.net - C# Triple DES Encryption To Decrypt Informix ENCRYPT_TDES Function?

Jan 6, 2012

I have data from an Informix database that has a column with data encrypted using the Informix function ENCRYPT_TDES. The data was imported into SQL SERVER 2008 and I no longer have access to a running instance of Informix. I need to write a C# or VB.NET function for decrypting that data. Anyone know how to write a C# function to decrypt it?

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.Net DES Encryption Function, To Triple DES?

Mar 14, 2012

Public Shared Function DESEncrypt(ByVal Data As String, ByVal Key As String) As Byte() Dim IV() As Byte = {&H12, &H34, &H56, &H78, &H90, &HAB, &HCD, &HEF}

[Code]...

this is what I currently have for my DES encryption, but as I am fairly new to VB.Net I can figure out how to make it use Triple DES rather than DES

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Encryption - Encrypt In .NET With AES-256 And Decrypt In Air?

Jul 28, 2011

I am trying to encrypt a zip in VB.NET to send to an android device using Air. Then once its on the device, decrypt it using the key and IV.

Here is part of my VB.NET Code:

Private Sub EncryptBytes(ByVal fileIn As String, ByVal fileOut As String, ByVal pass As String, ByVal ivString As String)
Dim crypt As New RijndaelManaged
crypt.KeySize = 256

[Code]...

This is not working ... Note that I tried to write a PKCS7 class based on a Java class I found. The hurlant package I downloaded only had PKCS5. VB.NET did not provide any of the same padding classes as hurlant comes with. I wish I could using "None" but I couldn't get passed the error in VB.I think there may also be an issue with the way I am converting a string into a byte array in VB vs Air.

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Encrypt And Decrypt Files Using TripleDes Encryption?

Dec 26, 2011

I'm designing a program to encrypt and decrypt files using TripleDes Encryption algorithms but am having issues decrypting an image file. The file encrypts in the correct manner, but when I go to decrypt the file and open as an image I get an error message. One example is when trying to open the file in paint a message appears stating 'c:New FolderDecrypted.jpg Paint cannot read this file. This is not a valid bitmap file, or its format is not currently supported. My coding for the form is shown below:

"Imports System.Windows.Forms
Imports System.Security.Cryptography
Imports System.Security

[Code]....

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Encryption/Decryption - Code To Encrypt A File->networkstream->Decrypt The File

Feb 28, 2011

I'm having trouble writing the code to encrypt a file->networkstream->Decrypt the file.. I've tried several ways, but I keep failing....

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Algorithm String - Function Encrypt And Function Decrypt ?

Jun 13, 2011

I have 1 string : abc @#ABC.xyz123ZYX

Now I need to encode the string:

The encoding alphabetic characters,

CODE:

With this string, after encoding, the result is: zyx @#ZYX.cba123ABC

About Function Encrypt and Function Decrypt?

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Function To Encrypt And Decrypt A Script

Mar 25, 2012

I have two functions that are supposed to encrypt and decrypt a string but the encrypt function returns a different encrypted string for the same text everytime. What have I done wrong?

[Code]...

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VS 2005 With Encryption Function?

Oct 27, 2009

I am using the following

Public Function EncryptString128Bit(ByVal vstrTextToBeEncrypted As String, _ByVal vstrEncryptionKey As String) As String
Dim bytValue() As Byte = Encoding.ASCII.GetBytes(vstrTextToBeEncrypted.ToCharArray)

[code].....

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VS 2008 : Make An Encryption Similar To PHP's Crypt() Function?

Feb 8, 2010

If I'm not mistaken PHP crypt() function use DES-based encryption algorithm. So I've search DES Encryption code and all that I found is code that similar to the one in this post http://www.vbforums.com/showthread.php?t=471798

But with those codes I must enter 8 character lenght salt. Less then that the code wouldn't succeed. In the other hand. The PHP crypt() function only could use 2 character length salt. If you enter more than that, it seems it only use the first 2 character..[URL]

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Cannot Connect To Informix From Application?

