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https://github.com/toolgood/RCX
The RCX algorithm is improved based on the RC4 algorithm, and performance is almost the same.
https://github.com/toolgood/RCX
rc4 rc4-algorithm rcx rcx-algorithm
Last synced: about 2 months ago
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The RCX algorithm is improved based on the RC4 algorithm, and performance is almost the same.
- Host: GitHub
- URL: https://github.com/toolgood/RCX
- Owner: toolgood
- License: mit
- Created: 2018-01-10T11:23:12.000Z (almost 7 years ago)
- Default Branch: master
- Last Pushed: 2019-10-14T12:31:01.000Z (about 5 years ago)
- Last Synced: 2024-11-07T21:24:40.772Z (about 2 months ago)
- Topics: rc4, rc4-algorithm, rcx, rcx-algorithm
- Language: C#
- Homepage:
- Size: 186 KB
- Stars: 7
- Watchers: 5
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
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;
///
/// Encrypt
///
///
///
///
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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