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by Jiří {x2} Činčura

SHA1 in a trice

8 Jun 2009 1 mins .NET, Cryptography, LINQ

Having girls/womans in a dev team is always fun. Yes, you have to wash your body more than every Visual Studio release. 😃 But girls have also different way of looking at the problem. I had this experience in a training last week. There’s one girl in dev team. While showing how to work with Cryptography namespace I was creating simple method for SHA1 hash. Saying, that’s pretty easy to create SHA1 hash in a couple of lines I got a question (yes, from the girl 😉), whether it’s possible to do it in one row, to make code more compact and show that’s double pretty easy. And it really is:

label1.Text = string.Join(string.Empty, new SHA1Managed().ComputeHash(Encoding.Unicode.GetBytes(textBox1.Text)).Select(_ => _.ToString()).ToArray());

It’s not the most readable code, but as a helper function somewhere … 😃

Profile Picture Jiří Činčura is .NET, C# and Firebird expert. He's focused on data and business layers, language constructs, parallelism, databases and performance. He's Microsoft Most Valuable Professional and frequent speaker. You can read his articles, guides and tips and tricks at