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Vb.net Length Of The Data To Decrypt Is Invalid


Not the answer you're looking for? I asked for a short but complete example - and I'm afraid yours is neither. based on your response, i've modified the code where i read back the encrypted XML node as follows and then attempt to decrypt as follows: sUserName = oXmlReader.ReadString(); byte[] btUserNameCiphered = using System; using System.Drawing; using System.Collections; using System.ComponentModel; using System.Windows.Forms; using System.Data; using System.Xml; using System.IO; using Encryption; using System.Text; using Microsoft.Win32; namespace timeTracker { public class userSettings : System.Windows.Forms.Form { his comment is here

The IV should be random data, unrelated to the key being used, and a different IV should be used for every encryption. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed i can't include the entire encryption assembly, but will post the code that calls it. The second problem is that you are also deriving the IV from the password.

Length Of The Data To Decrypt Is Invalid C#

transformer.IV = initVec; ICryptoTransform transform = transformer.GetCryptoServiceProvider(bytesKey); CryptoStream decStream = new CryptoStream(memStreamDecryptedData, transform, CryptoStreamMode.Write); try { decStream.Write(bytesData, 0, bytesData.Length); } catch(Exception ex) { throw new Exception("Error while writing encrypted data to However 752 bytes results in an additional block (16 bytes) of output, which after Base64 encoding results in 1024 bytes. How does the FAA determine which format of location identifier to assign to an airport? writing a srtripped down console app to verify what i already know and have already shared with anybody reading this thread seems gratuitous and a waste of time.

i suspect this is something to do with the way i've read the XML userName value,but what and how to fix? i've used the sample code from msdn to create an encyption/decryption assembly as found here: http://msdn.microsoft.com/library/de...SecNetHT10.asp i'm able to encrypt and then decrypt data okay as in the following code: // Could you post a short but complete program which demonstrates the problem? There's a bug report here, but special characters don't seem to be the problem.

I would like to read it from the encrypted file and store in a string called strName as "Surojit".  Here is my code below.     Code Snippet Imports System

Imports Join Now For immediate help use Live now! If so, how could this be done? plaintext = srDecrypt.ReadToEnd() End Using End Using End Using End Using share|improve this answer edited Jan 27 '14 at 9:31 answered Jan 27 '14 at 5:48 Sameer 1,67211016 can't

For decryption set the key the same way as for encryption but set rijndaelCipher.IV to the transmitted IV value prior to calling CreateDecryptor(). –Iridium Dec 23 '13 at 12:46 Thanks. Simply fill out this brief survey by 11:45 p.m. Here are the code I used to test, the same as yours I just changed them to static class Program { Go to Solution 4 3 2 Participants joechina(4 comments) LVL

Transformfinalblock Length Of The Data To Decrypt Is Invalid

Get 1:1 Help Now Advertise Here Enjoyed your answer? See the matching Convert.FromBase64String method. Length Of The Data To Decrypt Is Invalid C# Browse other questions tagged .net encryption cryptography .net-2.0 rijndaelmanaged or ask your own question. Flushfinalblock Length Of The Data To Decrypt Is Invalid. But it encrypts the any length of characters.

Is the computer cheating at Dice Poker? http://jscience.net/is-invalid/oab-version-2-is-invalid.html If it works, you'll be able to plug the same sample string into your real code, see what comes out in the XML, and work out whether it's the encryption which but when i right after try to decrypt it i got an:"Length of the data to decrypt is invalid." error...it happens when i try to FlushFinalBlock()here is my code for both csEncrypt.Write(toEncrypt, 0, toEncrypt.Length); csEncrypt.FlushFinalBlock(); //Get encrypted array of bytes. Padding Is Invalid And Cannot Be Removed.

That implies it isn't coded the same way as originally. 0 Message Author Closing Comment by:codefinger ID: 396734012013-11-24 It's been awhile since I coded anything, guess I am getting rusty TripleDES kennet madsen 1.4k 5 24.8k Length of the data to decrypt is invalid. Anyhow I saw the file you sent me in link. http://jscience.net/is-invalid/avg-data-is-invalid.html Thanks a lot....