Jul 13, 2010

I've installed the trial version of IBM Informix Dynamic Server 11.50 on my development laptop, for use with an ASP.NET 2.0 app I'm writing. I have created a couple databases and filled them with sample data but I cannot connect. This is the relevant section of code:

Dim facStr As String = System.Configuration.ConfigurationManager.ConnectionStrings("fact").ConnectionString
conn.ConnectionString = facStr

[code].....

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Get An IfxBlob From Am Informix Query?

Apr 22, 2009

I can't seem to find a way to get just the locator object of a column under .Net. It seems that Informix is automatically converting the blob column to Byte[] and not leaving a way to change that behavior.

IBM.Data.Informix.IfxConnection c =
new IBM.Data.Informix.IfxConnection("...");
c.Open();

[code]....

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C# - Triple Dot Syntax For Linq To Xml

May 4, 2011

I ran into this answer which had a triple dot syntax in VB.NET that I have never seen before. The query looks like this

[Code]...

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ODBC Support For Informix Serial And BigInt Data Types

Jan 20, 2010

I have Informix Dynamic Server 11.50 and Informix Client SDK 3.5 installed on my server. I am developing a .NET application to read data from Informix database using ODBC functions. In the database, i have a table with columns of Serial and BigInt data types defined. My data retrieve function looks like this [Code]

I've tried to modify the columns with Serial and BigInt data types to Integer. And, everything works fine without modifying a single line of code. I do need some advice how to overcome this problem as i need the Serial data type column as an incrementing id column. For BigInt data type column, may be we can change it to column with Integer data type instead.

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VS 2008 Mouse Triple Click To Select All Text?

Sep 15, 2009

As I'm sure many of you know, when you double click in a textbox, it selects part of the text, how could I make it where when you triple click on a textbox it selects all the text like a web browser address bar?

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.net Encryption Result Does Not Match The Xcode Encryption Result Given The Same Input Parameters?

Jun 21, 2011

I have set up a method in vb.net and in xcode for encrypting a string using as far as i can tell the same parameters for an AES encryption.I've looked all over the place but cannot find information on whether they use the same encryption algorithm and settings.

this is the vb.net code:

Dim encryptAES As New AesCryptoServiceProvider()
Dim encoding As New UTF8Encoding()
Dim encryptor As ICryptoTransform
encryptAES.Key = encoding.GetBytes("12345678901234567890123456789032")
encryptAES.IV = encoding.GetBytes("1234567890123416")
encryptAES.Mode = CipherMode.CBC

[Code]...

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VS 2010 Single Click For Triple Click

Sep 9, 2011

VS 2010 Single click for Triple click

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Encrypt In ASP: Decrypt In ASP.NET

Apr 1, 2009

I have a classic ASP page which constructed a querystring for a link to an ASP.NET page. Certain elements in the querystring are somewhat sensitive so I want to encrypt them. I've come across some techniques for doing this in ASP.NET and also in classic ASP but I'm not sure how to do it from classic ASP to ASP.NET. I'm using .NET 3.5.

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Encrypt Way How To Get The Decrypt

Jul 6, 2011

i got encrypt way so how can i decrypt it and the encrypt way is :

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AES Encrypt Decrypt String?

Jan 2, 2010

i need a standard way of encrypting a string and decrypting it using AES. I am aware of the Cryptography class, however almost every example creates a class to do the encryption,If .Net already has this implemented and ready to use why would we create classes for encryption and decryption, isn't it as simple as calling the encrypt method of the class or decrpyt and passing in the text. Unless everyone is wanting to centralize the code. But even then i see so many different examples from File,Data Protection etc..

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Cannot Convert Decrypt String

Jun 13, 2010

There is a problem with the source code. I cannot convert the string to decrypt from encrypt string.[code]I went on breakpoint on that line and I have looked on quickwatch. The error I have caught is that convert is a type and cannot be used as an expression.

