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POFunction returns different MD5 hash each time
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  1. POFunction returns different MD5 hash each time
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    copied!<p>I have written a function that takes the URL of a file as a parameter and returns the MD5 hash of that file.</p> <p>The hash generated by this function (in the development environment) matches the hash generated by a third-party tool for the same file.</p> <p>But when this was deployed in my client's QA environment, this function returns different values each time the function is called.</p> <p>I did some Google-ing and found that the issue might be because the dev. server is 64bit and the QA server was 32bit. Since I do not have access to my client's servers, I deployed it in another 32bit server and found that the hashes match even in a 32bit server(function works as expected?).</p> <p>I also had a look at <a href="https://stackoverflow.com/questions/1347866/md5-file-hash-for-the-same-unchanged-file-is-different-each-time-c-sharp">this question</a>.</p> <p>here is the function I wrote:</p> <pre><code>public static String GetMD5HashFromFile(String url) { String response = String.Empty; HttpWebRequest aRequest = (HttpWebRequest)WebRequest.Create(url); using (HttpWebResponse aResponse = (HttpWebResponse)aRequest.GetResponse()) { MD5 md5 = new MD5CryptoServiceProvider(); byte[] retVal = md5.ComputeHash(aResponse.GetResponseStream()); response = "MD5:" + BitConverter.ToString(retVal).Replace("-", string.Empty); } return response; } </code></pre> <p>My questions are; what could be the reason for this function to return various values? Is the issue in my function?</p>
 

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