I'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 Repliescreating a password generator in VB using VS 2008.What I want to do is have a front end which has a text box (to enter password length), a button (to generate a password) and a label (to display the password).I have been successful in creating random numbers; however a password containing just numbers isn't sufficient. So I would like random characters including uppercase and lowercase letters.
View 4 RepliesI've read numerous posts and threads about random number generation, but I havent' run across this.If I generate a bunch of random numbers, the results are radically different if I create a new Random generator for each number than if I use on Random generator for all the numbers. The results are much more consistent and evenly distributed if I use the same Random generator.I would have thought the opposite,because creating a new Random generator each time should reduce the number of random repetitions, if a different time slice is used to create the random number.[code]......
View 9 RepliesI'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]...
how 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.
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Is 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 RepliesI 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?
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I'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]...
Here 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 create password generator in vb8 small alpha and numbers to textbox anybody
View 12 RepliesIs it possible to build a Frequency Generator in VB.Net? I would like to be able to select a frequency from a Combobox or a drop down listbox. And be able to save that frequency as a file as well as play the frequency.
View 3 RepliesI have recently completed a project using VB.NET 2008 express edition. Now I have to create a Product Key Generator for which I have no clue how that works. I wanna do it in such a way that the product can't run without the valid key and the key can only be used for one copy of the product. Also if possible how do we generate a Unique Product ID?
View 3 RepliesHow to develop a barcode generator and able to print it out? Google so long but unable to find any sample to do it.
View 2 RepliesIn the Designer of my forms I usually have this for Singleton purposes.[code]Is there any hack in the IDE that would let me just press a button or something and it will automatically add the code I have above to the selected Designer?I can always type or copy/paste/modify it but I thought there could be something that I could set to just automate this redundant task.
View 7 RepliesI was wanting to add a random number generator to an app of mine and I have the code that creates it:
Private Function RandomNumber(ByVal min As Integer, ByVal max As Integer) As Integer
Dim random As New Random()
Return random.Next(min, max)
End Function 'RandomNumber
What I can't get to work correctly is the following. I have a textbox for the min and max. The way I have it setup is when it generates it I have a MessageBox show it but it pulls the same number a few times in a row. How do I make it pull a different number each time until all numbers a pulled. I then want to add them to a listbox as each one is generated.
ok what i'm trying to do is make a pattern generator. i will have to do some substuutting too.ex:i wand to make A=1,B=2,C=3 ect.......the pattern is 3,3,2,3,3,3,2and say i make a button called "E" when i click that i want the patter from e since E=5 in the textbox it shoud come up "E,F,G,H,I,J,K,L" up to 8 thats all i want is it possible
View 17 Repliescan someone help me with a live link to get the Bootstrapper Manifest Generator .is there one for vb.net 2010. the link that I got on url...
View 2 RepliesOkay, this is the final part to my program, making the registration keys...
i have no clue on where to start, i think it starts w/something like this, right?[code]...
how to a generator random password in vb.net. can u tell me any algorithms, any method() or codings to do so mine is a web application where i should generate password and send it to user and tat password will be their life time password. so it should b unique too.
View 2 RepliesIm doing a project where the computer generate a random date and the user has to guess what day of the week it lands on. I have the random generator but I would like to change it where the month is not a integer.For example, March 30, 2012 instead of 3/30/2012. Here is my code so far [code..]
View 1 RepliesCreate an application that allows the user to guess a random number generated by the computer.When the user makes an incorrect guess, the application should move an image either upr or down, depending on how the guess compares to the random number.If the random number is greater than the user's guess,the application should move the image up to indicate that the user needs to guess a higher number.If the random number is less than the user's guess,the application should move the image down to indicate that the user needs to guess a lower number.The game ends when the user guesses the random number.However, the application should allow the user to stop the game prematurely.When that happens the application should siplay the random number.I have tried every which way I can think of including using a textbox instead of an inputbox and playing around with the syntax - but just can't seem to get it right.[code]
View 1 RepliesI need to create a multi dimensional array comprised of random numbers between 1 and 4. The reason why I need a mutidimensional array is because each number needs to be associated with a random letter of F or N. [ F or N are really Indicators or whether I should show the user Feedback on their results in the case of F. Or not show them Feedback in the case of N.] So within this array 2 random numbers will be associated with random F's. And 2 will be associated with random N's. For example the array should look like (1,F 2,F 3,N 4,N) or (3,N 2,F 1,N 4,F). The reason why I need this random array is because during the course of my application being ran 4 times (which represents the numbers) I want to insure that every time N is done 2 times and F is done 2 times. This is all to make sure that each Number 1-4 after 100 times the application is ran has the same amount of F's and N's. I was also wondering if someone knows a way to store how many times the application has been ran in asp.net so that I can recreate another random string after 4 application runs.
