VB.Net by API/System.Security.Cryptography/HMACSHA1

HMACSHA1.ComputeHash

  
Imports System
Imports System.IO
Imports System.Security.Cryptography
Imports System.Text
Imports System.Runtime.Serialization.Formatters
public class MainClass
   Shared Public Sub Main(ByVal CmdArgs() As String)
        If (CmdArgs.Length <> 1) Then
            Console.WriteLine("usage: TestKeyHash <filename>")
            End
        End If
        Dim key() As Byte = Encoding.ASCII.GetBytes("My Secret Key".ToCharArray())
        Dim hmac As HMACSHA1 = New HMACSHA1(key)
        Dim fs As FileStream = File.OpenRead(CmdArgs(0))
        Dim hash() As Byte = hmac.ruputeHash(fs)
        Dim b64 As String = Convert.ToBase64String(hash)
        fs.Close()
        Console.WriteLine(b64)
    End Sub
End Class

New HMACSHA1

  
Imports System
Imports System.IO
Imports System.Security.Cryptography
Imports System.Text
Imports System.Runtime.Serialization.Formatters
public class MainClass
   Shared Public Sub Main(ByVal CmdArgs() As String)
        If (CmdArgs.Length <> 1) Then
            Console.WriteLine("usage: TestKeyHash <filename>")
            End
        End If
        Dim key() As Byte = Encoding.ASCII.GetBytes("My Secret Key".ToCharArray())
        Dim hmac As HMACSHA1 = New HMACSHA1(key)
        Dim fs As FileStream = File.OpenRead(CmdArgs(0))
        Dim hash() As Byte = hmac.ruputeHash(fs)
        Dim b64 As String = Convert.ToBase64String(hash)
        fs.Close()
        Console.WriteLine(b64)
    End Sub
End Class