Different SHA1 Hash Values Obtained From PHP?
Sep 7, 2011
I 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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May 26, 2011
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
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Mar 28, 2012
This is my coding for displaying access database values to listbox. It is working but it displays the values without a space like this: (The columns are: ID, NName, gender, age)[code]....
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Jan 20, 2012
I still can't assign the process the username of the session id that is associated with it.[code]...
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Aug 10, 2009
I'm trying to figure out a way to compare two "salted-hash" strings. How can I do this? I know that the salt is a random generated value that's appended to the plain text, then we just compute the hash of that new string.So how can I compare these two values? O_O (The new hash that the user hash written in a textbox and the hash stored in a database)
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Mar 14, 2012
I have implemented a function that calculates the hash value of important system processes. I have a question that if new memory pages are created in the memory space of certain system processes wont their hash value change. Cuz the previously calculated hash values and after the memory pages are created are exactly the same.
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May 26, 2011
I'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
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Jun 21, 2010
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.
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Jul 18, 2009
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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Jan 26, 2011
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]
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Jun 8, 2009
SELECT COUNT(StudentId) FROM firstterm where class='Nursery'
SELECT percentage, StudentId FROM firstterm WHERE class= 'Nursery' ORDER BY percentage DESC
this shows result like this[code]...
now in the form i put the 2 text box and and the buttoni take the number 10003 and click the buttonnow in the another text box i need to show that what is the position of the id number 100003 from the above figer it is in the third position
how can i make it through the click button so the the result comes on the front
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Feb 2, 2012
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?
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Mar 6, 2012
I'm trying to pass a variable from a child form that contains a DataGridView, I'm calling a function to do the action, but I can not succeed alone function gets the value but does not alter the form's datagridview father, the code I'm using is:
Invoice_new (Parent FORM):
Controls:
DatagridView: invoice_items
Public WriteOnly Property ValueFromChild() As String
[Code]....
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Nov 27, 2010
1) How do I use cookies obtained from login to do subsequent requests? e.g. Login to a forum, then use the cookie obtained from login to access User CP and change settings.
2) How do I parse HTML via HttpWebRequest? Does mshtml work with HttpWebRequest? If so, how do I work with it? I thought of downloading the source code of the page I'm requesting into a richtextbox and do my stuff from there, but it sounds kinda impractical to me since I have to use regex to get the innertext of stuff (or not?).
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Aug 22, 2011
code:
<span>Public Structure UUID
Public Data1 As Long
Public Data2 As Integer
Public Data3 As Integer
Private m_Data4() As Byte
[Code]...
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Nov 16, 2011
I am at a bit of a loss at the moment. What I am basically writing is the password elements of a membership system. What I do is generate a random salt value, take the registered password, combine the two and then pass the new string through a function which will generate a SHAManaged 512 hash.
I then convert the hash and salt string into Byte arrays and store these in my database.The problem comes when I then compare a login attempt against the original value I am being supplied with a completely different hash for the password being presented by the user, even though it should be exactly the same.
Here is my code when someone registers their new account:
[Code]...
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Aug 3, 2010
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The garbage collector in .NET moves objects, so the object's address is not stable. How is Object's GetHashCode() method implemented?
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Dec 1, 2010
I have an openfiledialog, I show the dialog and the user selects there file. How could I calculate the MD5 hash of the OFD.filename/file opened? Or calculate the SHA1, what ever is easiest.
PS: This is in Visual basic 2010 Express.
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Nov 7, 2010
I know MD5 hashes have been asked about 1000+ times, but this question is slightly different.I am looking to find the true MD5 hash of an image, but without using a string for the file's location. I am looking to be able to call on the image inside of a picturebox rather than somewhere on my computer or the internet.
For example, I want to find the MD5 hash of an image inside of my picturebox.
If this doesn't make sense, please ask any questions you may have.
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Dec 26, 2010
im creating a simple login / registrate form in visual studio 2008 anplant Hash and salt to my login and registrate forms, im using mysql to connect to a online mysql serverthis is my codes i ahve now
Form 1 - Login
Try
DB_Connect = New MySqlConnection()
[code].....
i really need this working, all works but nothing is encrypted
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Feb 6, 2012
I have a page with a URL that includes a hash value (www.mysite.com/#123).What I want to do is use that value to determine what is displayed on the page - much like using a querystring.I am using the hash value because the content on the page can be changed client side (I am avoiding page reloads where possible) - if the user then links to another page and uses the back button to return, I need to use the hash value to display the page as it was when they left it.So I'm looking for an if statement that will look something like this:
[code]...
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Mar 21, 2009
I would like to write a function GetHashCodeOfList() which returns a hashcode of a list of strings regardless of order. Given 2 lists with the same strings should return the same hashcode.
ArrayList list1 = new ArrayList()
list1.Add("String1");
list1.Add("String2");
[Code].....
I can first sort the list, then combine the sorted list into 1 long string and then call GetHashCode(). However sorting is a slow operation. I can get the hash of each individual string (by calling string.GetHashCode()) in the list, then multiplying all hashes and calling Mod UInt32.MaxValue. For Example: "String1".GetHashCode() * "String2".GetHashCode * ... MOD UInt32.MaxValue. But this results in a number overflow.
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Apr 10, 2012
I 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()
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Oct 1, 2010
I am using the following piece of code (where sId is a Unique Id in our system) to generate Unique Hash value of 16 characters Max in length
Dim oMD5Hash As System.Security.Cryptography.SHA1 = System.Security.Cryptography.SHA1.Create()
Dim sHash As String =
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Jun 7, 2012
I am having issues to hash with sha 1 salted in vb. I have an SMF forum and it uses SHA 1 salted to encrypt its passwords. I want to make a program which is only available to users who have registered in my forum so I have to create a login system in my program. The problem is that how do I hash to SHA 1 salted in vb?I have explained what I want to do a bit more in details below:User opens program >They login using their forum account details >Program hashes the PASSWORD the user has entered to SHA 1 salted >The program then connects with the forum's database and compares the password value > (The Username is checked first tho)
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Dec 18, 2011
The code below allows a user to enter user name and password to log in to enter marks of students. SQL data reader verifies the user credentials from the database before authentication takes place. modify the code by salting and hashing the password.
Dim frm As New MarksEntryFrm
Dim flag As Boolean
flag = False
[Code]....
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Apr 1, 2011
I am porting over some code from .net (vb) to php and I came across some md5 hashing that I can't reproduce in php. In the .net one there are two functions one uses UTF-8 encoding and the other uses Unicode encoding. The output is a different hash when passed in a string
// First function (returns GUID)
Dim oHasher As Cryptography.MD5 = Cryptography.MD5.Create()
Dim oEncoder As New System.Text.UTF8Encoding()
Dim csData() As Byte
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but they both produce the same result. Is it possible to produce the same results in php with md5 hashing?
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Jul 19, 2011
How do I retrieve a hash value when the value itself is an object.I am giving an example here
dim ht as new hastable
dim person as clsperson
ht.add(0, new ("AAA", "16", "23425345")
ht.add(1, new("BBB", "18", "464745756")
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Apr 21, 2012
PLATFORM VERSION INFO
Windows : 5.1.2600.131072 (Win32NT)
Common Language Runtime : 2.0.50727.1433
[code]....
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May 29, 2009
I was asked by an employer to sort a hash table. I always thought that the usage of a hash table was in a way non-sort friendly. Am I wrong in thinking this, and if not can you point me to a good VB.Net(Yes Kill me now, but it's an old system) method of sorting a hash table.
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