SHA512 Encryption - Encrypt The Word 'test' And Get Encrypted Hash
Jun 11, 2011so I'm creating a program that creates a SHA512 hash. I have a problem though. I try to encrypt the word 'test' and I get this encrypted hash as:
[Code]...
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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.
Using SHA256 + SHA512 Hash For Password?
Dec 1, 2011I'm creating a method that I will use to hash password to store in a database. I would like to seek advice if my methods in hashing is sufficient or overkill for the task.
Dim result As Byte()
Dim mixer As String
ry
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Access Vba - Console App To Return SHA512 Hash?
Jan 24, 2011I'm trying to write a console application in VB.Net (2008) to accept a command line argument input (a password) and output the hash. I modified the code here so that it would accept an argument and I added my own salt/key but the output appears to be incorrect when compared to PHP's output for the same password and salt.I need something like this so I will have a way to get a SHA512 hash using MS Access VBA. Can you recommend a better solution than what I'm trying or point me to something simpler than the link above? I could possibly post my code here but it's quite long.
View 1 RepliesSHA512 Hash - Input String Not In Correct Format
Jun 21, 2011I have the following function for generating sha512 hashs. The hash is generated successfully, but is causing this error when the resulting string is passed to other functions:
Input string was not in a correct format
When debugged the variable holding the returned hash (set as string) is empty. I have tried changing the type to int, int64 and byte (array and standard variable) in the function and in the calling code, which causes various other errors. How can I change the datatype correctly to solve this?
Function create_hash(ByVal password, ByVal salt)
Dim salty As String = password & salt
'convert salty password to binary to feed into hash function
Dim encText As New System.Text.UTF8Encoding()
Dim btText() As Byte
[Code] .....
Calling code:
Dim i_h_pass As String
Dim i_pass As String = pass.Text
'handle password generation (matching passwords checked at validation)
Dim newHash = New hashing
Dim salt As String = Convert.ToString(newHash.create_salt)
i_h_pass = Convert.ToString(newHash.create_hash(i_pass, salt))
The create_salt function has also been checked - it works perfectly and returns a random integer, returned as string for convenience.
Hash - Encrypt A String Using HmacSHA256 In .NET?
May 8, 2009I need to create a keyed hash for a string of XML to send to a 3rd party. This is the code I am using but it is producing a different hash then the example the 3rd party has sent me.
Public Shared Function HashString(ByVal StringToHash As String) As String
Dim myEncoder As New System.Text.UTF32Encoding
Dim Key() As Byte = myEncoder.GetBytes(My.Settings.PortalHASH)
Dim XML() As Byte = myEncoder.GetBytes(StringToHash)
[code]....
It needs to be base-64 encoded, which is why I have the last line.
Salt / Hash And Encrypt Pwd In Database
Jun 11, 2011Im a final year student for COmputer Security / Forensic. Im planning to do a project which requires me to do encryption and decryption. My possible choice of language would be VB.Net. I was wondering if wad is running in my mind can be executed. Well, I would make a application where a part of it wil be promting the guest to register and I wanted to store the password in the database. I did some research and came across Salting and Hashing. I was wondering if is it possible to get the password which the user enters, salt it, hash it and encrypt it before I store in the database. If so, what is the best secured strong encryption can I use in VB.net. Because through out the research I have done, i have sen RInjdael as the most fav encryption algo which alot of programmers using.
View 3 RepliesEncrypt A String Via 128+-bit Encryption?
Apr 23, 2011I am not sure if there is such thing in VB.NET via 128-bit Encryption or more. [code]...
View 12 RepliesEncryption - Encrypt In .NET With AES-256 And Decrypt In Air?
Jul 28, 2011I 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.
Encrypt A String Using AES 256-bit Encryption With A Custom Key
Jul 28, 2009I need some help with encrypting a string. I want to encrypt a string using AES 256-bit encryption with a custom key. How can I go about doing this?
View 3 RepliesEncrypt And Decrypt Files Using TripleDes Encryption?
Dec 26, 2011I'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]....
Writing A Program That Will Encrypt Text Using AES Encryption
Feb 14, 2009I need some help with writing a program that will encrypt text using AES encryption. I'm not quite sure how to go about doing this.