View 8 Repliesi already ahve a random number generator. the question is this, how do i go to the next number in the sequence when the random number generator is run.
View 8 RepliesOk so i would like to have like a list of lets say 500 words. I would like to randomly select 5 of them. Almost like a random number generator. iam using this software http://tiny.cc/2eufdt2k1k
View 2 RepliesI'm the head of my companies IT Engineering Security Department. We handle all the user account creations, access rights, file shares, terminations, badges...etc. To make the task of user accounts creation easier, I am looking to create a Password Generator that runs off of "Word Banks" if you will.Right now I have 4 ComboBoxes with a list of words in each. I want to make it so that when I click "Button1" it will Randomly populate each ComboBox with a word from their respective lists and then all compile, in order, in a TextBox at the bottom of the App so we can copy it out to use for our respective account creations.
Example:I know nothing about VB's randomization functions, so I don't even know where to begin.I'm using VB Express 2008, but can use 2010 if needed.
I made an application that manages someones pets. It's fairly simple, a grid showing all pets and their properties, to which the user can add new pets, edit existing pets and remove pets. Properties of the pets include name, color type, birth date and more importantly the animals father and mother (not sure if that are the right terms for animals, but meh). The father/mother must be chosen from the same database and their IDs are stored as FATHER_ID and MOTHER_ID in the current animal, so only existing pets (eg, pets added to the database) can be chosen as father/mother.
Now, the application needs to be able to show a pedigree of each pet. It should show the details of the current pet, preferably with a picture, followed by its father and mother, and their details. The same is done for both father and mother, and for them, etc, etc, until its has covered a few (4 or 5) generations.
I realize this may be a little hard to understand, so here's an "artist rendition" of what it should look like: As you can see it should display the name of each family member and some of its details. As you go up in the tree (to the right actually) the room gets smaller so less details are shown, until only the name remains. Obviously the blank areas should be filled with similar information, but I was lazy and paint wasn't really cooperating.
i would like to know how create a programm with a "license checker" and after you logged in you can use the programm .
i already build a "checker" http://mila432.com/files/vb/
and programms http://mila432.com/files/patcher/
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I would like to make a program that takes input as a string like 'dsfljsfkj' then output 2D Barcode (DataMatrix format, or other 2D formats) as an image file in VB.NET
Do you have any idea how can I make it without using any other commercial .dll's?
I m new to VB and i just need a special keygen which i dont know if exists yet or not.First off i'd like to mention that i dont want to make a keygen that will generate a random key out of keys that i have to manually code in (cases) E.G.
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I want to know how to make a keygen that will generate a letter/number randomly out some example letters which would need to be defined.E.G.Random number out of 0-9 (0,1,2,3 etc) Random letter from A-Z (A,B,C etc) And then obviously display generated key in TextBox. Ideally i would like to improve this more but if i could get the basics then i would move on from there
I use excel through vb.net/asp.net to generate reports from a web page and then send the file down to the user. We've had some issues with Excel being super slow/inefficient/not closing (even when we keep track of the process id and try to kill it in code...). So I'm looking for some flexible alternatives. We need a replacement that can:
Allow for inidivdual cell formatting including borders (different settings on each side), background colors, font styles/coloring, etc...Allow for cell merging Allow for formatting (bolding in this case) of a portion of the text inside of a cell while leaving the rest of the text unchanged Image insertion/repositioning inside a cell (not crucial)Multiple Worksheets per Workbook.
These are all the features I can think of off hand, any help or suggestiong at alternative libraries to look at would be appreciated. We are running Excel 2007 on the server but we are rolling out Office 2010 to clients so I think that might open the doors for some more supported file formats.