.equals(part2)) {
level--;
}
if (StrUtil.isCharEquals(part1) && StrUtil.isCharEquals(part2)) {
level--;
}
}
if (len % 3 == 0) { // ababab
String part1 = passwd.substring(0, len / 3);
String part2 = passwd.substring(len / 3, len / 3 * 2);
String part3 = passwd.substring(len / 3 * 2);
if (part1.equals(part2) && part2.equals(part3)) {
level--;
}
}
if (StrUtil.isNumeric(passwd) && len >= 6 && len <= 8) { // 19881010 or 881010
int year = 0;
if (len == 8 || len == 6) {
year = Integer.parseInt(passwd.substring(0, len - 4));
}
int size = sizeOfInt(year);
int month = Integer.parseInt(passwd.substring(size, size + 2));
int day = Integer.parseInt(passwd.substring(size + 2, len));
if (year >= 1950 && year < 2050 && month >= 1 && month <= 12 && day >= 1 && day <= 31) {
level--;
}
}
for (String s : DICTIONARY) {
if (passwd.equals(s) || s.contains(passwd)) {
level--;
break;
}
}
if (len <= 6) {
level--;
if (len <= 4) {
level--;
if (len <= 3) {
level = 0;
}
}
}
if (StrUtil.isCharEquals(passwd)) {
level = 0;
}
if (level < 0) {
level = 0;
}
return level;
}
/**
* Get password strength level, includes easy, midium, strong, very strong, extremely strong
*
* @param passwd 密码
* @return 密码等级枚举
*/
public static PASSWD_LEVEL getLevel(String passwd) {
int level = check(passwd);
switch (level) {
case 0:
case 1:
case 2:
case 3:
return PASSWD_LEVEL.EASY;
case 4:
case 5:
case 6:
return PASSWD_LEVEL.MIDIUM;
case 7:
case 8:
case 9:
return PASSWD_LEVEL.STRONG;
case 10:
case 11:
case 12:
return PASSWD_LEVEL.VERY_STRONG;
default:
return PASSWD_LEVEL.EXTREMELY_STRONG;
}
}
/**
* Check character's type, includes num, capital letter, small letter and other character.
* 检查字符类型
*
* @param c 字符
* @return 类型
*/
private static CHAR_TYPE checkCharacterType(char c) {
if (c >= 48 && c <= 57) {
return CHAR_TYPE.NUM;
}
if (c >= 65 && c <= 90) {
return CHAR_TYPE.CAPITAL_LETTER;
}
if (c >= 97 && c <= 122) {
return CHAR_TYPE.SMALL_LETTER;
}
return CHAR_TYPE.OTHER_CHAR;
}
/**
* 计算密码中指定字符类型的数量
*
* @param passwd 密码
* @param type 类型
* @return 数量
*/
private static int countLetter(String passwd, CHAR_TYPE type) {
int count = 0;
if (null != passwd) {
final int length = passwd.length();
if (length > 0) {
for (int i = 0; i < length; i++) {
if (checkCharacterType(passwd.charAt(i)) == type) {
count++;
}
}
}
}
return count;
}
/**
* calculate the size of an integer number
*
* @param x 值
* @return 数字长度
*/
private static int sizeOfInt(int x) {
for (int i = 0; ; i++)
if (x <= SIZE_TABLE[i]) {
return i + 1;
}
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy