# RCX

**Repository Path**: mirrors_toolgood/RCX

## Basic Information

- **Project Name**: RCX
- **Description**: The RCX algorithm is improved based on the RC4 algorithm, and performance is almost the same.
- **Primary Language**: Unknown
- **License**: MIT
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2021-10-22
- **Last Updated**: 2026-03-01

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

 

RCX算法基于RC4算法改进，性能相差不太。

The RCX algorithm is improved based on the RC4 algorithm, and performance is almost the same.
 
#### RCX算法、RCY算法、RC4算法比较 （Comparisons of RCX, RCY and RC4 algorithms ）

编码类型(Encoding)：ASCII

密钥(secret key)：ToolGood  

输出数据类型(output data type)：Base64_Url
```` csharp
RC4('ABCDDDDDDDDDDDDDDDDDDDDDD') => mR6mGyRZ9ElDV7acIA3dPq_MAN4CiyW9yA

RC4('ACBDDDDDDDDDDDDDDDDDDDDDD') => mR-nGyRZ9ElDV7acIA3dPq_MAN4CiyW9yA

RC4('CBADDDDDDDDDDDDDDDDDDDDDD') => mx6kGyRZ9ElDV7acIA3dPq_MAN4CiyW9yA

RC4('1234567891234567891234567') => 6W7Wa1UrhzU-IsDrUHyvTdOxdah1-1TPuw

RC4('1234567800034567891234567') => 6W7Wa1UrhzU3I8LrUHyvTdOxdah1-1TPuw

 

RCX('ABCDDDDDDDDDDDDDDDDDDDDDD') => mQQrSDdzTV7_Ys3s0uMpSV3GD55mxHvFfg

RCX('ACBDDDDDDDDDDDDDDDDDDDDDD') => mQXUsAPCJnW082ShRU_UUxFy2_CCGk04Zg

RCX('CBADDDDDDDDDDDDDDDDDDDDDD') => m80-OvKvTV7_Ys3spYaA0HVreSyZrQPZDw

RCX('1234567891234567891234567') => 6TvQKirJa30sDUWQjHVtuSNN_KoGIb7OVQ

RCX('1234567800034567891234567') => 6TvQKirJa30lIP-dpT9y4eJPSNeMzFgrhA


ThreeRCX('ABCDDDDDDDDDDDDDDDDDDDDDD') => P7ZZsw0hmXDGylnYMCmiaISKsvmkQZCNJg

ThreeRCX('ACBDDDDDDDDDDDDDDDDDDDDDD') => TTsrMehtzvOWO7a-KYh9x6GQa36zNj8CTQ

ThreeRCX('CBADDDDDDDDDDDDDDDDDDDDDD') => Vui-aiMNvIK-ozqOUVsSccrM__W6arUJQQ

ThreeRCX('1234567891234567891234567') => sQAd5pyGScLkgfWt5sHaJsCCA_hRafzvgA

ThreeRCX('1234567800034567891234567') => dKT7qYYvWV-xjmLNCoM-HPcHZr-9ecilzg


RCY('ABCDDDDDDDDDDDDDDDDDDDDDD') => RTpQcXF5L-ylWYGeWRf8wMCecXHy4ABlug

RCX('ACBDDDDDDDDDDDDDDDDDDDDDD') => RTsgQRPAgEChJvK2tkMLtg55cXHAR68YBQ

RCY('CBADDDDDDDDDDDDDDDDDDDDDD') => R19cceZXygsOfoDsJm4myqXgwMDAR68YBQ

RCY('1234567891234567891234567') => NWB6fjYys97HT4T3sABUuXS7w5q3HR6PYw

RCY('1234567800034567891234567') => NWB6fjYys97Own-xxp15AgUE60FYsAV_ZQ


ThreeRCY('ABCDDDDDDDDDDDDDDDDDDDDDD') => hSclXtNhUKgh5xD5LyGAp9a4eNH1btHobQ

ThreeRCY('ACBDDDDDDDDDDDDDDDDDDDDDD') => pR9wz1Pm18VHQVFttsYF3ryqR6RtipsVFw

ThreeRCY('CBADDDDDDDDDDDDDDDDDDDDDD') => Z5eewmvC6roXNLKFvzTn8_4IgIjtQco8xQ

ThreeRCY('1234567891234567891234567') => QQHv2CJoIoREo0VRVrH9QFYDl_piBJ9QbA

ThreeRCY('1234567800034567891234567') => ZacKM0jFxevnI39XuSWCxOu1nc4krgC2hA

`````

从上面的代码，可以明显看出RC4算法加密的缺点，而数据经过RCX算法加密后变得无序。

From the above code, you can clearly see the shortcomings of RC4 algorithm encryption,But the data is encrypted by the RCX algorithm and becomes disordered. 

####  测试RCX、RCY算法的性能(Testing the performance of the RCX and RCY algorithm)

数据长度(data length)：10000

加密次数(encryption count)：1000
 
RCX => 72ms

RCY => 66ms



#### 核心代码（Core code ）
RCX算法采用[明文]与[密文]对密码盘进行调换，并且对 j 进行修改: j=j+[明文]+[密文] 。

The RCX algorithm uses [plain text] and [ciphertext] to swap the cipher disk, and modify j: j = j + [plain text] + [ciphertext].
```` csharp
    public class RCX
    {
         private const int keyLen = 256;
 
        /// <summary>
        /// Encrypt
        /// </summary>
        /// <param name="data"></param>
        /// <param name="pass"></param>
        /// <returns></returns>
        public static byte[] Encrypt(byte[] data, byte[] pass)
        {
            if (data == null) throw new ArgumentNullException("data");
            if (pass == null) throw new ArgumentNullException("pass");

            byte[] mBox = GetKey(pass, keyLen);
            byte[] output = new byte[data.Length];
            int i = 0, j = 0;
            for (int offset = 0; offset < data.Length; offset++) {
                i = (++i) & 0xFF;
                j = (j + mBox[i]) & 0xFF;

                byte a = data[offset];
                byte c = (byte)(a ^ mBox[(mBox[i] + mBox[j]) & 0xFF]);
                output[offset] = c;

                byte temp2 = mBox[c];
                mBox[c] = mBox[a];
                mBox[a] = temp2;
                j = (j + a + c);
            }
            return output;
        }
 
        private static byte[] GetKey(byte[] pass, int kLen)
        {
            byte[] mBox = new byte[kLen];
            for (Int64 i = 0; i < kLen; i++) {
                mBox[i] = (byte)i;
            }
            Int64 j = 0;
            for (Int64 i = 0; i < kLen; i++) {
                j = (j + mBox[i] + pass[i % pass.Length]) % kLen;
                byte temp = mBox[i];
                mBox[i] = mBox[j];
                mBox[j] = temp;
            }
            return mBox;
        }
    }
`````


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