Drupal 7 Password Hashing Algorithm?

Jul 23, 2011

How can I Implement Drupal 7's Hashing Algorithm into my software so that I can make a database query that allows the user to login? I know that they use SHA-256 bit and they use Base64 encoding and a salt generating algorithm...


VS 2008 - Hashing A File - Using The SHA256 Algorithm

May 6, 2009

I know I can MD5 hash a file, but how do I go about using the SHA256 algorithm?

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Create A FCS16 (Frame-Check-Sequence) Hashing Algorithm?

Nov 9, 2011

I've been trying to create a FCS16 (Frame-Check-Sequence) hashing algorithm, but so far the only explanation I've found is this [URL]and I'm having trouble writing the code.

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VS 2008 Salting Then Hashing A Password?

Nov 30, 2009

Im trying to make a little login app that connects to my mysql. But I cant figure out how would i salt the password then hash it?

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Using Drupal Profile Date - Converting Into Correct Format?

Sep 30, 2010

I am using drupal database in one of my application. Drupal profile saves date in following format:
I can read this with data reader but how to convert in a proper display like DD/MM/YYYY or YYYY/MM/DD

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Implement An Algorithm Called "Diamond-Square Algorithm"?

Jun 8, 2009

I am trying to implement an Algorithm called "Diamond-Square Algorithm" I am having trouble ending it so that it retiurns the required result. So far I have the folloiwng.


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Convert This Hashing Method From C#?

Aug 21, 2009

public static string CalculateSHA1(string text, Encoding enc)
byte[] buffer = enc.GetBytes(text);
SHA1CryptoServiceProvider cryptoTransformSHA1 = new SHA1CryptoServiceProvider();


VStudio keeps yelling at me for just what I have so far most specifically the bracket at the end of Byte?:

Private Sub CalculateSHA1(ByVal text As String, ByVal enc As Encoding)
Dim buffer As Byte[] = enc.GetBytes(text);
End Sub

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CryptoStream And CRC32 Hashing?

Feb 11, 2012

I'm encrypting a file with AES using CryptoStream. I'm also creating a CRC32 hash of the original file data. Later I need to decrypt the file and create a CRC32 hash of the decrypted data, in order to check if the decrypted file is 100% the same as the original file.

This is a part of the encryption routine. I'm reading a file in chunks and writing them encrypted to a new file. At the same time I'm creating a CRC32 hash of the chunks of data, which will give me the CRC32 hash of the entire file in the end. This works fine.

'// Create the CryptoStream
Dim Crypto_Stream As New CryptoStream(FS, crypto_transform, CryptoStreamMode.Write)


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Hashing Files Bigger Than 2GB?

Jan 2, 2010

I have discovered that the .Net Hashing functions, MD5, SHA1, and SHA512 (all of them probably) do not allow us to create hashes of files greatedr than 2GB in size. If I use a function like the following:



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Hashing Individual Contents Of Array

Nov 8, 2011

I'm trying to teach myself arrays as I have not extensively worked them. So I thought of a basic program to hash the contents of an array and list the output of the array word next to the hash value of it.


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VS 2008 Updating An Application From Internet - Hashing Method

Aug 5, 2009

I have created an updater for my application. When the application starts the user can launch an updater that will check for the latest version. Download it and copy the files to where the installation is.

Everything works fine.

However, I am looking for a more robust technique. And I have discovered it is better to hash the files on the web server with a hash algorithm and then when they have downloaded use the same hash algorithm to compare the hash values. If they are different either the files were corrupted when downloaded or some modified them without permission.

However, my problem is where do I store the hash values? I was thinking of hashing the files, and storing all the hash values for each file in a text file, and my updater will download that text file.

I am not sure if that is the best technique to use of not? Is this the normal and best way to do this?

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Perform Two Hashing Operations Concurrently On A Single File Without Reading The File Twice?

May 18, 2011

I want to perform two hashing operations concurrently on a single file, without reading the file twice. Is there some way to share the FileStream between two synchronized hashing threads? For example:

Dim Stream As New IO.FileStream("...", IO.FileMode.Open)
Dim HashA, HashB As Byte()
Dim A = New System.Threading.Thread(Sub()


Maybe some way of caching a stream? Trouble is, I don't want the entire file in memory at once (it could be many gigabytes in size) and I don't want the file read more than once, due to speed issues. I want the file cached only sufficiently to ensure that both threads can work.For example, suppose at some point in time, thread A had read 100k of the file, but thread B had only read 20k of the file. The portion of the file between 20k and 100k should be cached; but then progressively forgotten as thread B catches up. Then again, if thread B is too slow, we might still end up with hundreds of megabytes being cached.Maybe thread A should be made to wait while thread B catches up. Maybe the ReadByte() function of the stream should block for a while if one of the threads is too far behind?

