原密码校验

core/src/main/java/com/mooctest/crowd/domain/util/MD5Base64Util.java

@@ -0,0 +1,416 @@
+package com.mooctest.crowd.domain.util;
+
+/**
+ * @author guochao
+ * @date 2020-06-21 15:16
+ */
+import java.io.ByteArrayOutputStream;
+import java.io.UnsupportedEncodingException;
+import java.net.URLDecoder;
+import java.net.URLEncoder;
+import java.security.MessageDigest;
+
+/**
+ 2018年3月19日
+ **/
+public class MD5Base64Util {
+
+    public static void main(String[] args)  {
+
+
+        String text ="123456";
+        System.out.println("md5:"+MD5Base64Util.EncryptionByMD5(text));
+        System.out.println("Base64:"+MD5Base64Util.EncryptionByBase64(text));
+        System.out.println("md5_Base64:"+MD5Base64Util.EncryptionByMD5AndBase64(text)+"\n");
+
+        String text2 =MD5Base64Util.EncryptionByBase64(text);//MTIzNDU2
+        System.out.println(MD5Base64Util.decryptBase64(text2)+"\n");
+
+        String text3 =MD5Base64Util.EncryptionByMD5AndBase64(text);//4QrcOUm6Wau+VuBX8g+IPg==
+        System.out.println(MD5Base64Util.decryptBase64To(text3)+"\n");
+
+        // 解密
+        String decryptText = "/OqSD3QStdp74M9CuMk3WQ==";
+        System.out.println(MD5Base64Util.decryptBase64(decryptText)+"\n");
+
+    }
+
+    private final static char hexDigits[]={'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};
+    private static char[] base64EncodeChars = new char[] { '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', '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', '+', '/' };
+
+    private static byte[] base64DecodeChars = new byte[] { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, 54, 55,
+            56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
+            21, 22, 23, 24, 25, -1, -1, -1, -1, -1, -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46,
+            47, 48, 49, 50, 51, -1, -1, -1, -1, -1 };
+    /**
+     * MD5加密
+     * @param text
+     * @return String
+     */
+    public static String EncryptionByMD5(String text){
+        try {
+            byte[] btInput = text.getBytes();
+            // 获得MD5摘要算法的 MessageDigest 对象
+            MessageDigest mdInst = MessageDigest.getInstance("MD5");
+            // 使用指定的字节更新摘要
+            mdInst.update(btInput);
+            // 获得密文
+            byte[] md = mdInst.digest();
+            // 把密文转换成十六进制的字符串形式
+            int j = md.length;
+            char str[] = new char[j * 2];
+            int k = 0;
+            for (int i = 0; i < j; i++) {
+                byte byte0 = md[i];
+                str[k++] = hexDigits[byte0 >>> 4 & 0xf];
+                str[k++] = hexDigits[byte0 & 0xf];
+            }
+            return new String(str);
+        } catch (Exception e) {
+            e.printStackTrace();
+            return null;
+        }
+
+    }
+    /**
+     * MD5加密
+     * @param text
+     * @return byte[]
+     */
+    public static byte[] EncryptionByMD5T(String text){
+        try {
+            byte[] btInput = text.getBytes();
+            // 获得MD5摘要算法的 MessageDigest 对象
+            MessageDigest mdInst = MessageDigest.getInstance("MD5");
+            // 使用指定的字节更新摘要
+            mdInst.update(btInput);
+            // 获得密文
+            byte[] md = mdInst.digest();
+            return md;
+        } catch (Exception e) {
+            e.printStackTrace();
+            return null;
+        }
+
+    }
+    /**
+     * Base64加密
+     * @param text
+     * @return String
+     */
+    public static String EncryptionByBase64(String text) {
+        byte[] data=text.getBytes();
+        StringBuffer sb = new StringBuffer();
+        int len = data.length;
+        int i = 0;
+        int b1, b2, b3;
+
+        while (i < len) {
+            b1 = data[i++] & 0xff;
+            if (i == len) {
+                sb.append(base64EncodeChars[b1 >>> 2]);
+                sb.append(base64EncodeChars[(b1 & 0x3) << 4]);
+                sb.append("==");
+                break;
+            }
+            b2 = data[i++] & 0xff;
+            if (i == len) {
+                sb.append(base64EncodeChars[b1 >>> 2]);
