Self.lblHash1.Caption := DECHash.THash_SHA1.CalcBinary, Self.editPassword.Text, TFormat_HEXL);

Self.editPassword.Text contains the original password whose hash I am attempting to match.

Also, what function is used (and could you please explain the parameters for that function) to re-create the original password once I use CalcBinary to create the hash?

Thank you.
Scott Gast

thank you for your comment. I will have a look at it as soon as I have some spare time.

Regards,
Arvid

I tried using DEC V5.2 but got incorrect results (perhaps misunderstanding the code…)

E.g. I tried the file from http://sourceforge.net/projects/clonezilla/files/clonezilla_live_stable/clonezilla-live-1.2.3-27.iso/download
and compared with the checksums herein
http://clonezilla.org/download/sourceforge/stable/checksums.php
but the results for both were incorrect

This is my code I used:
FHash:=THash_MD5.Create;
// or FHash:=THash_SHA1.Create;
with FHash do begin
try
Init;
CalcFile(FFName, TFormat_HEXL);
Done;
finally
mmo.Lines.Add(Format(‘File: %s’, [edFName.Text]));
mmo.Lines.Add(DigestStr(TFormat_HEX)]));
Free;
end;

What is wrong as with another package (DCPcrypt package) I got the correct/same answers.

I already considered setting up a project page for the DEC. Check back to my blog, I’ll publish it here as soon as I am ready.

But: Regarding your current problem there is no one-step solution. The DEC 3 had been out for several years, even the DEC 5.1 was available since ~ 2004 iirc. There are so many breaking changes which where made long before I had taken care of the source, so every compatibility issue is a time-consuming challange on it’s own. Sorry to say that.

Cheers,
Arvid

Is there any forum support / help for DEC 5.2 ?

A used 2.2 version of DEC, but impossible to decrypt 2.2 crypted material with 5.2 routines.

Here is my Encode routine for 2.2 :

with TCipher_Blowfish.Create do
try
IncludeHashKey := True;
InitKey(AnsiString(myKey), nil);
try
DecodeStream(InputStream, OutputStream, InputStream.Size – Hash.DigestKeySize);
except
Result := False;
end;

2.2 version uses SHA1 default class for key, and include it at begining of crypted stream, so I’ve try (and a lot of others ways) someting like this with DEC 5.2 :

Buf := AllocMem(20); // Size of Hash.Digest in 2.2
InputStream.Read(Buf^, 20);

with DECCipher.TCipher_Blowfish.Create do
try
Mode := cmCBCx; // CTSx doesn’t work
Init(Buf); // Init(THash_SHA1.KDFx(myKey, RandomBinary(16), Context.KeySize) doesn’t work better
DecodeStream(InputStream, OutputStream, InputStream.Size – 20);
finally
Free;
end;

Nothing is working, i’m desperate…
Someone to help me ?
Thanks…

the package is complete.

The DEC 5 is a complete rewrite of the DEC 3.x. You will likely experience incompatibilities, especially when talking about the proprietary block chaining modes and the CipherManager components you’d mentioned.

Hagen already removed the CipherManager wrapper components in the year 2006. I cannot port something to Delphi 2009 what isn’t there.

Cheers,
Arvid

P.S.: The 2006 version is found here: http://www.michael-puff.de/Developer/Delphi/Importe/Hagen_Reddmann/Archiv/

I want to upgrade to Delphi 2009 and I need to use the Cipher tools. And the components uploaded in Torry’s page are uncompleted. Where can I download the correct version? Any link?

Thanks!!

@Thomas
Torry missed the last update from Michael’s Website so the checksum was different. I started an update process for the Torry entry but this will take some time as it has to be reviewed by them.

Thank you for pointing to this!

Cheers,
Arvid

It seems that the downloads at torry.net do not match the MD5 and SHA256-haashes (I did not test the others). However, the download from Luckie’s page works fine and the hashes are correct.

Thank you!