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Checking AD Password - Create A Password Change Form For My Company's Vendors

Jan 15, 2012

I'm trying to create a password change form for my company's vendors. There are a couple of scenarios I could encounter doing this:

1 - User enters invalid current password
2 - New passwords do not match
3 - User's account is locked
4 - User cannot authenticate because password is expired

It's case 4 that I'm struggling with, because their is no way for me to take the password the user entered and verify it against active directory without getting an error.

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Membership ChangePassword (hashed) Match Current Password Against Old Password Field

Jun 1, 2011

I am implementing a system where the user can Reset their password if they have forgotten it.Once it is reset I want to give them the option of changing the password so that it will be something more memorable to them.The password is hashed and if i enter in the correct old password and new password the password does change.If I enter in the wrong old password and new password the password doesnt change.Is there a way to match the old password with the old password field in code behind so I can throw up an error to the user to tell them what is wrong? [code]

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Password Characters - Get A Textbox Being Using For Password Entry To Display The Black Circle

Feb 10, 2009

How do you get a textbox being using for password entry to display the black circle that you often see in web forms, on the iphone etc etc?

I can change the PasswordChar property to an asterisk no problem and even copying and pasting symbols inserted into Word seemed to work - just couldn't find a symbol that looked like a bullet point!

Can this actually be achieved for a standalone exe, or is it something unique to web forms? Surely copying and pasting symbols from Word isn't actually the answer?

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Pass Password If Excell Sheet Have Password And Enable Macro?

Jul 25, 2011

I read and write the cells from excell sheet sucessfully. now please i need a advise on the following

1. Where i save the file? at the time of project publishing it include also with the project?

2. how i check file exits or not?

3. How i pass the password if excell sheet have password and enable macro?

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Password Implementation - Program To Start With A Prompt That Asks For A Password

Apr 21, 2010

I'm currently working on a CRM project in vb.net. I want the program to start with a prompt that asks for a password and if the user enters the correct password then the main form loads.Im having some problems wrapping my mind around this...

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Create A Simple Password Box That Will Ask The User For A Username And Password?

Jul 15, 2009

I am looking to create a simple password box that will ask the user for a username and pass, if the user is validated against the usernames and passwords in an .ini file the login box will close and launch a program also stated in the .ini file. I would also like to be able to launch different programs for different users.

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Password Encryption - Way To Inerlock Letters In A Password?

Dec 2, 2009

Is there a way to inerlock letters in a password. EX: lets say my password is 1234567password, is their a way to interlock or inject random letters/numbers /symbols/etc into the password? Ok so our password is = 1234567password is their a way to make it like this = g1i2h3h4q5d6g7rp4a7s;?s`w6o+r/d5

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Reset The Existing Password (topsecret) With A New Password

Jan 15, 2012

how to reset the existing password(topsecret)with a new password by using the "replace" keyword

in the below code shown

Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load


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Show Instead Of The Password It-self When The User Enters The Password?

Apr 10, 2010

I have a button on my Form called EditingButton that will have a DialogBox appear asking for a password. How can I have "*" show instead of the Password it-self when the user enters the password?[URL]...

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Validate The Given Password Is Same As The Current Users PAssword?

Mar 21, 2011

I have developed a task Using VB.net (windows Application). I want to create a Login window for the Current user only allowed to use my application.So In my Login window UserNAme textbox I have showed the curent Login UserNAme like,

txtUserName.Text=Environment.UserDomainName & "" & Environment.UserName
And I have set txtUserName.Readonly =True.
Now the User to type the Password in my application password textbox.


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Save Data (some Text That User Type [as Password Etc]) And Save That Password On Same Location Where Is Application?

Dec 25, 2011

how to save data (for example some text that user type [as password etc]) and save that password on same location where is application. After saving I want to have also Load option so we can load saved data.

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Looking For An Algorithm In C#?

Apr 14, 2010

I'll do my best to explain what the algorithm is supposed to do:There's a class 'Recipe'.ach Recipe can include other Recipes but cannot include itself or any other Recipe that includes it. So, a simple example is we have just two Recipes A & B.A,B,C(1) Recipe C Adds B(2) Recipe B Adds A(3) Recipe attempts to add C, but can't because of the relationship. C- B - A.

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RSA Algorithm

Sep 8, 2010

I'm Micah. Electrical/Electronic engineering 500 level student. I'm working on my final year project. please i need a code for the implementation of RSA algorithm in VB.NET. your assistance will be appreciated.

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Algorithm For VB Editor?

