ASP.NET: Encryption and Decryption Base64

    Public Shared Function Encode(ByVal Str As String) As String
        Dim enc As System.Text.Encoding = System.Text.Encoding.Default
        Dim ByteArray As Byte()
        ByteArray = enc.GetBytes(Str)
        Return System.Convert.ToBase64String(ByteArray)
    End Function

    Public Shared Function Decode(ByVal Str As String) As String
        Dim enc As System.Text.Encoding = System.Text.Encoding.Default
        Dim ByteArray As Byte()
        ByteArray = System.Convert.FromBase64String(Str)
        Return enc.GetString(ByteArray)
    End Function

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