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Cannot Decrypt PDF Files Properly

Dec 26, 2011

I'm joining several files and would like to encrypt them with AES. As a test I'm joining the exact same file twice, but I'm never able to properly decrypt the second file.

Steps to reproduce:
Make sure you have a file "C:Original.pdf" or change the filepath.

1) Click Button1 to encrypt the file. This will create an encrypted file named "Encrypted.bin"

2) Click Button2 to decrypt the file. This will create a decrypted file named "Decrypted.pdf"
Both "Original.pdf" and "Decrypted.pdf" are 100% the same.

3) Uncomment the code between the hash character lines.

4) Repeat the first two steps.
"Original.pdf" and "Decrypted.pdf" are now not the same.

vb.net
Private enc As New Encrypt
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
'Encrypt
enc.EncryptDecrypt("C:Original.pdf", "C:Encrypted.bin", True)
[Code] .....

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Decrypt A File That Was Encrypted With Des?

Nov 10, 2011

i am trying to decrypt a file that was encrypted with Des. However not all of the file is encrypted just a few lines are. Here is an example of the file im trying to decrypt:

Random text
Encrypted Text
MD5 Hash
Encryption Key(Only there for tests)
Number of encrypted lines

The idea is to read the last three lines into variables and use them to decrypt the text. At the moment i use the number of lines - (the number of encrypted lines + 3) to find where the encrypted text starts. Then i was trying to copy the encrypted text to a temp file so i could run the code bellow on it, however i am getting an encoding error apparently i need to be using base64 or something. So my question is can anybody explain to me or show me how i can pull the encrypted text out of the file so that i can use the code bellow on it.

Dim DES As New DESCryptoServiceProvider()
'A 64-bit key and an IV are required for this provider.
'Set the secret key for the DES algorithm.

[Code].....

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Decrypt A Files That Is Coming As Pgp?

Jan 29, 2009

I would like to decrypt a files that sis coming to me as pgp, is there anyway of doing this. without the pgp command or any other third party dll. or I rememeber A long time ago there was a .dll called NSDpgp3.dll but it only works with vb6 ( sdpgp3 was free)

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Decrypt Sql Data In Mysql 5.0?

May 10, 2012

THIS IS THE SAMPLE OF ENCRYPTED DATA PLEASE HELP ME HOW TO DECRYPT THIS KIND OF ENCRYPTION

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Encrypt / Decrypt Xml File

Jun 22, 2011

I need some help on saving/reading xml from/to dataset. I would like to make that complete file is encrypted and not only some elements inside or part of file.Currently this is not working in any way at all.[code]

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Encrypt And Decrypt A File By Using VB?

Dec 23, 2011

I ended up getting this properly working, as far as encrypting a file goes:How to encrypt and decrypt a file by using Visual Basic .NET or Visual Basic 2005 However, the catch is I have to change the name of the output file. What I was hoping to do is overwrite the original with the encrypted file, but when I tried that on a large file, it ended up only getting about 8 bytes of it.

Does anybody have any suggestions or recommendations? The overall idea is that I want to keep a file encrypted until it needs to be unencrypted for use by a program, but I'm not sure if there are better tools out there or if there's a better way of accomplishing this.

Question 2: I would really, really like to encrypt an entire folder, which I'm guessing would be faster than file by file, but when I try I keep getting access denied errors, even with DOS Cipher. Is there a way to do this with a key?

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Encrypt And Decrypt App Config?

Jul 18, 2010

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

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Encrypt And Decrypt Database

Aug 15, 2011

How to encrypt and decrypt database..

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Encrypt And Decrypt Database?

Aug 21, 2011

How to encrypt and decrypt database

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Encrypt Or Decrypt Text?

Jan 10, 2009

I am using vb.net 2008 i want to Know how can i encrypt text in a text box save it to a file then read the file decrypt the text and finaly display it in text box .

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