Encrypt & Compression a file failed (wodCrypt)
by clement su, Monday, January 02, 2012, 08:47 (4710 days ago)
I use the code below to encrypt & compress a very large text file (4.07 GB ) , but failed (The length of result file is 792 bytes). And version of wodCrypt.dll is 2.1.4 .
File size list of testing:
Brfore After
1.01 GB 11.2 MB
2.03 GB 22.5 MB
3.05 GB 33.8 MB
4.07 GB 792 KB
5.08 GB 12.0 MB
Dim srcfile As New FileBlob
Dim destfile As New FileBlob
Set oCrypt = New wodCryptCom
oCrypt.Type = TripleDES
oCrypt.InitVector = 123
oCrypt.SecretKey = Now
oCrypt.Compression = GZipCompression
oCrypt.Optimized = False
srcfile.FileName = txtSource.Text
destfile.FileName = txtDest.Text
oCrypt.Encrypt srcfile, destfile
Please advise.
Thanks
Re: Encrypt & Compression a file failed
by woddrazen, Monday, January 02, 2012, 10:02 (4710 days ago) @ clement su
Hi,
I think I was able to duplicate the issue.
I will now transfer this issue to our developers to see if they can do the same in debug mode, and determine why this happens.
We will send you reply when we have more info about it.
Regards,
Drazen
Re: Encrypt & Compression a file failed
by wodSupport, Monday, January 02, 2012, 23:07 (4709 days ago) @ woddrazen
Clement,
I checked it out, current IBlob interface doesn't allow files larger than 4.7gb to be processed, since it cannot store larger numbers in LONG value.
We will fix this, but it's going to take 3-4 days, and make significant changes to wodCrypt to handle large files.
I'll let you know when we have something to test.
Kreso
Re: Encrypt & Compression a file failed
by clement su, Monday, January 09, 2012, 07:49 (4703 days ago) @ wodSupport
Hi
Now we can encrypt and compression a file over 4.7Gb with new dll ( Ver: 2.2.0.97 ) , but fail in decrypt and uncompression . The file size after decrypt and uncompression is 72.7 MB .
Please check it ASAP .
Re: Encrypt & Compression a file failed
by wodDamir, Monday, January 09, 2012, 14:10 (4702 days ago) @ clement su
Hi,
We're still in process of implementing this. We'll let you know immediately as we update component with these changes.
Regards,
Damba
Re: Encrypt & Compression a file failed
by woddrazen, Wednesday, January 11, 2012, 18:55 (4700 days ago) @ wodDamir
Hi,
Can you please download latest version and try it again?
Let us know how it goes.
Drazen
Re: Encrypt & Compression a file failed
by clement su, Thursday, January 12, 2012, 10:04 (4700 days ago) @ woddrazen
Hi
Decrypt and uncompress fail in 2gb , 3gb and 4gb files
The version of component is 2.2.0.98.
BR
Clement
Re: Encrypt & Compression a file failed
by woddrazen, Thursday, January 12, 2012, 10:08 (4700 days ago) @ clement su
Clement,
Can you maybe show us exact code snippet you are using? So we can duplicate this on our side.
Drazen
Re: Encrypt & Compression a file failed
by clement su, Thursday, January 12, 2012, 11:16 (4699 days ago) @ woddrazen
Hi
program code as follow:
Private Sub cmdDecrypt_Click()
Dim srcfile As New FileBlob
Dim destfile As New FileBlob
Set oCrypt = New wodCryptCom
If Check1.Value = 1 Then
oCrypt.Type = TripleDES
oCrypt.InitVector = 123
oCrypt.SecretKey = Now
Else
oCrypt.Type = None
End If
If Check1.Value = 1 Then
oCrypt.Optimized = True
Else
oCrypt.Optimized = False
End If
oCrypt.Compression = GZipCompression
srcfile.FileName = txtSourceDec.Text
destfile.FileName = txtDestDec.Text
oCrypt.Decrypt srcfile, destfile
Set srcfile = Nothing
Set destfile = Nothing
MsgBox Decryption Complete
End Sub
Private Sub cmdEncrypt_Click()
Dim srcfile As New FileBlob
Dim destfile As New FileBlob
Dim a As IStream
Set oCrypt = New wodCryptCom
If Check1.Value = 1 Then
oCrypt.Type = TripleDES
oCrypt.InitVector = 123
oCrypt.SecretKey = Now
Else
oCrypt.Type = None
End If
oCrypt.Compression = GZipCompression
If Check1.Value = 1 Then
oCrypt.Optimized = True
Else
oCrypt.Optimized = False
End If
srcfile.FileName = txtSource.Text
destfile.FileName = txtDest.Text
oCrypt.Encrypt srcfile, destfile
MsgBox Encyption Complete
End Sub
Re: Encrypt & Compression a file failed
by woddrazen, Thursday, January 12, 2012, 15:50 (4699 days ago) @ clement su
Clement,
I just finished with testing using your code snippet. In all my tests component works as expected.
I was testings with 2GB and 5GB file and I can decrypt data without any problem.
Can you please confirm that you are using latest version?
You can check version number inside wodCrypt Version Property.
[code]MsgBox crypt1.Version[/code]
if problem persist, can you maybe send us your sample to techsupport@weonlydo.com ?
Also, which file type you encrypt and decrypt in your test and which OS you are using?
Drazen
