Subversion Repositories decoder

Compare Revisions

Regard whitespace Rev 26 → Rev 27

/trunk/Private/dc4-spec.txt
33,7 → 33,7
This file format is NOT used by (De)Coder.
It is only the guideline of the DC4-Format.
Hagen Reddmann posted the demo-algorithm in this topic:
https://www.delphipraxis.net/topic79794,0,asc,0.html (in German)
https://www.delphipraxis.net/66783-sichere-verschluesselung-von-dateien-mit-dem-dec-5-1-a.html (in German)
 
---------------------------------------------------------------------------------------------------
Offset Type Size Content/Description
110,7 → 110,7
Long 4 Size of data
Binary var DEC 5.1c encrypted data; Password = Hash->KDfx(User-Password, Seed); KDFx is proprietary to DEC
Byte 1 Size of CalcMAC
Binary 0-255 CalcMAC; Size depends on cipher algorithm and cipher mode. The algorithms of DEC give out CalcMAC with the length 16-64.
Binary 0-255 DEC "CalcMAC"; Size depends on cipher algorithm and cipher mode. The algorithms of DEC give out CalcMAC with the length 16-64.
---------------------------------------------------------------------------------------------------