FIPS Compliance

Posted on 2013-01-11
Last Modified: 2013-01-14
We need to encrypt sensitive data in our database for our internal Web Application written in VS 2010 C# and using a MS SQL Server 2005 database.

I created a DLL to handle the encryption function.  Here is the code:

        public string Encrypt(string toEncrypt, bool useHashing, string key)
            // If string is null or whitespace, return toEncrypt
            if (String.IsNullOrEmpty(toEncrypt) || String.IsNullOrWhiteSpace(toEncrypt) || toEncrypt.Equals(DBNull.Value))
                return toEncrypt;

            // Strip blanks from end of string
            toEncrypt = toEncrypt.Trim();
            byte[] keyArray;
            byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes(toEncrypt);

            System.Configuration.AppSettingsReader settingsReader = new AppSettingsReader();
            if (String.IsNullOrEmpty(key))
                // Get the key from config file
                key = (string)settingsReader.GetValue("SecurityKey", typeof(String));
            if (useHashing)
                MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();
                keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(key));
                keyArray = UTF8Encoding.UTF8.GetBytes(key);

            TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();
            tdes.Key = keyArray;
            tdes.Mode = CipherMode.ECB;
            tdes.Padding = PaddingMode.PKCS7;

            ICryptoTransform cTransform = tdes.CreateEncryptor();
            byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
            return Convert.ToBase64String(resultArray, 0, resultArray.Length);

Open in new window

I integrated the DLL into my web application and it works fine on our testing server.  However when I deployed to our Production server I get the following error:

This implementation is not part of the Windows Platform FIPS validated cryptographic algorithms.  I researched the error and tried the following to resolve it but have not been successful.

1. Verified "Local Security Setting System Cryptography. Use FIPs compliant algorithms for encryption, hashing, and signing" policy is disabled on our Production server.

2. Verified the registry key for fipsalgorithmpolicy is set to 0.

3. Added <machinekey validationKey="AutoGenerate,IsolateApps" decryptionKey="AutoGenerate,IsolateApps" validation="3DES" decryption="3DES" /> to web.config file under <system.web>.  Restarted IIS.

4. Added <enforceFIPSPolicy enable="false" /> in web.config under <configuration><runtime>.

We are trying to see if the FIPs setting is at the GPO or Domain Controller level and overriding my settings but haven't heard back from our server department yet.

Is there something else I can do or how can I make my algorithm FIPS compliant?
Question by:dyarosh
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
LVL 64

Accepted Solution

btan earned 500 total points
ID: 38769487
i dont suggest that you disable FIPS esp this is production server. It will be worst off since MD5 is  weaker algorithm compared to SHA1 for hashing  - use SHA1CryptoServiceProvider Class instead

Since you already used TripleDESCryptoServiceProvider that is fine and better will be for  AesCryptoServiceProvider (.net3.5 above) Class. But try the SHA1 first :)

This is one good link

Author Closing Comment

ID: 38774329
This solved the problem of being able to use Hashing but I have another question that I will be posting.  Thanks for your help.

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Provide an easy one stop to quickly get the relevant information on common asked question on Ransomware in Expert Exchange.
SSL stands for “Secure Sockets Layer” and an SSL certificate is a critical component to keeping your website safe, secured, and compliant. Any ecommerce website must have an SSL certificate to ensure the safe handling of sensitive information like…
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…

726 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question