Subversion Repositories filter_foundry

Rev

Rev 272 | Go to most recent revision | Show entire file | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 272 Rev 276
Line 12... Line 12...
12 
 
 12 
 
13 
## Implementation
 13 
## Implementation
14 
 
 14 
 
15 
Defined in **ff.h**, implemented in **make.c**:
 15 
Defined in **ff.h**, implemented in **make.c**:
16 
 
 16 
 
17 
    void obfusc(PARM_T* pparm);
 17 
    void obfusc(PARM_T* pparm, unsigned int seed);
18 
    void deobfusc(PARM_T* pparm);
 18 
    void deobfusc(PARM_T* pparm);
19 
 
 19 
 
- 
 
 20 
### Obfuscation "Version 4"
- 
 
 21 
 
- 
 
 22 
Introduced in **Filter Foundry 1.7.0.7** [08-Aug-2021]
- 
 
 23 
 
- 
 
 24 
It is not compiler-dependant, but different between every standalone filter.
- 
 
 25 
 
- 
 
 26 
The binary code of the 8BF file will be manipulated during building
- 
 
 27 
in order to store the seed into the `deobfusc()` function.
- 
 
 28 
This allows that 32 bit and 64 bit filters are "cross built".
- 
 
 29 
 
- 
 
 30 
Algorithm: XOR shift like in version 2, but the seed is individual for
- 
 
 31 
each individual built standalone filter.
- 
 
 32 
 
- 
 
 33 
The value "4" will be stored at position 0x30 (this field is not used in the `PARM` resource).
- 
 
 34 
 
20 
### Obfuscation "Version 3"
 35 
### Obfuscation "Version 3"
21 
 
 36 
 
22 
Introduced in **Filter Foundry 1.7.0.5** [30-Jul-2021]
 37 
Introduced in **Filter Foundry 1.7.0.5** [30-Jul-2021]
23 
 
 38 
 
24 
It is compiler-dependant, therefore the resource cannot be exchanged between plugins!
 39 
It is compiler-dependant, therefore the resource cannot be exchanged between plugins!