+                sb.append(base64EncodeChars[((b1 & 0x03) << 4) | ((b2 & 0xf0) >>> 4)]);
+                sb.append(base64EncodeChars[(b2 & 0x0f) << 2]);
+                sb.append("=");
+                break;
+            }
+            b3 = data[i++] & 0xff;
+            sb.append(base64EncodeChars[b1 >>> 2]);
+            sb.append(base64EncodeChars[((b1 & 0x03) << 4) | ((b2 & 0xf0) >>> 4)]);
+            sb.append(base64EncodeChars[((b2 & 0x0f) << 2) | ((b3 & 0xc0) >>> 6)]);
+            sb.append(base64EncodeChars[b3 & 0x3f]);
+        }
+        return sb.toString();
+    }
+
+    /**
+     * Base64加密
+     * @param data
+     * @return String
+     */
+    public static String EncryptionByBase64(byte[] data) {
+        StringBuffer sb = new StringBuffer();
+        int len = data.length;
+        int i = 0;
+        int b1, b2, b3;
+
+        while (i < len) {
+            b1 = data[i++] & 0xff;
+            if (i == len) {
+                sb.append(base64EncodeChars[b1 >>> 2]);
+                sb.append(base64EncodeChars[(b1 & 0x3) << 4]);
+                sb.append("==");
+                break;
+            }
+            b2 = data[i++] & 0xff;
+            if (i == len) {
+                sb.append(base64EncodeChars[b1 >>> 2]);
+                sb.append(base64EncodeChars[((b1 & 0x03) << 4) | ((b2 & 0xf0) >>> 4)]);
+                sb.append(base64EncodeChars[(b2 & 0x0f) << 2]);
+                sb.append("=");
+                break;
+            }
+            b3 = data[i++] & 0xff;
+            sb.append(base64EncodeChars[b1 >>> 2]);
+            sb.append(base64EncodeChars[((b1 & 0x03) << 4) | ((b2 & 0xf0) >>> 4)]);
+            sb.append(base64EncodeChars[((b2 & 0x0f) << 2) | ((b3 & 0xc0) >>> 6)]);
+            sb.append(base64EncodeChars[b3 & 0x3f]);
+        }
+        return sb.toString();
+    }
+
+
+    /**
+     * 先MD5加密，再base64加密
+     * @param text
+     * @return String
+     */
+    public static String EncryptionByMD5AndBase64(String text){
+
+        return EncryptionByBase64(EncryptionByMD5T(text));
+    }
+
+    /**
+     * Base64 解密
+     * @return String
+     */
+    public static String decryptBase64(String text) {
+        byte[] data = text.getBytes();
+        int len = data.length;
+        ByteArrayOutputStream buf = new ByteArrayOutputStream(len);
+        int i = 0;
+        int b1, b2, b3, b4;
+
+        while (i < len)
+        {
+
+            /* b1 */
+            do
+            {
+                b1 = base64DecodeChars[data[i++]];
+            }
+            while (i < len && b1 == -1);
+            if (b1 == -1)
+            {
+                break;
+            }
+
+            /* b2 */
+            do
+            {
+                b2 = base64DecodeChars[data[i++]];
+            }
+            while (i < len && b2 == -1);
+            if (b2 == -1)
+            {
+                break;
+            }
+            buf.write((int) ((b1 << 2) | ((b2 & 0x30) >>> 4)));
+
+            /* b3 */
+            do
+            {
+                b3 = data[i++];
+                if (b3 == 61)
+                {
+                    return new String(buf.toByteArray());
+                }
+                b3 = base64DecodeChars[b3];
+            }
+            while (i < len && b3 == -1);
+            if (b3 == -1)
+            {
+                break;
+            }
+            buf.write((int) (((b2 & 0x0f) << 4) | ((b3 & 0x3c) >>> 2)));
+
+            /* b4 */
+            do
+            {
+                b4 = data[i++];
+                if (b4 == 61)
+                {
+                    return new String(buf.toByteArray());
+                }
+                b4 = base64DecodeChars[b4];
+            }
+            while (i < len && b4 == -1);
+            if (b4 == -1)
+            {
+                break;
+            }
+            buf.write((int) (((b3 & 0x03) << 6) | b4));
+
+        }
+
+        return new String(buf.toByteArray());
+
+    }
+
+    /**
+     * Base64 解密到MD5
+     * @return String
+     */
+    public static String decryptBase64To(String text) {
+        byte[] data = text.getBytes();
+        int len = data.length;
