Generate MD5 And SHA1 Hash For File?
May 26, 2011I'm trying to generate an MD5 and SHA1 hash value for a given file with the following:
Imports System
Imports System.IO
Imports System.Security.Cryptography
Imports System.Text
[Code]...
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Different SHA1 Hash Values Obtained From PHP?
Sep 7, 2011I have some problems with the SHA1 hash value of a string. I'm trying to send a file from a client written in VB.net to a server written in PHP. My problem is that when I pass the same string to VB.net and PHP, the SHA1 value calculated by VB.net is completely different from the value calculated by PHP.
For example, I want to encode a string in Base64 and then calculate the SHA1 Hash of the Base64 string. When the computer executes this task from the vb.net version and from the PHP version I get two different SHA1 values, even if apparently the Base64 encoded string is the same:
VB.net: 2E97A53B09C482A831540B532845BCAC79BFACCF
PHP: 350A2080264E2724D4BCBC521C35264D264A1DAF
I'm surely missing something, could you point me in the right direction and tell me what I'm doing wrong here?
[Code]...
Generate MD5 And SHA1?
May 26, 2011I'm using the below function to generate an MD5SH1 hash for SQL backup files.This works well, has progress report etc but is slow if using large files.
Could I generate the MD5 at the same time as SH1 rather than having to process the file twice, doubling the time taken? What about converting an MD5 result to SHA1?
Imports System
Imports System.IO
Imports System.Security.Cryptography
Imports System.Text
[Code]...
Convert VB Generate Hash To PHP
Apr 10, 2012I have a function in VB.net that returns a password hash. I need to make a web interface to the same database and I'm not sure how to return the same hash in PHP. Does anyone know both languages enough to convert this to PHP?
Code:
Public Function GenerateHash(ByVal SourceText As String) As String
'Create an encoding object to ensure the encoding standard for the source text
Dim Ue As New UnicodeEncoding()
[Code].....
Encrypt File From Sha512 Hash?
Aug 23, 2011Would like to know how to encrypt a file (lets say a .txt or .xml) with SHA512 hash ? How to proceed ?
What i would want to do is.. check if the file exist.. open it and then read it while unencrypting it.
Creating An SHA1 Generator In VB?
Jun 21, 2010I've been trying to work on a personal project, in which the user enters in a text string in the first text box, and when the user clicks the "encrypt" button, the SHA1 hash of the text appears in the next text box. I've googled around for some information on this, and haven't found much for Windows Forms and SHA1, only MD5. I've checked a lot of things on MSDN but to no avail.
View 1 RepliesEncrypting Strings With SHA1?
Jul 18, 2009how to encrypting strings with SHA1, but all of the code I have found does not work or it is to complex for my program. I have found a website that has a encrypting demo program. It worked well so I email the programmer and he gave me this code.
[Code]...
Key - Decrypt A SHA1 String
Jan 26, 2011Is it possible to decrypt a SHA1 string in VB.Net, knowing the key? I have seen "decryption" of credentials before, however - in Java: [URL]
View 3 RepliesChange The Keysize And Maybe Even Choose Between MD5 And SHA1 Encryption
Feb 2, 2012Here is some code that I have that works perfectly:
[Code]...
Is it possible to change the keysize and maybe even choose between MD5 and SHA1 encryption with this code? If not, can someone point me in the right direction to find some that does?
How To Generate A Pdf File
Aug 24, 2009i would like to generate a very simple report with some images and text and i am wondering if there is a way to generate a pdf file with vb.net?
View 4 RepliesCss - Generate An HTML File
Feb 24, 2012I have created a program that merges files and I have decided to output the results as an HTML document so that it is legible. I have achieved this output using System.IO.StreamWriter and creating a textfile with all the html formatting and in-line CSS and saving it with the .html extension like so:
[Code]...
Generate A .txt File Containing Such String?
Mar 19, 2011how do I generate a .txt file containing such string?
View 1 RepliesHow To Generate Image File (JPG)
Nov 16, 2011I would like to generate a .jpg file by using vb.net desktop application. Example: the program will paint a simple rectangle with grey color, and produce as a physical image file (.jpg).
View 2 RepliesCan't Get Listbox Generate Info From Txt File?
Mar 23, 2011The problem is that it only adds to the text file it's suppose to read from, but instead of adding 4 strings into my listbox. Can someone figure out what's wrong with my code, and provide me the correct syntax for it. This is in a sub after click of a button in vb.2008.
[code]...
Combinations :: Generate All Possible Words On File?
Dec 10, 2011Example :
If a got word "don" then file will contain
ddd
ddo
[code].....
Generate A Static Url A File In Program?
Jan 7, 2010I would like to generate a static URL based on a few parameters.The page serve the file for downloading is called CertificateDownload.aspx ,I am generating the download link in Report.aspx.These 2 files reside on the same physical folder.I do not like the replace method ,but I could not think of another way of doing it.How can I improve my code or what is a better way of doing it.