Encryption in the 19th century Why the pipe command "l | grep "1" " get the wrong result? Coprimes up to N 9-year-old received tablet as gift, but he does not have the self-control or maturity to own a tablet What's the English word for something that given attention Confused about D7 Chord notation on Alfred's Book [piano] How can I slow down rsync?

Second order SQL injection protection Query Which Profiles Have Read Access To Specific Object?

I'm sure that I'm missing something fundamental, but I can't see what it is. All rights reserved. Nov 17 '05 #3 P: n/a Jon Skeet [C# MVP] Dica wrote: thanks ollie, but now i've got a new problem. The fact that you're concatenating it to QuestionMark and ParameterName suggests that you are perhaps putting it in a URL?

Take yourself to another level. I knew it had to be something simple. –Welton v3.56 Apr 22 '11 at 18:57 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign But it gives error when I try to decrypt my string saying Length of the data to decrypt is invalid at line csDecrypt.Read(decrypted, 0, decrypted.Length); Can anyone help me My code check over here HTH Ollie Riches "Dica" wrote in message news:9b********************@rogers.com...

MemoryStream msEncrypt = new MemoryStream(); CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write); toEncrypt = textConverter.GetBytes(dataToEncrypt); I'm using the same key and IV when encrypting and decrypting. Join our community for more solutions or to ask questions. Why shouldn’t I use Unicode characters to simulate typographic styles (such as small caps or script)?

Browse other questions tagged vb.net encryption aes or ask your own question. If it doesn't work, we'll have something we can actually work on and fix. -- Jon Skeet - http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet If replying to the group, please do not mail Write easy VBA Code. Best Regards, Tuesday, October 17, 2006 11:54 PM Reply | Quote 0 Sign in to vote Thanks for the reply...

Please Mark Answer if this solves your problem. Shutting down the Pi safely without SSH or a monitor? If you don't have a copy of the encryption/decryption code then you have no other choice but to replace it with something else. 0 Message Author Comment by:codefinger ID: 396726462013-11-24 share|improve this answer edited Dec 21 '13 at 17:33 answered Dec 21 '13 at 12:55 Iridium 12.5k12646 Thanks, you are correct, about it being potentially insecure.

Is investing a good idea with a low amount of money? Symbolic manipulation of expression with undefined function In how many bits do I fit Encyclopedia of mathematics (?) Can a 50 Hz, 220 VAC transformer work on 40 Hz, 180VAC? It'll be great if you can upload you code somewhere and also that file so somebody can help you out. System.Security.Cryptography.CryptographicException occurred Message="Length of the data to decrypt is invalid." Source="mscorlib" StackTrace: at System.Security.Cryptography.RijndaelManagedTransform.TransformFinalBlock(Byte[] inputBuffer, Int32 inputOffset, Int32 inputCount) at System.Security.Cryptography.CryptoStream.Read(Byte[] buffer, Int32 offset, Int32 count) at VHC.Reporting.View.QueryString.QueryStringObsuficator.Decrypt(String inputText) in E:\Kiln_Repository\Reports\DevExpress_New\VHC_Reporting\VHC.Reporting.View\Classes\QueryString\QueryStringObsuficator.vb:line

Now I wish to decrypt it using the "public string Decrypt" method in the below code. The SQL is not important in the encryption/decryption. Basis that generates a topology for a connected topological space Encyclopedia of mathematics (?) Where does metadata go when you save a file? But, I don't know how to implement your suggestion - which part is the initialisation vector and how can I change the salt each time without transmitting it as well, or

Thanks again, Drew Tuesday, October 17, 2006 9:39 PM Reply | Quote 0 Sign in to vote Why dont you replace this: Dim symm As SymmetricCryptographer = New SymmetricCryptographer(GetType(DESCryptoServiceProvider), pk) with:

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