Encrypt And Decrypt Text File?


I save data from datagridview to text file . I also load the same data from text file into datagridview for edit and update the same thing to text file. Now i want to make my Drill layer header.txt in encrypted format to prevent anyone to open that file and modify out of program. They only can modify it through the program How can we do like this? My Drill Layer Header.txt file is like this T240C3.175F012S27H2000 T239C0.95F034S55H1000 T236C1.2F029S48H2000 [code].... This code can encryp the text file. But accrding to this code EncryptFile("c:\Drill Layer Header.txt", _ "c:\Drill Layer Header original1.txt", _ sSecretKey) It ask for input and output file. So it take data from Drill Layer Header then encrypt the save in drill layer header original.txt. I want it to take data from drill layer header and encrypt and save in same file.

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How would i encrypt certain lines in a text file? And afterwards, decrypt the file for reading?As in, for example:File.txtCode:Blargh,5blargfgd,12fadskfd,7Encrypted:#$98ƒ≡3▲╖98ƒ≡3$98ƒ23497432Something like that. Like a letter subsitution function?And how would i decrypt something like that?Thanks! (code is appreciated GREATLY)

Encrypt/Decrypt Between VB2008 And Android? stackoverflow.com

I use these code to encrypt any plain text in vb2008.I want decrypt and use generated file in my app in android.I know that put files in assets folder and i use it.this code use Cryptography to encryption.how i can decrypt generated files in my android app.and how i use them in my android app. Imports System.Security.Cryptography Public NotInheritable Class Simple3Des Private TripleDes As New TripleDESCryptoServiceProvider [code].....

Length Of Data To Decrypt Is Invalid social.msdn.microsoft.com

I am trying to build an Encryption/Decryption class/extension. I am able to encrypt the data no problem, but when I try to decrypt the data I am getting "Length of the data to decrypt is invalid." Here is the entire class file. Imports System.IO Imports System.Text Imports System.Text.Encoding Imports System.Security.Cryptography Imports System.Runtime.CompilerServices Imports System.ComponentModel [Code] .....

MySQL Cipher Text Matching? www.sitepoint.com

I want to encrypt data in mysql database, that can be done in PHP and then stored to database OR that can be encrypted and stored (both) in MySQL.The problem is that, I want to display the records (when the client is login) in A-Z Order, now, i tried to use order by clause, but that is not working, as the column is encrypted. Therefore, I need a guidance, tutorial, etc, where some PHP Encrypt / Decrypt function returns same results as MySQL Encrypt / Decrypt function, so that i can sort the table on encrypted column.

Encrypt/DeCrypt File www.vbforums.com

hi i want to encrypt an image through vb Codecan any body tell me how to encrypt / decrypt an image (tiff file) thru Visual Basic.i have done it using Encrypt/decrypt function. it has several problemsI came to know that Microsoft CAPI is the better solution for it. I am not able to get the related API. Kindly guide me thx in advanceSakshi

Encrypt / Decrypt A Non-text File social.msdn.microsoft.com

I am interested in knowing if non-text files like .xls/.xlsx or .doc files can be encrypted... From the Devlopers Guide on MSDN, I found code snippets that allow encryption / decryption of .txt files. This works absolutely fine. However, I would like to know if similar procedure can be used to encrypt/decrypt file other than .txt file.

Read The Contents Of A Text File And Add It To A Text Box? social.msdn.microsoft.com

I am writing a simple program that will encrypt the text that is held in a text box and save it to a text file but I want it to be able to open a text file and decrypt the contents. Ok now all the threads I have read are about reading a text file that is in a preset location. What I want to do is open a text file that the user selects and have the contents displayed in a text box.

Encrypt And Decrypt App Config? www.vbforums.com

there is anyone know how to encrypt and decrypt app config in vb.net??i want encrypt connection string and appsettings .

Encrypt And Decrypt A URL String? stackoverflow.com

how to encrypt and decrypt a URL string? I want to encrypt a hyperlink ...

Decrypt Code Form Encrypt Code www.vbcity.com

HiI have below code in one of the old program which encrypts the text. I need to decrypt the text which is encrypted using the below code. Is it possible?Code:Function Encrypt(sText As String) As Double    Dim nText As Double, i As Integer    nText = 0    For i = 1 To Len(sText)        nText = nText + Asc(Mid(sText, i, 1)) * 2 ^ i    Next    Encrypt = (nText * 2) + 18End Function Edited by - NeedHelp on 10/23/2005 8:58:18 AM

XML Encryption/Decryption In Separate Files? stackoverflow.com

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() [code]......

Encrypted File phpbuilder.com

what i need to do is create a text file on my webserver above root. once it is created i need to encrypt it with RSA or some other type of strong encryption. Once the file is encrypted i need php to pass the decryption key to the file and decrypt it and then open it up and read the contents of the file. Does anyone have any idea how to do this? i have searched high and low.

Unpredictable Encrypt And Decrypt www.phpfreaks.com

I am wondering if anyone has experienced an error encrypting and decrypting in and out of mysql. Sometimes when I decrypt then send an email to with the decrypted string it will still be encrypted. The strange thing is, this is unconsistant. Usually it will be fine, but other times it will keep something encrypted. All the values I am entering are numeric. I am however not currently checking for that.

Encryption Libraries ? www.xtremevbtalk.com

Hi,I want to use any Visual Basic Encryption Library with myprogram to Encrypt/Decrypt files.I have heard that DLL files for various Encryption Algorithmslike BLOWFISH, RIJNDAEL, DES, CAST etc..are available FREE for personal use.Suppose I use any DLL file with my program to Encrypt/Decryptfile(s), then is it possible for any hacker that he can stealthe DLL file and my file which contains Encrypted data, and Decompile the DLL file to decode the Encrypted file data?Please suggest some good places from where I can get thelibraries (VB version) and help about how to call them fromwithin my program.Thanks.

Text File Encryption www.vbforums.com

Hi to all,I am like 99% of those people on here in the way i would like to code the following....I have a series of textboxes on a form i would like to save the contents of these to a textfile but encrypt them prior save. Then, when reloading them decrypt the textfile and show the info back into their respective textboxes.Does anyone out there have a snippet of code to encrypt and decrypt text to a textfile?I would really appreciate this as i have a project to finnish for my Finance Director.

File Encryption www.xtremevbtalk.com

HI allI have a problem. I've got a file that keeps the score for a game called Columns.The problem is that i want to decrypt the file and then encrypt it again so that the game can read the scores again without losing any of the scores.The file is encrypted but the text is still normal.Can any body send me in the right direction or know of any tutorials about encryption.ThanxNewby1

Converting String To Bytes And Viceversa? www.dreamincode.net

Ive 2 buttons and 3 text boxes.Button 1 encrypts the data from textbox1 to bytes, converts it to string and display it in textbox2.Button 2 reads string from textbox2, converts it to bytes and decrypts it displaying it in textbox3 (textbox1 and 3 got to match).The encrypt/decrypt process works fine but the conversion from string to bytes is failing and cannot seem to find the problem. The error states that the string doesnt have the same format (Bytes(i) = Byte.Parse(Values(i)) [Code]...

Encrypt And Decrypt Database www.daniweb.com

How to encrypt and decrypt database..

Encrypt And Decrypt Database? www.vbforums.com

How to encrypt and decrypt database

How To Encrypt And Decrypt Strings www.vbforums.com

how to encrypt and decrypt strings.