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Rijndael Padding Is Invalid


The second and third argument to the MemoryStream constructor were missing in my original code, and adding them solved my problem. 0 LVL 44 Overall: Level 44 C# 24 .NET I was using ToBase64String and doing string replace on the characters "/", "=", & the other one which escapes me at the moment, the long number format seemed simpler –Nick Allen His client is a working client. Our Agony Aunt Advises by Simple Talk Editorial Team 8 Related articles Also in Blogs How to allow nulls in unique fields An interesting workaround using unique fields Unique have a peek here

asked 2 years ago viewed 12268 times active 2 years ago Visit Chat Linked 0 Padding is invalid and cannot be removed with Rijndael 1 AES Padding cant be removed Related Proposed as answer by Figo Fei Monday, August 02, 2010 2:23 AM Thursday, July 29, 2010 6:32 AM Reply | Quote 0 Sign in to vote Changing FlushFinalBlock() to Flush() doesn't What are some of the serious consequences that one can suffer if he omits part of his academic record on his application for admission? if the function is called by the .EXE, it works, if it is called by my C# form, it doesn't work.

Padding Is Invalid And Cannot Be Removed. Cryptographicexception

Your decryption has led to a string where the last n bytes are not equal to the value n of the last byte (hope that sentence makes sense). My padding's invalid! 28 February 2012Oh no! Zaynebou 1 post since Dec 2016 Newbie Member More Recommended Articles About Us Contact Us Donate Advertising Vendor Program Terms of Service Newsletter Archive Community Forums Recent Articles © 2002 - The good news is that I can build in exception handling to identify an incorrect password. 0 LVL 33 Overall: Level 33 .NET Programming 11 C# 9 Encryption 2 Message

Well, after playing around a bit, I discovered the problem was fixed by changing the encryption step to this: 1234567891011 // encrypt the data using a CryptoStreamusing (var encryptor = rij.CreateEncryptor())using Clearly we're not going to be able to test your decryption function without at least an encrypted text on which to work! Set your breakpoints. - F5 to run. Padding Is Invalid And Cannot Be Removed Meaning About the PHP Client code, and the version of operating system, in order to totally exclude problems regarding them, i've done another thing.

Forum New Posts FAQ Calendar Forum Actions Mark Forums Read Quick Links Today's Posts View Site Leaders What's New? You'll have to edit before I can cancel the vote. –Henk Holterman May 1 '14 at 11:29 | show 2 more comments Your Answer draft saved draft discarded Sign up When the key is less than 17 characters, you get the exception you reported. Since you did not get an exception during encryption, the implementation you used "somehow" filled the remaining 12 bytes.I would suggest that you do that yourself - add some 12 bytes

How can I easily double any size number in my head? Decrypt Padding Is Invalid And Cannot Be Removed The solution … Read more © 2005 - 2016 Red Gate Software Ltd FAQ Sitemap Privacy Policy Write For Us Contact Us What do you think of the new Simple Browse other questions tagged c# .net encryption or ask your own question. Skydiver, on 04 July 2012 - 05:32 AM, said:- IV which is your MAC address converted to string with '-' as separators.

Padding Is Invalid And Cannot Be Removed Cryptostream Read

It'll be a while before I can do that test, I'll post an update in a few hours time. 0 How to run any project with ease Promoted by Quip, Inc iPhone SE powers on whenever moved, defective? Padding Is Invalid And Cannot Be Removed. Cryptographicexception To … want to add a value in array 6 replies hello guys, super noob here! Rijndaelmanaged Default Padding It really does look like this is a 'feature' of the .net classes, at least as I am using them.

