Asp.net SHA256 problem

[atakan]

Hi

I'm trying to hash a password by using SHA256Managed but it returns wrong
hash.

for "123123" the SHA256 must return
"96cae35ce8a9b0244178bf28e4966c2ce1b8385723a96a6b838858cdd6ca0a1e" but it
returns
"eUFcNsFFljNAhC8b5OnauOs0o0txyAUB/b0QTmDRTN0="

Why this difference occurs in SHA256Managed namespace ?

the code I used is below

Dim txtPass As String
Dim HashValue() As Byte
Dim UE As New System.Text.UnicodeEncoding
Dim ContentBytes As Byte()
Dim oSHA As New SHA256Managed
ContentBytes = UE.GetBytes(txtPassword.Text.ToString)
HashValue = oSHA.ComputeHash(ContentBytes)
txtPass = Convert.ToBase64String(HashValue)

regards
Atakan

 

[atakan]

In microsoft.public.tr.dotnet group Cenk Iscan has solved the problem.
To use SHA256 you can use following sample

Dim txtPass As String
Dim HashValue() As Byte
Dim UE As New System.Text.UTF7Encoding
Dim ContentBytes As Byte()
Dim oSHA As New SHA256Managed
ContentBytes = UE.GetBytes("123123")
HashValue = oSHA.ComputeHash(ContentBytes)
For Each chars As Byte In HashValue
If Len(Hex(chars).ToString) = 1 Then
txtPass &= "0" & Hex(chars).ToString
Else
txtPass &= Hex(chars).ToString
End If
Next
txtPass = LCase$(txtPass).ToString

regards
Atakan

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