Classic ASP

IKOF Generation Code for Montenegro Fiscalization Service

Demonstrates computing the IKOF MD5 summary value as described in section 4.3 of this document: https://poreskauprava.gov.me/ResourceManager/FileDownload.aspx?rId=416042&rType=2

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Classic ASP

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
success = 0

' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

concatenatedParams = "12345678|2019-06-12T17:05:43+02:00|9952|bb123bb1231|cc123cc1231|ss123ss123|199.01"

' Get the private key from a pfx file.
set pfx = Server.CreateObject("Chilkat.Pfx")
success = pfx.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123")
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( pfx.LastErrorText) & "</pre>"
    Response.End
End If

set privKey = Server.CreateObject("Chilkat.PrivateKey")
success = pfx.PrivateKeyAt(0,privKey)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( pfx.LastErrorText) & "</pre>"
    Response.End
End If

' Create IIC signature according to RSASSA-PKCS-v1_5 using SHA256
set rsa = Server.CreateObject("Chilkat.Rsa")
success = rsa.UsePrivateKey(privKey)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( rsa.LastErrorText) & "</pre>"
    Response.End
End If

' PKCS-v1_5 is used by default.
rsa.EncodingMode = "hex"
rsa.Charset = "utf-8"
hexSig = rsa.SignStringENC(concatenatedParams,"sha256")

Response.Write "<pre>" & Server.HTMLEncode( "Signature value result is: " & hexSig) & "</pre>"

' Compute the MD5 hash of the bytes.
set crypt = Server.CreateObject("Chilkat.Crypt2")
crypt.EncodingMode = "hex"
crypt.HashAlgorithm = "md5"
set bd = Server.CreateObject("Chilkat.BinData")
success = bd.AppendEncoded(hexSig,"hex")
md5_summary = crypt.HashBdENC(bd)

Response.Write "<pre>" & Server.HTMLEncode( "MD5 summary value is: " & md5_summary) & "</pre>"

%>
</body>
</html>