the code im making takes Cipher text and finds the possible number of rectangles (or factors) and finds the sum of the vowel differences of each of the possible rectangles.Since the english language has roughly 40% vowels in each row (0.4 * number of columns) - number of vowels would find the number of vowels for each row and then add up the vowel differences for each row to get the sum and that would be for each possible rectangle The output for each combinations for this given text should be:
This is for a simple encryption / decryption program. However when I run this the program does nothing and doesnt respond. Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim decryptedtext As String Dim encryptedtext As String Dim k As Int16
I've got a site using .netCART. It's running fine in production with Windows Server 2003 and .NET 2.0. On the new server (Windows Server 2008) everything is working except for credit card decryption in the store admin. No errors are being sent, no exceptions thrown, just the encrypted string being output to the screen instead of a decrypted credit card number.
Dim strCCEncrypt As String strCCEncrypt = Trim(DataRow.Item("CreditCard")) strCCEncrypt = tools.Decrypt(strCCEncrypt) 'tools is a .netCART utility
I am trying to figure out how to count the words that start with a vowel and also count the words that start with a consonant. I have tried several different ways on trying to do this but no luck. I have worked on this for a couple days already. Very frustrated I need some assistance with this issue
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Btn5vowel.Click Dim rand As New Random Dim alphabet As String Dim i As Integer For i = 1 To 200 alphabet = ChrW(rand.Next("A"),to ("z")
It is giving me that the expression must be expected. I have to choose and display the fifth vowel from the list of 200 random words.
I need to find the first letter in a message and replace it with the 5th vowel in another string. However it never gets into the condition in Red Color. I also need to keep the count of the characters in the characterarray. ???
I am new to regular expressions and I am trying to implement the metaphone algorithm in vb.net. [URL] The algorithm has lots of steps to replace characters depending on certain conditions. (ex. replace w unless followed by a vowel). Is there a way to handle branching logic using regular expressions?
modifying these functions to encrypt/decrypt byte arrays rather than strings. Also, to have the functions return the encrypted/decrypted byte array, rather than a string.
If the input is alphabets such as any string, it works ok but once the input is in numeric such as "177307" the error attached will be prompted out during the decryption process. I've checked that the decryption value for 177307 is "dw==". I suspected that this function does not support numerical values. Is there anyway to fix this problem? Below are the codes and attached is the error
Imports System Imports System.Security.Cryptography Imports System.IO
My purpose is to encrypt the database so that it cannot be open independently without using the application. my application should still be able to access it read/write.
i will like to know if it will be possible to decrypt and encrypted file in vb.net or any without knowing the form of encryption..any information on how to go by it... in that if you lose the form on encryption can it be decrypted?
I am actually really new to VB and C#. From numerous tutorials that i found online i was able to create a small program that will encrypt a file. However I am having a really hard time decrying it back.[code]All I am trying to do is to create a program that will decrypte these file with an upload button. Our system encrypts the files to prevent operators from changing the results, we need to trend the data. However it will take way to long to use the online tool provided with the software. A desktop tool will save us much more time. The files generated are 70mb and up.
At the moment I have a Form containing two text boxes and two buttons. I want the one textbox to be used to type a message (to be encrypted) and the second textbox will be for a key to decrypt the message. Button one will be for encryption and button 2 for decryption.
From desktop application I want to upload an image. Then want to pass that image to webservice which encrypt it and pass it to another webservice which will save the encrypted image in the Access database. And then using ASP.net want to decrypt the image.
I have a Problem to Decrypt my crypted files :e.g. if I encrypt this text:
B�AR B�LASDJASPDJAPSDJPASDJPASD asdj ...
And Decrypt it:
AB0_�-M3‚S�r�WPJAPSDJPASDJPASD asdj ...
The first chars are wrong! My Code to Encrypt and Decrypt :
Encrypt:
Public Shared Sub EncryptFile(ByVal sSource As String, ByVal sTarget As String, Optional ByVal BufferSize As Long = 4096) Dim ErrorHappened As Boolean = False Dim OldFileStream As FileStream Dim NewFileStream As FileStream
Ok so I've made an encrypting/decrypting program and I've found a small bug with it. It will encrypt plain text files fine, except for the last character ( does anyone know how to fix this by the way? ) But when it comes to enrypting PNG Images.. well here's is the before and after files:
I need to encrypt a string using javascript and decrypt it using vb.net, is there a compatible encryption/decryption method between javascript and vb.net to be used?
