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JSP to .Net

Discussion in 'C#' started by AstarothSolutions, Apr 7, 2011.

  1. #1
    I have a relatively simple piece of JSP code that I need to convert to .Net (don't mind if it is VB or C#).

    Anyone have any ideas?

    
    <%@ page import="java.util.*, 
    	java.text.*, 
    	java.io.*, 
    	javax.servlet.*, 
    	javax.crypto.Cipher,
    	javax.crypto.SecretKey,
    	javax.crypto.spec.SecretKeySpec, 
    	java.net.URLEncoder, 
    	java.security.spec.AlgorithmParameterSpec,
    	java.security.GeneralSecurityException,
    	java.security.NoSuchAlgorithmException,
    	org.apache.commons.codec.binary.Base64,
    	org.apache.commons.codec.binary.Hex,
    	org.apache.commons.codec.BinaryEncoder"%>
    
    <%
    // remove the domain name from the user string
    String s = request.getParameter("id");
    String username = s.substring(s.indexOf("\\")+1, s.length()); 
    
    // decode the base64 encoded secret key
    //String b64EncodedSecretKey = "y2K0SPm1WO0iOm/DMNnJcpF1XRL5LknC6i9y5R0J8HM=";
    String b64EncodedSecretKey = "+od47ejGF/G94ultfN8QYg==";
    byte[] secretKeyBytes = b64EncodedSecretKey.getBytes("UTF-8");
    byte[] keyData = Base64.decodeBase64(secretKeyBytes);
    
    // create a secret key instance
    String encryptionAlgorithm = "AES";
    SecretKey secretKey = new SecretKeySpec(keyData, encryptionAlgorithm);
    
    // create cipher. note that because no mode/padding is specified in the
    // encryption transformation below, the default mode and padding of "ECB"
    // and "PKCS5Padding", respectively, will be used.
    String encryptionTransformation = "AES";
    Cipher cipher = Cipher.getInstance(encryptionTransformation);
    cipher.init(Cipher.ENCRYPT_MODE, secretKey, (AlgorithmParameterSpec)null);
    
    // get ticket expiration date
    Calendar cal = Calendar.getInstance();
    cal.setTime(new Date());
    cal.add(Calendar.MINUTE, 5); // expire 5 minutes from now
    Date expireDate = cal.getTime();
    
    // format date
    DateFormat df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
    df.setTimeZone(TimeZone.getTimeZone("UTC"));
    String iso8601Date = df.format(expireDate);
    
    // create ticket payload.
    StringBuffer buff = new StringBuffer();
    buff.append(username); // login key
    buff.append('|');
    buff.append(iso8601Date); // ISO-8601 formatted UTC date
    String ticketPayload = buff.toString();
    
    // encrypt ticket
    byte[] encryptedTicket = cipher.doFinal(ticketPayload.getBytes());
    
    // base64 encode the encrypted ticket
    byte[] rawBase64Bytes = Base64.encodeBase64(encryptedTicket , false);
    String b64EncodedTicket = new String(rawBase64Bytes, "UTF-8");
    
    // url encode the base64 encoded ticket. the resulting url encoded ticket
    // should be used as the value for the 'Ticket' query parameter
    String urlEncodedTicket = URLEncoder.encode(b64EncodedTicket, "UTF-8"); 
    
    response.sendRedirect("https://TargetDomain.com/security/security_check?orgKey=H15S2AC40X&Ticket=" + urlEncodedTicket );
    %>
    
    
    Code (markup):

    SEMrush
     
    AstarothSolutions, Apr 7, 2011 IP
    SEMrush