Dec 26, 2009

is the algorithm for VB editor released anywhere? because i'm trying to create my own editor that gives various options like Linking and self defined array functions (see below) such that one edit can update several others in various places, but i do still wish to have the auto formatting VB editor provides us with.an example of a self defined array function (count):we can transform this:

Public Class test
Private Shared number_of_methods As Integer = 2
Public Function get_number_of_methods_juz_an_example() As Integer
Return number_of_methods


well of course instead of the code it would be just click and select (i wrote out the code in <> just to show what's happening)

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BLS Algorithm Guide

Mar 15, 2012

i need some tutorial to implement BLS (Boneh-Lynn-Shacham) signature algorithm to create private key and public key to encrypt a message.I need tutorial to implement this in VB.NET.

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Converting And Algorithm In C# To C?

Oct 21, 2005

I found an algorithm in C# that I need to convert to C. Problem is, I have never used C# so the syntax is really strange to me.

Implementation of Berlekamp-Massey algorithm for calculating linear complexity of binary sequence
s = byte array with binary sequence
returns Length of LFSR with smallest length which generates s


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Create My Own Algorithm?

Dec 14, 2010

I want create my own algorithm

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Using Own Encryption Algorithm In VB?

Aug 21, 2009

How would I be able to use my own Encryption Algorithm in my program such as encrypting text. I havn't been able to figure this out.

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An Algorithm Which Can Calculate 500 factorial?

Aug 25, 2007

can you write an algorithm which can calculate 500 factorial.scientific symbol(mode) is unauthorized.Answer should be in String mode.

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.net - Intelligent Selection Algorithm?

Apr 29, 2009

I am using VB.NET and I am trying to come up with some algorithm or some pseudo-code, or some VB.NET code that will let me do the following (hopefully I can explain this well):I have 2 collection objects, Cob1 and Cob2. These collection objects store objects that implement an interface called ICob. ICob has 3 properties. A boolean IsSelected property, a property called Length, which returns a TimeSpan, and a Rating property, which is a short integer.

OK, now Cob1 has about 100 objects stored in the collection and Cob2 is an empty collection. What I want to do is select objects from Cob1 and copy them over to Cob2. I want the following rules obeyed when selecting the objects though:


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Algorithm For Temperature Conversion?

Nov 20, 2009


So far, my friend has this, and we're trying to figure out how to get the code to tell convert F to C, and back. All we can use for input is (example:) 10,f and it will change it to 40,C.

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C# - Implement Your Own Sorting Algorithm?

Apr 29, 2011

Forgive me if this is a silly question....but I think back to my Comp. Sci. classes and I distinctly remember learning/being quizzed on several sorting algorithms and the corresponding 'Big O' notation.

Outside of the classroom though, I've never actually written code to sort. When I get results from a database, I use 'Order By'. Otherwise, I use a collection class that implements a sort. I have implemented IComparable to allow sorting; but I've never gone beyond that.Was sorting always just an academic pursuit for those of us who don't implement languages/frameworks? Or is it just that modern languages running on modern hardware make it a trivial detail to worry about?

Finally, when I call .Sort on a List(Of String), for example, what sort algorithm is being used under the hood?

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Convert Algorithm From C# To .NET Fail?

May 30, 2011

I'm trying to convert the following algorithm from C# to VB.NET and the VB.NET I have is not producing the same results as my C# algorithm, can someone tell me where I've gone wrong in my conversion?

public static IEnumerable<T[]> Combinations<T>(this IEnumerable<T> elements, int k)
List<T[]> result = new List<T[]>();


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Encrypt Vbs File Using Some Algorithm?

Oct 17, 2011

I need to encrypt vbs file using a cryptographic algorithm. I read about converting it into vbe file, but is there any other way to do it?

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Euclid's Algorithm And While Loops

Mar 17, 2011

I have visual studio 2008, and we have been given specific tasks to carry our for our course, we have been asked to implement euclid's algorithm by using a while loop, doing so without the visual part of visual basic whatever that means an example of a question they gave was 1)HCF(88,26)=2 how I would go about doing this, as I am thoroughly confused, and deadlines are fast approaching.

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Find And Replace Algorithm?

Sep 9, 2010

I have some text files that contain

<img width="100" or

<img width="1400" or....

How could i replace all above with the following, since the image width is not static?

<img width="200"

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Getting Code Of Antnet Algorithm

May 8, 2012

i am working on project of using ant colony optimization and espcially on antnet algorithm but i have many problems in programming of this algorithm, and since i dont perfer using simulation for that purpose.

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Implement Bankers Algorithm In .net?

Jan 10, 2010

i want to implement bankers algorithm in vb.net how can i implement it

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