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010Editor-keygen

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A keygen for 010Editor

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# 010Editor-keygen
A keygen for 010Editor

## 1. How does the key generated?

__NOTICE: The content of this section is just my suspection. I cannot guarantee that it is absolutely correct because there is no symbol information in `010Editor.exe` to confirm my suspection.__

There are 3 types of keys (also called passwords in 010Editor) that can activate 010Editor, which are

|Key Type      |Key Length|Format                  |
  |--------------|----------|------------------------|
  |Evaluation    |19 chars  |xxxx-xxxx-xxxx-xxxx     |
  |VersionLicense|19 chars  |xxxx-xxxx-xxxx-xxxx     |
  |TimeLicense   |24 chars  |xxxx-xxxx-xxxx-xxxx-xxxx|

The `x` in `Format` column represents a hex char and is case-insensitive if a letter.

Before I explain each kind of keys, there are some concepts I should give.

* __Daystamp:__ We know that timestamp is the number of seconds since `00:00:00 Jan. 1st, 1970`. Similarly, daystamp is the number of days since `Jan. 1st, 1970`. For example, the daystamp of `Jan. 2nd, 1970` is __1__ and `Jun. 23th, 2018` is __17705__.

* __Checksum:__ I'm not sure if it can be called `checksum`. But I do not have a better word to describe it. `Checksum` is a 4-bytes-long data and is related with some parameters. You can go to the definition of function `_010Editor::Keygen<_010Editor::KeyType::Base>::CalculateChecksum` in `_010EditorKeygen.hpp` to see how to calculate it. The function `CalculateChecksum` receives 4 parameters. There are

|Parameter            |Description                                                        |
    |---------------------|-------------------------------------------------------------------|
    |utf8_username        |The UTF-8 bytes of username that the key licensed to.              |
    |IsRegistrationVersion|`false` for `Evaluation` key only. Otherwise it must be `true`.    |
    |a3                   |An unknown parameter. So far it has an unclear meaning.            |
    |LicenseCount         |It represents how many users can use this license. Must be 1~1000. |

* __EncodedExpireDaystamp__: This is a 3-bytes-long data. The function `_010Editor::Keygen<_010Editor::KeyType::Base>::EncodeExpireDate` in `_010EditorKeygen.hpp` can calulate it. This function receives 2 parameters. There are

|Parameter           |Description                                              |
    |--------------------|---------------------------------------------------------|
    |DaystampOfExpiration|The daystamp of expiration. Must be less than 0x1000000. |
    |Seed                |A parameter used in encoding expire daystamp.            |

* __EncodedLicenseCount__: This is a 2-bytes-long data. The function `_010Editor::Keygen<_010Editor::KeyType::Base>::EncodeLicenseCount` in `_010EditorKeygen.hpp` can calulate it. This function receives only 1 parameter.

|Parameter          |Description                                          |
    |-------------------|-----------------------------------------------------|
    |DesiredLicenseCount|The license count your want. Must be Must be 1~1000. |

### 1.1 Evaluation Key

`Evaluation` key is generated by 8-bytes-long data. To make it clear, I use

```cpp
  unsigned char data[8];
  ```

to represent the 8-bytes-long data.

`Evaluation` key cannot make your 010Editor become registered version. It can only extend your 010Editor's trial period.

* __data[4] ~ data[7]__ are __Checksum__ and calculated by `CalculateChecksum` function where `IsRegistrationVersion = false`, `a3 = 255` and `LicenseCount = 1`. `utf8_username` is based on your input.

* __data[3]__ must be `0xFC`. It represents the type of key.

* __data[0] ~ data[2]__ are __EncodedExpireDaystamp__ and calculated by `EncodeExpireDate` function where `DaystampOfExpiration` is based on your input and `Seed` is __Checksum__.

Finally, the `Evaluation` key is the hex string of `data[8]` where 4 hex chars consist of a block and each block is joined by `"-"`(hyphen).

### 1.2 VersionLicense Key

`VersionLicense` key is also generated by 8-bytes-long data. To make it clear, I use

```cpp
  unsigned char data[8];
  ```

to represent the 8-bytes-long data, too.

`VersionLicense` key can only be used for specified version or the older. And it does not has time limit.

* __data[4] ~ data[7]__ are __Checksum__ and calculated by `CalculateChecksum` function where `IsRegistrationVersion = true`, `a3 = MajorVersion >= 2 ? 0 : MajorVersion`. `LicenseCount` and `utf8_username` are based on your input.

* __data[3]__ must be `0x9C`. It represents the type of key.

* __data[1] ~ data[2]__ are based on __EncodedLicenseCount__, __data[7]__ and __data[5]__. __EncodedLicenseCount__ can be calculated by `EncodeLicenseCount` function where `DesiredLicenseCount` is based on your input. 
   
     ```cpp
     data[1] = EncodedLicenseCount.bytes[1] ^ data[7];
     data[2] = EncodedLicenseCount.bytes[0] ^ data[5];
     ```

* __data[0]__ is based on `MajorVersion` and __data[6]__.

```cpp
     data[0] = MajorVersion;
     data[0] ^= 0xA7;
     data[0] -= 0x3D;
     data[0] ^= 0x18;
     data[0] ^= Password.data[6];
     ```

Finally, the `VersionLicense` key is the hex string of `data[8]` where 4 hex chars consist of a block and each block is joined by `"-"`(hyphen).

### 1.3 TimeLicense Key

`TimeLicense` key is generated by 10-bytes-long data which is different to `Evaluation` and `VersionLicense` key. To make it clear, I use

```cpp
  unsigned char data[10];
  ```

to represent the 10-bytes-long data.

`TimeLicense` key can be used for any kind of version. But it has time limit.

* __data[4] ~ data[7]__ are __Checksum__ and calculated by `CalculateChecksum` function where `IsRegistrationVersion = true`, `a3 = DaystampOfExpiration`. `DaystampOfExpiration`, `LicenseCount` and `utf8_username` are based on your input.

* __data[0], data[8] ~ data[9]__ are based on __EncodedExpireDaystamp__ and __data[4] ~ data[6]__. __EncodedExpireDaystamp__ can be calculated by `EncodeExpireDate` function where `Seed = 0x5B8C27` and `DaystampOfExpiration` is based on your input.

```cpp
    data[0] = EncodedExpireDaystamp.bytes[0] ^ data[6];
    data[8] = EncodedExpireDaystamp.bytes[1] ^ data[4];
    data[9] = EncodedExpireDaystamp.bytes[2] ^ data[5];
    ```

* __data[3]__ must be `0xAC`. It represents the type of key.

```cpp
    data[1] = EncodedLicenseCount.bytes[1] ^ data[7];
    data[2] = EncodedLicenseCount.bytes[0] ^ data[5];
    ```

Finally, the `TimeLicense` key is the hex string of `data[10]` where 4 hex chars consist of a block and each block is joined by `"-"`(hyphen).

## 2. How to build
In console:

```
cd cpp
g++ -std=c++11 main.cpp -o 010Editor-keygen.exe
```

## 3. How to use
Just run it.

Example:
```
E:\Github\010Editor-keygen\cpp>010Editor-keygen.exe
Input your name(English Only): DoubleLabyrinth
47AD-E1AC-D789-D133-2114

E:\Github\010Editor-keygen\cpp>
```

__NOTICE:__  
This key generated will expired after 2020-06-23. If you want to modify expire date, please modify variables named __ExpireYear__, __ExpireMonth__ and __ExpireDay__ in `main.cpp`.

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