+        ByteArrayOutputStream buf = new ByteArrayOutputStream(len);
+        int i = 0;
+        int b1, b2, b3, b4;
+
+        while (i < len)
+        {
+
+            /* b1 */
+            do
+            {
+                b1 = base64DecodeChars[data[i++]];
+            }
+            while (i < len && b1 == -1);
+            if (b1 == -1)
+            {
+                break;
+            }
+
+            /* b2 */
+            do
+            {
+                b2 = base64DecodeChars[data[i++]];
+            }
+            while (i < len && b2 == -1);
+            if (b2 == -1)
+            {
+                break;
+            }
+            buf.write((int) ((b1 << 2) | ((b2 & 0x30) >>> 4)));
+
+            /* b3 */
+            do
+            {
+                b3 = data[i++];
+                if (b3 == 61)
+                {
+                    byte[] br = buf.toByteArray();
+                    // 把密文转换成十六进制的字符串形式
+                    int p = br.length;
+                    char str[] = new char[p * 2];
+                    int k = 0;
+                    for (int r = 0; r < p; r++) {
+                        byte byte0 = br[r];
+                        str[k++] = hexDigits[byte0 >>> 4 & 0xf];
+                        str[k++] = hexDigits[byte0 & 0xf];
+                    }
+                    return new String(str);
+                }
+                b3 = base64DecodeChars[b3];
+            }
+            while (i < len && b3 == -1);
+            if (b3 == -1)
+            {
+                break;
+            }
+            buf.write((int) (((b2 & 0x0f) << 4) | ((b3 & 0x3c) >>> 2)));
+
+            /* b4 */
+            do
+            {
+                b4 = data[i++];
+                if (b4 == 61)
+                {
+                    byte[] br = buf.toByteArray();
+                    // 把密文转换成十六进制的字符串形式
+                    int p = br.length;
+                    char str[] = new char[p * 2];
+                    int k = 0;
+                    for (int r = 0; r < p; r++) {
+                        byte byte0 = br[r];
+                        str[k++] = hexDigits[byte0 >>> 4 & 0xf];
+                        str[k++] = hexDigits[byte0 & 0xf];
+                    }
+                    return new String(str);
+                }
+                b4 = base64DecodeChars[b4];
+            }
+            while (i < len && b4 == -1);
+            if (b4 == -1)
+            {
+                break;
+            }
+            buf.write((int) (((b3 & 0x03) << 6) | b4));
+
+        }
+        byte[] br = buf.toByteArray();
+        // 把密文转换成十六进制的字符串形式
+        int p = br.length;
+        char str[] = new char[p * 2];
+        int k = 0;
+        for (int r = 0; r < p; r++) {
+            byte byte0 = br[r];
+            str[k++] = hexDigits[byte0 >>> 4 & 0xf];
+            str[k++] = hexDigits[byte0 & 0xf];
+        }
+        return new String(str);
+    }
+
+    /**
+     * 网络传输中文UTF-8加密，防止乱码
+     * @param text
+     * @return String
+     */
+    public static String netEnCoderUTF8(String text){
+        return netEnCoder(text,"UTF-8");
+    }
+
+    /***
+     * 网络传输中文UTF-8解码
+     * @param text
+     * @return String
+     */
+    public static String netEDeCoderUTF8(String text){
+        return netDecoder(text,"UTF-8");
+    }
+
+
+    /**
+     *
+     * @param text
+     * @param charsetName 字符集
+     * @return String
+     */
+    public static String netEnCoder(String text,String charsetName){
+        String result=null;
+        try {
+            result= URLEncoder.encode(text,charsetName);
+        } catch (UnsupportedEncodingException e) {
+            e.printStackTrace();
+        }
+        return result;
+    }
+
+    /**
+     *
+     * @param text
+     * @param charsetName 字符集
+     * @return String
+     */
+    public static String netDecoder(String text,String charsetName){
+        String result=null;
+        try {
+            result= URLDecoder.decode(text,charsetName);
+        } catch (UnsupportedEncodingException e) {
+            e.printStackTrace();
+        }
+        return result;
+    }
+
+}