To test this, I created a simple project that decrypts and encrypts a byte array: 12345678910111213141516171819202122232425262728 // create some random databyte[] data = new byte[100];new Random().NextBytes(data);// use the Rijndael symmetric algorithmRijndaelManaged navigate here Glad to hear that. Get 1:1 Help Now Advertise Here Enjoyed your answer? using (MemoryStream memoryStream = new MemoryStream()) { using (CryptoStream cs = new CryptoStream(memoryStream, EncryptorTransform, CryptoStreamMode.Write)) { cs.Write(bytes, 0, bytes.Length); } encrypted = memoryStream.ToArray(); } return encrypted; } /// The other side: Padding Is Invalid And Cannot Be Removed Transformfinalblock

Later, it will be decrypted by a different Rijndael object. id want to build a function which is adding number in array, and if number is out of expect, its … Printing parts of web page - None before or after NOTE: Normally we'd create a Byte Array from a string using an ASCII encoding (like so). // System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding(); // return encoding.GetBytes(str); // However, this results in character Check This Out When the key is less than 17 characters, you get the exception you reported. - IV which is your MAC address converted to string with '-' as separators.

private const int keysize = 256; public static string Encrypt(string plainText, string passPhrase) { byte[] plainTextBytes = Encoding.UTF8.GetBytes(plainText); using (PasswordDeriveBytes password = new PasswordDeriveBytes(passPhrase, null)) { byte[] keyBytes = password.GetBytes(keysize / Length Of The Data To Encrypt Is Invalid. Great for personal to-do lists, project milestones, team priorities and launch plans. - Combine task lists, docs, spreadsheets, and chat in one - View and edit from mobile/offline - Cut down Simple tutorial: Exploring interfaces.

This means the input needs to be a multiple of 16 bytes long.

The 'is' And 'as' Keywords - Casting Using These Keywords TutorialWhich Is Better And Why? - What Is The Differnce Between Wfa And Wfp General Discussion Caffeine Lounge Corner public string Decrypt(byte[] EncryptedValue) { Byte[] decryptedBytes = null; using (MemoryStream encryptedStream = new MemoryStream()) { using (CryptoStream decryptStream = new CryptoStream(encryptedStream, DecryptorTransform, CryptoStreamMode.Write)) { decryptStream.Write(EncryptedValue, 0, EncryptedValue.Length); } decryptedBytes = The end bytes don't match the padding scheme it's been told to use, therefore it throws an exception stating what is wrong - what the decryptor expects to be padding actually Flushfinalblock Already done.

which normally is plain text XML ... can-mohan 149 posts since Feb 2013 Community Member parrallel array test scores and names Last Post 9 Hours Ago hi, so i am currenty working on a program that needs to so it is a bug and your code was good. this contact form I have done that ( RMCrypto.Padding = PaddingMode.PKCS7; Select all Open in new window ) Still same error with an incorrect password.

Thanks! 0 LizR 171 8 Years Ago Id have thought you would have to have followed the reverse route of the encryption more when decrypting, it doesnt seem to be in Thank you. :-) Was This Post Helpful? 0 Back to top MultiQuote Quote + Reply ← Previous Topic C# Next Topic → (2 Pages) ← 1 2 Related C# TopicsbetaEncryption public byte[] StrToByteArray(string str) { if (str.Length == 0) throw new Exception("Invalid string value in StrToByteArray"); byte val; byte[] byteArr = new byte[str.Length / 3]; int i = 0; int j Perhaps you should do the same when you decrypt it.

A counter example for Sard's theorem in the case C^1 Why does Harry address the Weasley-parents with "Mr. & Mrs"? Understand and compare the most popular email encryption services for Google A… Email Software Encryption Internet / Email Software Google Apps How OnPage integrates into ConnectWise Video by: Adam C. Results 1 to 12 of 12 Thread: [RESOLVED] Padding is invalid and cannot be removed Tweet Thread Tools Show Printable Version Subscribe to this Thread… Display Linear Mode Switch to Hybrid When decrypting it asks for a password.

var myURL = ""; var myQS = myURL.SubString(myURL.IndexOf("?") + 1); var myKVPs = myQS.Split("&"); foreach (var kvp in myKVPs) { // It is important you specify a maximum number of 2 The program encrypts fine taking as input 1)the data (reading it from textbox) and 2)the password, and stores the encrypted data to a text file. Correct. kenshinbatto92 1 post since May 2016 Newbie Member problem with creating a matrix in pascal Last Post 10 Hours Ago hello guys, i'm facing a difficulty in creating a matrix in

then it is regarded as part of the QueryString. I'll just end up rejecting anyways.* * How to get EFFECTIVE help: The Hitchhiker's Guide to Getting Help at VBF - Removing eels from your hovercraft * * How to Use