View 1 RepliesEncryption/Decryption - Code To Encrypt A File->networkstream->Decrypt The File
Feb 28, 2011I'm having trouble writing the code to encrypt a file->networkstream->Decrypt the file.. I've tried several ways, but I keep failing....
View 1 RepliesPassword And Other Word Encryption
Jun 5, 2009I am using a network connection to my server where users are checked in the MySQL database for authentication, but I noticed even after I obfuscate the code you can still use a decompiler to read the password from within the code and other security details. How can I encrypt these?
View 6 RepliesEncrypt A MS Office Word Document?
Aug 6, 2009I have successfully managed to encrypt .txt files with no problem, using RijndaelManaged. Now I need to encrypt/decrypt word documents, however when I try to encrypt a .doc/.docx the decryption goes south and when I open the decrypted file it shows a bunch of gibberish.
View 4 RepliesDecrypt Java AES 128Bit Encrypted String Which Has Been Encrypted Using Key Only (no IV) ?
Oct 14, 2010I am attempting to find some code to use in VB.NET to decrypt a string that has been encrypted using the Java crypto libary.All of the code I have found so far uses an Initialisation Vector and Key to decrypt but the string has been encrypted using the Key only. (Using an Initialisation Vector is apperently an optional step in Java).Does anyone know of code that I can use (preferably in VB.NET but i could convert C#) to decrypt AES 128 Bit encoded string without an Initialisation Vector?
View 1 RepliesSHA512 Generate Different Result?
May 3, 2011I tried to use the following code to generate hash string,
Dim data() As Byte
Dim result() As Byte
Dim uEncode As New System.Text.UnicodeEncoding()
[code]......
Get The Index Number Of "test" Word?
Sep 6, 2009I want to get the index number of "test" word. This codes only get a char's index number.I want to find "text" and it's first char "t" index number.How can I get the index number of a word like "test". Do you have an opinion?
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.net Encryption Result Does Not Match The Xcode Encryption Result Given The Same Input Parameters?
Jun 21, 2011I 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]...
Argument Not Specified For Parameter 'test' Of 'Public Shared Function TestThis(test As String)'?
Sep 25, 2010I don't understand the error, Argument not specified for parameter 'test' of 'Public Shared Function TestThis(test As String)'.
Partial Public Class Form1
Shared Sub ReceiveCallback(ByVal ar As IAsyncResult)
Form1.Invoke(TestThis, New Object(){"test"}) 'error
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Reference To Test.dll But An Error Messege Was Appear A Reference To Test.dll File Could Not Be Added?
May 25, 2009[code]...
and from VB6 project I reference to Test.dll but an error messege was appear A reference to Test.dll file could not be added (If I create VB NET project and reference to file Test.dll it OK )
Write A Unit Test Assembly In C# To Test Against An Assembly Written In VB?
Sep 20, 2011Probably a dumb question, but can you write a unit test project in one language to test against another project in a different language?I'd like to translate one of our VB assemblies into C#, but want to build unit tests to verify the results. I've tried to set a unit test project up to do this, but I can't seem to access the VB code within a unit test... I can't figure out if I'm just missing/doing something stupid, or it really isn't allowed.
View 2 RepliesGetting A Different Hash Value?
Nov 16, 2011I 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]...
C# - How Is Hash Implemented In .NET
Aug 3, 2010[Code]...
The garbage collector in .NET moves objects, so the object's address is not stable. How is Object's GetHashCode() method implemented?
Calculate A MD5 Hash?
Dec 1, 2010I 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.
MD5 Hash Of Images?
Nov 7, 2010I 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.
Store The Encrypted Value In The Dll?
Jun 7, 2010I would like to know how I could encrypt the url and store the encrypted value in the dll?
And I would also like to decrypt it from the dll when I need it for later?
Add Hash And Salt To Project?
Dec 26, 2010im 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
Anchor - If Statement Using The Value Of Hash In URL?
Feb 6, 2012I 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:
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C# - Getting Hash Of A List Of Strings?
Mar 21, 2009I 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.