Convert Binary to String

Question

I want to convert a password which is stored in binary to normal ASCII form so that i can read it. I need a VBscript for that and script should also return this de-crypted p

Answer 1

try this code ;)

the code :

function BinaryToString(bin)  
 dim next_char 
 dim result
 dim i
 dim ascii
 For i = 1 To Len(bin) + 18 Step 8
        next_char = Mid(bin, i, 8)
        ascii = BinaryToLong(next_char)
        result = result & Chr(ascii)
    Next 
    BinaryToString=result
end function  

Function BinaryToLong(binary_value)
Dim hex_result 
Dim nibble_num 
Dim nibble_value
Dim factor 
Dim bit 

    binary_value = UCase(Trim(binary_value))
    If Left(binary_value, 2) = "&B" Then
        binary_value = Mid(binary_value, 3)
    End If

    binary_value = Replace(binary_value, " ", "")
    binary_value = Right(String(32, "0") & binary_value, 32)

    For nibble_num = 7 To 0 Step -1
        factor = 1
        nibble_value = 0

        For bit = 3 To 0 Step -1
            If Mid(binary_value,1 + nibble_num * 4 + bit, 1) = "1"  Then
                nibble_value = nibble_value + factor
            End If
            factor = factor * 2
        Next 'bit

        hex_result = Hex(nibble_value) & hex_result
    Next 'nibble_num

    BinaryToLong = CLng("&H" & hex_result)
End Function

usage:

response.Write(BinaryToString("00110001001100100011001100110100"))

don't forget to take off " " blank spaces from the binary string

Answer 2

There are so many ways.

If it's a binary reg value then from Help (you did read it, didn't you)

The RegRead method returns values of the following five types.

Type  Description  In the Form of  
REG_SZ
 A string
 A string

REG_DWORD
 A number
 An integer

REG_BINARY
 A binary value
 A VBArray of integers

REG_EXPAND_SZ
 An expandable string (e.g., "%windir%\\calc.exe")
 A string

REG_MULTI_SZ
 An array of strings
 A VBArray of strings

If a string, split on space (gives you an array of strings). The least significant bit is 2^0, 2^1, ..., 2^7.

---

EDIT

---

The normal way, not the only way though, to store a password, is to dump it in the registry.

Reading it gives you an array, not a scalar variable. So ...

The second method, handles cases where it's stored in a file.

Answer 3

If you are dealing with a byte array, you must know the character encoding before you can convert it to string. Without that knowledge the bytes will be converted to the wrong characters.

The ADODB.Stream object can handle byte arrays. Here is a function that that does that:

Const adTypeBinary = 1
Const adTypeText = 2
Const adModeReadWrite = 3

Function BytesToString(bytes, charset)
    With CreateObject("ADODB.Stream")
        .Mode = adModeReadWrite
        .Type = adTypeBinary
        .Open
        .Write bytes
        .Position = 0
        .Type = adTypeText
        .Charset = charset
        BytesToString = .ReadText
    End With
End Function

And here is how to use it:

MsgBox BytesToString(binary, "Windows-1252")

For the sake of completeness, this is the reverse operation:

Function StringToBytes(str, charset)
    With CreateObject("ADODB.Stream")
        .Mode = adModeReadWrite
        .Type = adTypeText
        .Charset = charset
        .Open
        .WriteText str
        .Position = 0
        .Type = adTypeBinary
        StringToBytes = .Read
    End With
End Function

---

Since your input seems to be a string like "00110001 00110010 00110011 00110100", here is a function to convert that to a byte array, which you can then use with BytesToString() shown above:

Function BinaryStringToBytes(binaryStr)
    Dim b, n, i, l

    l = GetLocale
    SetLocale 1031

    With CreateObject("ADODB.Stream")
        .Mode = adModeReadWrite
        .Charset = "Windows-1252"
        .Type = adTypeText
        .Open
        For Each b In Split(binaryStr, " ")
            If Len(b) <> 8 Or Replace(Replace(b, "0", ""), "1", "") <> "" Then
                ' invalid procedure call or argument
                Err.Raise 5, "BinaryStringToBytes", _
                    "Only stings of 8-blocks of 0s and 1s, " & _
                    "separated by a single space are accepted."
            End If
            n = 0
            For i = 0 To 7
                n = n + Mid(b, 8 - i, 1) * 2^i
            Next
            .WriteText Chr(n)
        Next
        .Position = 0
        .Type = adTypeBinary
        BinaryStringToBytes = .Read
    End With

    SetLocale l
End Function

Usage

Dim input, output

input = "00110001 00110010 00110011 00110100"
output = BytesToString(BinaryStringToBytes(input), "Windows-1252")

MsgBox output  ' -> "1234"

And, more importantly, it can handle multi-byte encodings properly:

input = "00110001 00110010 00110011 00110100 11000011 10100100"
output = BytesToString(BinaryStringToBytes(input), "UTF-8")

MsgBox output ' -> "1234ä"

Answer 4

If I'm right, all you're after is converting a binary number to decimal (eg 0100 -> 4)?

dim binary, n, s
binary= "00110001"

For s = 1 To Len(binary)
    n = n + (Mid(binary, Len(binary) - s + 1, 1) * (2 ^ (s - 1)))
Next 's

WScript.Echo binary & " = " & n

outputs

00110001 = 49

Converted from here: http://www.vb-helper.com/howto_decimal_to_binary.html