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https://github.com/teo-tsirpanis/hexlicense-mirror

A mirror of the once public HexLicense repository
https://github.com/teo-tsirpanis/hexlicense-mirror

delphi hexlicense license-management

Last synced: 22 days ago
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A mirror of the once public HexLicense repository

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README 

        
NOTE: This repository is a mirror of an once public repository formerly located at

https://bitbucket.org/cipher_diaz/hexlicense/src/master/. For unknown reasons, it was

either removed or turned private.



In https://jonlennartaasenden.wordpress.com/2018/09/06/hexlicense-patreon-and-all-that/ (archived on

https://web.archive.org/web/20191103192600/https://jonlennartaasenden.wordpress.com/2018/09/06/hexlicense-patreon-and-all-that/

and https://archive.is/zIbwx), the repository's original author released HexLicense under LGPL v3.



Because open source licenses cannot be revoked, and because this project is far too interesting to vanish like that,

I created this mirror.



Hexlicense 1.0.4

================



- "THexLicense.Automatic" property has been removed, license sessions must be 

  manually started in your code by calling BeginSession(). The reason for this is that

  the encryption layer could not be ready when HexLicense started. Before the encryption

  layer can report ready, the cipher-key must be generated; This must be done early,

  and the best place is the OnCreate event in either the main-form or a datamodule.



  Example:



	procedure TForm1.FormCreate(Sender: TObject);

	const

	  LCipher = '{2C2844FB-19D4-41CF-85BC-219864D460D9}';

	begin

	  // Build cipher key first

	  HexKeyRC41.Build(LCipher, SizeOf(LCipher));



	  // Make sure cipher is ready

	  if not HexKeyRC41.Ready then

	  begin

		// Start a new licensed session

	    HexLicense.BeginSession();

	  end else

	  raise Exception.Create('Internal error, code: 667');

	  // Note: You dont want to use informative exceptions when it comes to your

	  // license management system

	end;

	

- THexLicense had its own encryption methods that was used on the license packet.

  This has been removed since the whole point of separate encryption, was to 

  compartmentalize the functionality.

  

- THexEncoder.EncodePtr has been rewritten, now returns the size of the encoded data

- THexEncoder.DecodePtr has been rewritten, now returns the size of the decoded data

  NOTE: Depending on the cipher, the data produced when encoding can be larger than the.

        original. Likewise, encoded data can be smaller than the decoded result.

		Hence the actual size is now returned by both.

- THexEncoder.GetResultSizeOf() has been added. Like explained above, encoded/decoded data

  can have different sizes. The GetResultSizeOf() takes the encoded data-length, and returns

  a safe buffer-size to house the decoded version.



- Fixed a problem where properties were omitted in the FMX unit. For some reason the VCL_TARGET

  switch was used to check if generics is supported (which obviously is 100% wrong). We now use

  the switch for "modern filenames" as an indicator for generics. But that is a temporary "fix".

  Generics should get it's own switch.



- Various minor adjustments and refactoring.

	

Hexlicense 1.0.3

================



This intermediate update adds two important factors:



1. The inclusion of HexBuffers which brings a wealth of low-level data manipulation features

2. Hotfix of potential data loss [*]



* Potential data loss

Textual data should have been stored as shortstring, sadly it was stored using a vanilla string.

This causes potential loss of characters should it breach 255 characters.



Important:



This update is *NOT* binary compatible with previous generated license data.

To use this update, make sure customers activate using the new code.



We realize this is an inconvenience, and in Ironwood a secondary loader has been added that

will recognize the old format and attempt to handle it. This is optional.



Having a "backup-loader" does open up for potential weakness, we strongly suggest that you

use this new edition as much as possible. There will be no more changes to the original

HexLicense fileformat.



Ironwood has different components and it's own IO mechanisms.

Once out, Hexlicense classic (which is the current product line) is regarded as legacy.

It will be maintained ofcourse, and updated, but focus will then shift to Ironwood and server-side

solutions.



Thank you



Jon Lennart Aasenden