49 lines
1.8 KiB
Plaintext
49 lines
1.8 KiB
Plaintext
package com.nationalelectric.greenH5.utils;
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import java.io.UnsupportedEncodingException;
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public class EncryptUtil {
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public static final int C1 = 52845;
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public static final int C2 = 22719;
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public static String Encrypt(String mingwen, int Key) throws UnsupportedEncodingException //key=0x0610 加密函数
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{
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/*
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* liuyujing
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* 2019-08-29
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* Encrypt：餐卡系统二维码加密算法，餐卡系统为C#语言，转JAVA代码
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* mingwen：待加密字符串，常规格式：餐卡号_时间戳
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* Key：秘钥，Key=0x0610 ，必须是int，JAVA位移处理为32位
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* byte在C#中为无符号类型，JAVA的byte为有符号类型
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* byte[] szOut 在运算过程需要 & 0xFF 转为 无符号类型
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*/
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byte[] str = new byte[2];
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int length = mingwen.length();
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byte[] szOut = new byte[length];
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byte[] enCode = new byte[length * 2];
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int i,j;
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byte[] S = mingwen.getBytes();
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//szOut = S;
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// 初始化结果字符串
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for (i = 0; i < length; i++) // 依次对字符串中各字符进行操作
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{
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szOut[i] = (byte)(S[i] ^ (Key >> 8)); // 将密钥移位后与字符异或
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Key = (int)(((szOut[i]& 0xFF) + Key) * C1 + C2); // 产生下一个密钥
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//byte为有符号类型，& 0xFF转为无符号，与服务端C#算法统一
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}
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for (i = 0; i < length; i++) // 对加密结果进行转换
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{
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j = szOut[i]& 0xFF;
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str[0]=(byte)(65+j/26);
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str[1]=(byte)(65+j%26);
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//System.out.println((byte)(65+j/26));
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enCode[2*i] = str[0];
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enCode[2*i+1] = str[1];
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}
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//System.out.println(new String(enCode));
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return new String(enCode,"UTF-8");
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}
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}
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