Arvid’s Blog @ digivendo

Thanks!

Would it be possible for you to publish the SHA256 hash of DEC 5.2 package, so we can verify the version downloaded from Torry is not modified?

Thanks again! And keep up the great work!

Hi Arvid,

Speaking about encryption, do you know if the DCP library (Delphi Ciphers and Hashs) works under D2009 ? I use them under D2007 with great success, and I’m planning to upgrade soon… Thanks.

Very nice Job!

Thank you!

Hi 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.

Hi!

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!!

Hi !

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…