[Code] I need to do a video encryption/decryption on p2p chat. The concept for my understanding is to capture the video, encode it then encrypt, on the receiver side is to decode and decrypt it.
i am looking to decrypt my HEX code file for an ATTiny chip and programming it using the AVRDude command line interface. Problem being, i do not want the user to be able to see what the HEX file is at any given time.Can the VB.net Cryptography crypt the HEX file before i put it onto the server and then decrypt it after the program downloads it from the server and runs it through the program without seeing the decrypted HEX file?Obviously the HEX file can not stay encrypted while being programmed to the ATTiny chip so how can i go about it so that i can create the original HEX file to be programmed within the program without having to worry about it writing a temporary file to the hard drive and then deleting it afterwards? (Because they could close the program after it does that temp file and they would be able to navigate and open it and see the code)
i am looking to decrypt my HEX code file for an ATTiny chip and programming it using the AVRDude command line interface. Problem being, i do not want the user to be able to see what the HEX file is at any given time.
Can the VB.net Cryptography crypt the HEX file before i put it onto the server and then decrypt it after the program downloads it from the server and runs it through the program without seeing the decrypted HEX file?
Obviously the HEX file can not stay encrypted while being programmed to the ATTiny chip so how can i go about it so that i can create the original HEX file to be programmed within the program without having to worry about it writing a temporary file to the hard drive and then deleting it afterwards? (Because they could close the program after it does that temp file and they would be able to navigate and open it and see the code)
i am looking to decrypt my HEX code file for an ATTiny chip and programming it using the AVRDude command line interface. Problem being, i do not want the user to be able to see what the HEX file is at any given time.
Can the VB.net Cryptography crypt the HEX file before i put it onto the server and then decrypt it after the program downloads it from the server and runs it through the program without seeing the decrypted HEX file?
Obviously the HEX file can not stay encrypted while being programmed to the ATTiny chip so how can i go about it so that i can create the original HEX file to be programmed within the program without having to worry about it writing a temporary file to the hard drive and then deleting it afterwards? (Because they could close the program after it does that temp file and they would be able to navigate and open it and see the code)
I can encrypt/decrypt fine with a certificate that is in a PFX file because the Private Key is contained in the X509Certificate2, but if I import the certificate to my personal store and mark the private key as non-exportable I have almost no clue what to do to get the decryption done. I have narrow traces to CryptoAPI but I haven't been able to find any articles or code sample neither in VC++ nor C# (to be translated to VB.NET)..
I need to encrypt an XML file, send it to another location and decrypt it there. As you can see from the codes below, I am using the same key but it won't work (for now im simply using two local files).
The error I get is as follows:
Padding is invalid and cannot be removed.on this line in Decrypt.aspx: Dim xReader As XmlTextReader I am thinking it might be at the actual encryption stage causing errors e.g., file not saving correctly.
Encrypt.aspx Dim rijnAlg As RijndaelManaged rijnAlg = RijndaelManaged.Create()
I have been writing a security class in my application, I am able to encrypt the string correctly and without error. However every time when I try to decrypt this string again, i get an error with this as it returns the following Padding is invalid and cannot be removed.
Here is the code:
Public Function DecryptKey(ByVal plainText As SecureString, ByVal key() As Byte, ByVal iv() As Byte) As SecureString
I have found simular issues on web, and most of them say that the IV is not the same the encrypted version, but I can confirm that the IV is the same as they both access the exact same variable.
I'm trying to find a simple and easy encryption/decryption method for strings. The strings will contain spaces, special characters, numbers, and letters. I just need to be able to encrypt/decrypt them.
I was board making web browsers and OS so, I tried making an Encryption/Decryption program. I surfed the net and found a source code. But, after doing everything, I debug it, click the encrypt btn and nothing happens. I though the encrypting is a slow process. The thing is the process should be immediate cause I downloaded this web browser called 'Areo Pack'. It comes with a few other program and one of them in an Encryption/Decryption program. I tried it and it was done in a few seconds. I tried opening the encrypted file with notepad and I see a text file with Chinese, Japaneses, Korean, etc.
Imports System.Security.Cryptography Imports System.Text Public Class Form1 Private Shared DES As New TripleDESCryptoServiceProvider Private Shared MD5 As New MD5CryptoServiceProvider [Code] .....