MicroDog GS-MH

The most secure,flexible, programmable hardware Dog for PC applications

MicroDog is a kind of intelligent software protection device. It contains a hardware Dog, which is attached to the parallel port of personal computers , and a set of interface software and protection tools which is suitable to most programming language.

Installation

Charactor

Protection algorithm

• Developer can customize protection algorithm factor( 256 kinds algorithms, 24 bits algorithm factor, which can have 16000000 kinds variety .).

AS Technique

• AS technology(the combination of API function calling and SHELL protection. ) is used by GS-MH MicroDog. AS technology combines the API functions calling and shell tools to form a new protection method. Because we have established the direct relationship between the GS-MH MicroDog shell tools and the API function, the calling of the API function can be run correctly only when the shell exist. If the software use the AS technology, Although the cracker decrypt the protection shell, the internal API calling will not work correctly, so the cracking can not continue.

Anti-tracing

• The original Data Exchange Random Noise Technology can antagonize all kinds of hardware and software debug tools such as Logic Analyzer etc.

• Maze technique: there are a lot of jump instructions which are used to interference the cracker, and will dynamic change application executing order. All of these will improve the application¡¯s anti-tracing ability.

Anti-sharing

• Data sharing device can be antagonized by MicroDog. Moreover, this function can be set by developer.

Password

• The password of MicroDog can be set by user. If the password is wrong, the data area can not be read and written.

The lock in MicroDog

• All the operation must be finished in the specific period. Normal operation period is less than the lock time. When tracing the program, operation time will exceed the lock time, and then MicroDog^? will return the error value.

Micropressor

• Microprocessor as the core. The program in the microprocessor is protected too, it can not be read out and written in. Therefore, MicroDog can not be copied.

Cascade

• The MicroDog can be cascaded one by one. It is convenient to user.

Usage

1. For .exe file( or .com file), there is a special tool used to encrypt these files directly.

2. For Dbase, Foxbase, FoxPro application( such as PRG, FOX, APP), there is a tool that can directly encrypt them.

3. For C or other compliable programming language, the OBJ file in the development set can offer the following functions used to interact with MicroDog:
   A) Check Dog.
   B) Data Conversion. 
   C) Write data to dog. 
   D) Read data from dog. 
   E) Get current number. 
   F) Disable share. 
   G) Set password.

4. Developer can add some instructions in their source code in order to access MicroDog, and adopt different action based on the return value or the existence of MicroDog existing.

5. After compiled the source code used the functions in the OBJ file, add the OBJ file to the project when linking.

Suitable Language & environment

• C, C++(MS, Turbo, Borland, High, NDP, Watcom), FORTRAN(MS, NDP, LAHEY, PowerStation), ASM, BASIC(BASCOM, Quick, True), FOXPRO(for DOS/WINDOWS), Java, Clipper, Foxbase, Dbase, ESE/COM/EXP, VisualBasic, VisualFoxpro, PowerBuilder, Delphi etc.

Operating System

• DOS, Windows 3.x / 9x / NT