I need the absolute url to be displayed as text in the web browser.[code]...
Generate Thumbnail Image From .doc File?
Oct 13, 2011I am in search of a way to access a files thumbnail preview and push it to a picturebox on my form. I have the code below that works for jpg files, however it does not work for say a word document's thubnail. displaying the word documents thumbnail in a picturebox would be great!
Dim myBitmap As New Bitmap("C:Doc1.doc", True)
Dim myThumbnail As Image = myBitmap.GetThumbnailImage(40, 40, myCallback, IntPtr.Zero)
PictureBox1.Image = myThumbnail
How To Generate File From Binary Information In SQL
Jan 18, 2010I am writing a windows desktop application in visual basic and I need it to connect to a SQL database, take a rows unique id, and using that number generate a file from the binary data that is stored in the SQL database and save it to a file directory. The part that is hanging me up is the creating the file from the binary SQL data.
View 2 RepliesHow To Generate XML File From Array Of Structs
Apr 30, 2012I need assistance generating a xml file by reading values from an array of structs.
my struct looks like this:
public structure myStruct
dim ID as int
dim myArray1 as boolean
dim myArray2 as boolean
dim myArray3 as boolean
dim x as int
dim y as int
I have several instances of these structs. I also have universal variables that are declared outside of the structs. I am looking to generate a xml file like this:
[Code]...
But how would I assign the values of each element by reading them in from the struct? Or do I need to use the XmlSerializer Class instead?
How To Generate/create A Exe File Project
Jan 29, 2009Do anyone know how to create a .exe file from my vb.net project? I do not want the one in the /bin folder. This is because i want it to be able to run my application from a single EXE file.
View 6 RepliesHow To Secure A File That Generate With A Service
Apr 12, 2010I am programming a service for a company that will log valuable performance data on machines that they lease out to other companies. It is critical for them that this information is as safe as possible and that it can only be read by us (a program created by us that is). I already made a trippledes encryptor that works fine but i still have the issue that a person can delete or move or corrupt the file if he somehow manages to get out of the operation software and gain acces to it.So my question is: Can i lockdown a file and make it as good as impossible to change the file or delete it other then by being the admin or the program that is generating them?
View 1 RepliesGenerate A Php File Depending On Selection On A Win Form
Feb 19, 2011I want to know if it is possible to generate a php file depending on selection on a win form in vb.net 2010. If so, does anyone has a link to a sample.
View 3 RepliesGenerate And Execute Batch File Over Network?
Jun 7, 2011am currently writing a program that uses multiple scripts we use to diagnose software we use in our environment. Currently, the only we retrieve our information is going to the local machine, and running the script locally, and retrieving the output results. The script is an batch file.The goal of the program I am currently creating is to automate the process by specifying which machines need to have the script ran on, generating the script, dispatching it, executing it, and retrieving the output results from the machine the program is ran on...
View 3 RepliesGenerate Receipt File And Send To Printer?
Feb 21, 2009generate receipt file and send to printer.
Here's i want to copy them as same sample receipt
My receipt has a Total Gas official receipt, customer number, station number, purchased, amount and charge
at the bottom of my receipt they have cashier and date..
Generate The Latitude And Longitude Values From The HDR File?
Mar 26, 2009I have a HDR file and DEM file,I want to generate the Latitude and Longitude values from the header file.Where that values are is used to list the elevation values from the DEM file.The file contains the data's like:
BYTEORDER M
LAYOUT BIL
NROWS 6000
NCOLS 4800
[code]....
Generate XML Directly Into A String Instead Of Creating A Xml File?
Aug 3, 2010How can I generate XML directly into a string instead of creating a xml file?
View 3 RepliesHow To Generate The Latitude And Longitude Values From The HDR File
Apr 19, 2012I have a HDR file and DEM file,I want to generate the Latitude and Longitude values from the header file.Where that values are is used to list the elevation values from the DEM file.The file contains the data's like:
View 8 RepliesVS 2005 Generate Checksums To See If File Changed?
Mar 12, 2010When my app closes, perform a checksum, digital signature, whatever on a data file, and save that in a text file.
When my app opens again, perform that same process on the file, and see if the new checksum matches the saved one, in order to determine if the file has been changed outside the application.
Can Itext Generate Pdf File And Insert Into Database As Blob
Jan 12, 2011I just wondering can Itext done the following function before i dive into it.I want to develop a window application, and schedule this application in my server. This application should query the data from (oracle) and with itext help (i hope it help), generate pdf report. Then insert back to oracle as blob.
View 2 RepliesWrite A Program In .net Take Some Input From User And Then Generate Hex File?
Oct 24, 2010My project is GUI based. I want to write program in vb.net take some input from user and then i hav to genarate hex file so that it can be run on microcontroller. I just want to know weather hex file generation in vb.net is possible or not?
View 2 Replies